2025
Lewandoski, S.A., Robinson, K.F., Brendan, T.O., Booth R., Hrodey, P., Hume, J.B., Pratt, T.C., Scott, A.M., Symbal, M., Wagner, C.M., Johnson, N.S.
Decision analysis of integrated pest management: a case study on invasive sea lamprey in the Great Lakes Basin Journal Article
In: Journal of Environmental Management, vol. 373, no. 12366, 2025.
Abstract | Links | BibTeX | Tags: control, model, sea lamprey
@article{nokey,
title = {Decision analysis of integrated pest management: a case study on invasive sea lamprey in the Great Lakes Basin},
author = {Lewandoski, S.A., Robinson, K.F., Brendan, T.O., Booth R., Hrodey, P., Hume, J.B., Pratt, T.C., Scott, A.M., Symbal, M., Wagner, C.M., Johnson, N.S. },
url = {https://doi.org/10.1016/j.jenvman.2024.123666},
year = {2025},
date = {2025-01-01},
urldate = {2025-01-01},
journal = {Journal of Environmental Management},
volume = {373},
number = {12366},
abstract = {Integrated Pest Management (IPM) provides a powerful framework for addressing threats to human well-being
caused by nuisance species including invasives. We examined the hypothesis that adaptive management could
erode barriers to IPM implementation by developing a decision-analytic adaptive management framework for
invasive sea lamprey (Petromyzon marinus) IPM in the Laurentian Great Lakes of North America. The framework
addressed objectives associated with coordinating multiple sea lamprey control actions at the regional scale and
objectives associated with internal validity of control actions. We reduced the scope of possible management
actions by orders of magnitude to the set of 6432 alternatives expected to be both socially acceptable and
technically feasible. Using utility theory, we identified the management actions that optimized expected utility
for all possible objective weighting schemes that considered tradeoffs between maximizing learning about
control tactic efficacy and minimizing cost to the IPM program. Sensitivity analyses revealed that assumptions
about the social acceptability of deploying electric weirs to control invasive sea lamprey influenced selection of
the optimal control action, suggesting that resolving this source of uncertainty through iterative application of
the framework may lead to improved sea lamprey control outcomes. Overall, we found that adaptive management
enabled learning processes useful for overcoming barriers to IPM of invasive sea lamprey. It formalized
learning about sea lamprey control tactic efficacy as an objective of the IPM institution, questioned previously
held assumptions about what constitutes a viable control strategy, and enabled a management experiment with
temporal and spatial replication.},
keywords = {control, model, sea lamprey},
pubstate = {published},
tppubtype = {article}
}
Integrated Pest Management (IPM) provides a powerful framework for addressing threats to human well-being
caused by nuisance species including invasives. We examined the hypothesis that adaptive management could
erode barriers to IPM implementation by developing a decision-analytic adaptive management framework for
invasive sea lamprey (Petromyzon marinus) IPM in the Laurentian Great Lakes of North America. The framework
addressed objectives associated with coordinating multiple sea lamprey control actions at the regional scale and
objectives associated with internal validity of control actions. We reduced the scope of possible management
actions by orders of magnitude to the set of 6432 alternatives expected to be both socially acceptable and
technically feasible. Using utility theory, we identified the management actions that optimized expected utility
for all possible objective weighting schemes that considered tradeoffs between maximizing learning about
control tactic efficacy and minimizing cost to the IPM program. Sensitivity analyses revealed that assumptions
about the social acceptability of deploying electric weirs to control invasive sea lamprey influenced selection of
the optimal control action, suggesting that resolving this source of uncertainty through iterative application of
the framework may lead to improved sea lamprey control outcomes. Overall, we found that adaptive management
enabled learning processes useful for overcoming barriers to IPM of invasive sea lamprey. It formalized
learning about sea lamprey control tactic efficacy as an objective of the IPM institution, questioned previously
held assumptions about what constitutes a viable control strategy, and enabled a management experiment with
temporal and spatial replication.
caused by nuisance species including invasives. We examined the hypothesis that adaptive management could
erode barriers to IPM implementation by developing a decision-analytic adaptive management framework for
invasive sea lamprey (Petromyzon marinus) IPM in the Laurentian Great Lakes of North America. The framework
addressed objectives associated with coordinating multiple sea lamprey control actions at the regional scale and
objectives associated with internal validity of control actions. We reduced the scope of possible management
actions by orders of magnitude to the set of 6432 alternatives expected to be both socially acceptable and
technically feasible. Using utility theory, we identified the management actions that optimized expected utility
for all possible objective weighting schemes that considered tradeoffs between maximizing learning about
control tactic efficacy and minimizing cost to the IPM program. Sensitivity analyses revealed that assumptions
about the social acceptability of deploying electric weirs to control invasive sea lamprey influenced selection of
the optimal control action, suggesting that resolving this source of uncertainty through iterative application of
the framework may lead to improved sea lamprey control outcomes. Overall, we found that adaptive management
enabled learning processes useful for overcoming barriers to IPM of invasive sea lamprey. It formalized
learning about sea lamprey control tactic efficacy as an objective of the IPM institution, questioned previously
held assumptions about what constitutes a viable control strategy, and enabled a management experiment with
temporal and spatial replication.
2024
Luhring, T., Hume, J.B., Wagner, C.M.
Predation risk creates unexpected migration decisions in a non-homing semelparous fish Journal Article
In: Animal Behaviour, 2024.
Abstract | Links | BibTeX | Tags: alarm cue, control, migration, sea lamprey, semiochemical, trap
@article{nokey,
title = {Predation risk creates unexpected migration decisions in a non-homing semelparous fish},
author = {Luhring, T., Hume, J.B., Wagner, C.M.},
url = {https://doi.org/10.1016/j.anbehav.2024.10.027},
year = {2024},
date = {2024-12-01},
urldate = {2024-12-01},
journal = {Animal Behaviour},
abstract = {Predation risk and migration are major forces shaping animal behaviour and fitness. Migratory animals are often under incredible energy and time constraints, yet predation risk is present during many natural migrations. Manipulating risk landscapes of migrating animals in natural settings offers an especially powerful way to assess how the perception of multiple chemical cues across large scales affects migratory behaviour and decision-making processes. In this study, we presented 432 upstream migrating sea lamprey, Petromyzon marinus (a nonhoming semelparous fish) with a choice between two streams that differed in the presence or absence of an alarm cue, while chemical cues associated with suitable breeding conditions were present in each stream (larvae from previous generations). Three-quarters of them were detected at the confluence 3.3 km upstream on their night of release and during alarm cue exposure hours. Sea lamprey preferred the warmer of the two stream branches upstream of the confluence on nights when alarm cue was absent. Unexpectedly, the presence of alarm cue in either stream branch led to a preference for the branch upstream of the deeper portion of the main channel, independent of temperature differences between the streams. These results demonstrate that migratory decisions by sea lamprey at key points in their migration can be altered by the presence of predation risk. However, physical stream properties such as depth can potentially alter the perceived risk of predation and antipredator responses.},
keywords = {alarm cue, control, migration, sea lamprey, semiochemical, trap},
pubstate = {published},
tppubtype = {article}
}
Predation risk and migration are major forces shaping animal behaviour and fitness. Migratory animals are often under incredible energy and time constraints, yet predation risk is present during many natural migrations. Manipulating risk landscapes of migrating animals in natural settings offers an especially powerful way to assess how the perception of multiple chemical cues across large scales affects migratory behaviour and decision-making processes. In this study, we presented 432 upstream migrating sea lamprey, Petromyzon marinus (a nonhoming semelparous fish) with a choice between two streams that differed in the presence or absence of an alarm cue, while chemical cues associated with suitable breeding conditions were present in each stream (larvae from previous generations). Three-quarters of them were detected at the confluence 3.3 km upstream on their night of release and during alarm cue exposure hours. Sea lamprey preferred the warmer of the two stream branches upstream of the confluence on nights when alarm cue was absent. Unexpectedly, the presence of alarm cue in either stream branch led to a preference for the branch upstream of the deeper portion of the main channel, independent of temperature differences between the streams. These results demonstrate that migratory decisions by sea lamprey at key points in their migration can be altered by the presence of predation risk. However, physical stream properties such as depth can potentially alter the perceived risk of predation and antipredator responses.
Hume, J.B., Bennis, S., Bruning, T., Docker, M.F., Good, S., Lampman, R., Rinchard, J., Searcy, T., Wilkie, M.P., Johnson, N.S.
Evaluation of larval sea lamprey Petromyzon marinus growth in the laboratory: influence of temperature and diet Journal Article
In: Aquaculture Research, vol. 2024, no. 5547340, 2024.
Abstract | Links | BibTeX | Tags: aquaculture, growth, management, sea lamprey
@article{nokey,
title = {Evaluation of larval sea lamprey Petromyzon marinus growth in the laboratory: influence of temperature and diet},
author = {Hume, J.B., Bennis, S., Bruning, T., Docker, M.F., Good, S., Lampman, R., Rinchard, J., Searcy, T., Wilkie, M.P., Johnson, N.S.},
url = {https://doi.org/10.1155/2024/5547340},
year = {2024},
date = {2024-02-02},
urldate = {2024-02-02},
journal = {Aquaculture Research},
volume = {2024},
number = {5547340},
abstract = {Conservation aquaculture provides a means for promoting environmental stewardship, useful both in the context of restoring
native species and limiting the production of invasive species. Aquaculture of lampreys is a relatively recent endeavor aimed
primarily at producing animals to support the restoration of declining native populations. However, in the Laurentian Great Lakes,
where sea lamprey Petromyzon marinus are invasive, the ability to acquire a reliable source of certain life stages would be a
significant benefit to those controlling their populations and studying the species. Here, we apply methodologies developed for
Pacific lamprey Entosphenus tridentatus restoration to investigate the feasibility of rearing larval sea lamprey under laboratory
conditions. In two experiments lasting 3 and 9 months, we tested the effects of different dietary sources and water temperature
(ambient and controlled) on the survival and growth of wild-caught larvae. Rearing conditions had no effect on mortality, as larval
survival was 100% in both experiments. Growth was significantly affected by water temperature, with the highest average daily
growth rates observed at 22 and 15°C (0.14 mm day−1
) and lowest at 8°C (0.06 mm day−1
). Diets of yeast alone (0.19 and 0.21 g L−1
)
performed better than those comprising a mixture of yeast and other material when fed 3 times weekly (rice flour, wheat flour, fish
meal; 0.19 and 0.32 g L−1
). Averaged across the three constant temperatures (8, 15, and 22°C), larvae fed on yeast grew 0.13 mm day−1
and 0.01 g day−1
, whereas on yeast + fish meal, they grew 0.09 mm day−1 and 0.01 g day−1
. At ambient temperature (4–20°C), larvae
fed on yeast grew 0.15 mm day−1 and 0.01 g day−1
, whereas those fed on yeast + wheat flour grew 0.13 mm day−1 and 0.008 g day−1
and those fed on yeast + rice flour grew 0.12 mm day−1 and 0.009 g day−1
. An experimental duration of 90 days was sufficient to
detect significant changes to larval sea lamprey growth stemming from temperature variation. Overall, rearing of sea lamprey in
captivity appears feasible at low density (31–32 g m−2 and 17–25 larvae m−2
), but uncertainties remain regarding the most appro-
priate means of providing adequate feed for these fish in high-density conditions.},
keywords = {aquaculture, growth, management, sea lamprey},
pubstate = {published},
tppubtype = {article}
}
Conservation aquaculture provides a means for promoting environmental stewardship, useful both in the context of restoring
native species and limiting the production of invasive species. Aquaculture of lampreys is a relatively recent endeavor aimed
primarily at producing animals to support the restoration of declining native populations. However, in the Laurentian Great Lakes,
where sea lamprey Petromyzon marinus are invasive, the ability to acquire a reliable source of certain life stages would be a
significant benefit to those controlling their populations and studying the species. Here, we apply methodologies developed for
Pacific lamprey Entosphenus tridentatus restoration to investigate the feasibility of rearing larval sea lamprey under laboratory
conditions. In two experiments lasting 3 and 9 months, we tested the effects of different dietary sources and water temperature
(ambient and controlled) on the survival and growth of wild-caught larvae. Rearing conditions had no effect on mortality, as larval
survival was 100% in both experiments. Growth was significantly affected by water temperature, with the highest average daily
growth rates observed at 22 and 15°C (0.14 mm day−1
) and lowest at 8°C (0.06 mm day−1
). Diets of yeast alone (0.19 and 0.21 g L−1
)
performed better than those comprising a mixture of yeast and other material when fed 3 times weekly (rice flour, wheat flour, fish
meal; 0.19 and 0.32 g L−1
). Averaged across the three constant temperatures (8, 15, and 22°C), larvae fed on yeast grew 0.13 mm day−1
and 0.01 g day−1
, whereas on yeast + fish meal, they grew 0.09 mm day−1 and 0.01 g day−1
. At ambient temperature (4–20°C), larvae
fed on yeast grew 0.15 mm day−1 and 0.01 g day−1
, whereas those fed on yeast + wheat flour grew 0.13 mm day−1 and 0.008 g day−1
and those fed on yeast + rice flour grew 0.12 mm day−1 and 0.009 g day−1
. An experimental duration of 90 days was sufficient to
detect significant changes to larval sea lamprey growth stemming from temperature variation. Overall, rearing of sea lamprey in
captivity appears feasible at low density (31–32 g m−2 and 17–25 larvae m−2
), but uncertainties remain regarding the most appro-
priate means of providing adequate feed for these fish in high-density conditions.
native species and limiting the production of invasive species. Aquaculture of lampreys is a relatively recent endeavor aimed
primarily at producing animals to support the restoration of declining native populations. However, in the Laurentian Great Lakes,
where sea lamprey Petromyzon marinus are invasive, the ability to acquire a reliable source of certain life stages would be a
significant benefit to those controlling their populations and studying the species. Here, we apply methodologies developed for
Pacific lamprey Entosphenus tridentatus restoration to investigate the feasibility of rearing larval sea lamprey under laboratory
conditions. In two experiments lasting 3 and 9 months, we tested the effects of different dietary sources and water temperature
(ambient and controlled) on the survival and growth of wild-caught larvae. Rearing conditions had no effect on mortality, as larval
survival was 100% in both experiments. Growth was significantly affected by water temperature, with the highest average daily
growth rates observed at 22 and 15°C (0.14 mm day−1
) and lowest at 8°C (0.06 mm day−1
). Diets of yeast alone (0.19 and 0.21 g L−1
)
performed better than those comprising a mixture of yeast and other material when fed 3 times weekly (rice flour, wheat flour, fish
meal; 0.19 and 0.32 g L−1
). Averaged across the three constant temperatures (8, 15, and 22°C), larvae fed on yeast grew 0.13 mm day−1
and 0.01 g day−1
, whereas on yeast + fish meal, they grew 0.09 mm day−1 and 0.01 g day−1
. At ambient temperature (4–20°C), larvae
fed on yeast grew 0.15 mm day−1 and 0.01 g day−1
, whereas those fed on yeast + wheat flour grew 0.13 mm day−1 and 0.008 g day−1
and those fed on yeast + rice flour grew 0.12 mm day−1 and 0.009 g day−1
. An experimental duration of 90 days was sufficient to
detect significant changes to larval sea lamprey growth stemming from temperature variation. Overall, rearing of sea lamprey in
captivity appears feasible at low density (31–32 g m−2 and 17–25 larvae m−2
), but uncertainties remain regarding the most appro-
priate means of providing adequate feed for these fish in high-density conditions.
2021
Docker, M.F., Johnson, N.S., Bravener, G.A., Garroway, C., Hammers, B., Hrodey, P., Hume, J.B., Lewandoski, S., Young, B., Zollweg-Horan, E.C., & Ogden, J.
A review of sea lamprey dispersal and population structure in the Great Lakes and the implications for control Journal Article
In: Journal of Great Lakes Research, vol. 47, S1, pp. S549-S569, 2021.
Abstract | Links | BibTeX | Tags: control, genetics, management, migration, sea lamprey
@article{nokey,
title = {A review of sea lamprey dispersal and population structure in the Great Lakes and the implications for control},
author = {Docker, M.F., Johnson, N.S., Bravener, G.A., Garroway, C., Hammers, B., Hrodey, P., Hume, J.B., Lewandoski, S., Young, B., Zollweg-Horan, E.C., & Ogden, J. },
url = {https://doi.org/10.1016/j.jglr.2021.09.015},
year = {2021},
date = {2021-12-01},
urldate = {2025-12-01},
journal = {Journal of Great Lakes Research},
volume = {47, S1},
pages = {S549-S569},
abstract = {Understanding the population structure of invasive sea lamprey (Petromyzon marinus) in the Great Lakes basin is essential for an effective control program. We review knowledge of lake connectivity, dispersal during the parasitic stage, and results from phenotypic, demographic, and genetic studies to evaluate how sea lamprey populations are structured. There is no evidence for contemporary movement between Lake Ontario and the Atlantic population, although it appears possible. Dispersal between Lake Ontario and the Finger Lakes is more likely, as is contemporary movement between Lakes Ontario and Erie via the Welland Canal, although neither has been directly observed. Downstream movement from Lake Erie to Lake Ontario via the Niagara River has been reported. Bidirectional movement between Lakes Erie and Huron has been observed, and movement of sea lamprey among the upper Great Lakes (especially between Lakes Huron and Michigan) is relatively common, although complete mixing likely does not occur. The maximum straight-line dispersal distance reported for a tagged sea lamprey was 628 km between the St. Marys River and western Lake Erie. Genetic population studies using a variety of molecular markers generally found weak but significant broad-scale population structure (e.g., between freshwater and anadromous populations, and among Lake Ontario, Lake Erie, and the upper Great Lakes), but finer-scale structure was rarely detected. Nevertheless, some within-basin structure is suggested by regional differences in phenotypic and demographic traits (e.g., sex ratio, body size). Further study will be important because management is most efficiently targeted when the geography of demographically independent populations is well-characterized.},
keywords = {control, genetics, management, migration, sea lamprey},
pubstate = {published},
tppubtype = {article}
}
Understanding the population structure of invasive sea lamprey (Petromyzon marinus) in the Great Lakes basin is essential for an effective control program. We review knowledge of lake connectivity, dispersal during the parasitic stage, and results from phenotypic, demographic, and genetic studies to evaluate how sea lamprey populations are structured. There is no evidence for contemporary movement between Lake Ontario and the Atlantic population, although it appears possible. Dispersal between Lake Ontario and the Finger Lakes is more likely, as is contemporary movement between Lakes Ontario and Erie via the Welland Canal, although neither has been directly observed. Downstream movement from Lake Erie to Lake Ontario via the Niagara River has been reported. Bidirectional movement between Lakes Erie and Huron has been observed, and movement of sea lamprey among the upper Great Lakes (especially between Lakes Huron and Michigan) is relatively common, although complete mixing likely does not occur. The maximum straight-line dispersal distance reported for a tagged sea lamprey was 628 km between the St. Marys River and western Lake Erie. Genetic population studies using a variety of molecular markers generally found weak but significant broad-scale population structure (e.g., between freshwater and anadromous populations, and among Lake Ontario, Lake Erie, and the upper Great Lakes), but finer-scale structure was rarely detected. Nevertheless, some within-basin structure is suggested by regional differences in phenotypic and demographic traits (e.g., sex ratio, body size). Further study will be important because management is most efficiently targeted when the geography of demographically independent populations is well-characterized.
Hume, J.B., Almeida, P.R., Buckley, C., Criger, L.A., Madenjian, C.P., Robinson, K.F., Wang, C. & Muir, A.M.
In: Journal of Great Lakes Research, vol. 47, S1, pp. S704–S722, 2021.
Abstract | Links | BibTeX | Tags: climate, conservation, control, growth, management, migration, sea lamprey, trap
@article{nokey,
title = {Managing native and non-native sea lamprey (Petromyzon marinus) through anthropogenic change: a prospective assessment of key threats and uncertainties},
author = {Hume, J.B., Almeida, P.R., Buckley, C., Criger, L.A., Madenjian, C.P., Robinson, K.F., Wang, C. & Muir, A.M.},
url = {https://doi.org/10.1016/j.jglr.2020.08.015},
year = {2021},
date = {2021-12-01},
urldate = {2021-12-01},
journal = {Journal of Great Lakes Research},
volume = {47, S1},
pages = {S704–S722},
abstract = {Sea lamprey (Petromyzon marinus) is a species of conservation concern in their native range of the Atlantic coasts of Europe (Near Threatened to Critically Endangered) and North America (Secure to Critically Imperiled), and an invasive species of great economic and ecological concern in the Laurentian Great Lakes. Despite differences in life history strategy (anadromous natives vs adfluvial non-natives), the biology of sea lamprey is sufficiently similar to expect comparable responses to large-scale environmental change. We take a prospective look at the future (50 to 100 years) of sea lamprey management in an era of considerable environmental disturbance, and consider biological responses, management actions, and the future status of populations across the native and non-native ranges. Based on facilitated discussion by a diverse group of international experts, two major but poorly characterized classes of threats to sea lamprey were identified: climate change and socio-political issues. We discuss how climate induced changes affect growth, bioenergetics, and phenology of sea lamprey, and associated effects on control tactics (pesticides and barriers) and conservation. We consider tensions surrounding improving connectivity in the Great Lakes while controlling invasive sea lamprey, and discuss supplements and alternatives to pesticides and their wider effect, as well as the effects of new invasive species. To prevent the extirpation of native sea lamprey populations, or the re-expansion of non-native populations, we conclude with a call for new and ongoing dialogue and collaboration among all sea lamprey biologists and managers across the native and non-native range.},
keywords = {climate, conservation, control, growth, management, migration, sea lamprey, trap},
pubstate = {published},
tppubtype = {article}
}
Sea lamprey (Petromyzon marinus) is a species of conservation concern in their native range of the Atlantic coasts of Europe (Near Threatened to Critically Endangered) and North America (Secure to Critically Imperiled), and an invasive species of great economic and ecological concern in the Laurentian Great Lakes. Despite differences in life history strategy (anadromous natives vs adfluvial non-natives), the biology of sea lamprey is sufficiently similar to expect comparable responses to large-scale environmental change. We take a prospective look at the future (50 to 100 years) of sea lamprey management in an era of considerable environmental disturbance, and consider biological responses, management actions, and the future status of populations across the native and non-native ranges. Based on facilitated discussion by a diverse group of international experts, two major but poorly characterized classes of threats to sea lamprey were identified: climate change and socio-political issues. We discuss how climate induced changes affect growth, bioenergetics, and phenology of sea lamprey, and associated effects on control tactics (pesticides and barriers) and conservation. We consider tensions surrounding improving connectivity in the Great Lakes while controlling invasive sea lamprey, and discuss supplements and alternatives to pesticides and their wider effect, as well as the effects of new invasive species. To prevent the extirpation of native sea lamprey populations, or the re-expansion of non-native populations, we conclude with a call for new and ongoing dialogue and collaboration among all sea lamprey biologists and managers across the native and non-native range.
Hume, J.B., Bracken, F.S.A., Mateus, C.S. & Brant, C.O.
Synergizing basic and applied research approaches to help understand lamprey biology and support management actions Journal Article
In: Journal of Great Lakes Research, vol. 47, S1, pp. S24–S37, 2021.
Abstract | Links | BibTeX | Tags: conservation, control, management
@article{nokey,
title = {Synergizing basic and applied research approaches to help understand lamprey biology and support management actions},
author = {Hume, J.B., Bracken, F.S.A., Mateus, C.S. & Brant, C.O.},
url = {https://doi.org/10.1016/j.jglr.2020.07.002},
year = {2021},
date = {2021-12-01},
urldate = {2021-12-01},
journal = {Journal of Great Lakes Research},
volume = {47, S1},
pages = {S24–S37},
abstract = {Lampreys (Petromyzontiformes) are a key component of freshwater ecosystems throughout temperate parts of the world. Of the 44 described species of lamprey, the sea lamprey (Petromyzon marinus) is certainly the most commonly recognized. This species has expanded its range from the Atlantic Ocean basin where it is of conservation concern in North America and Europe into the Laurentian Great Lakes where it is subject to a large-scale international control program. Many other species of lamprey are imperiled and require management intervention to ensure their persistence. These management efforts range from routine assessment and monitoring to active or proposed restoration plans where they have been extirpated. Regardless of whether the goal is to control or conserve a given lamprey population, an understanding of their basic biology is paramount when generating and executing management plans. Here, we take a broad look across core aspects of biology (survival, foraging, and reproduction) that encompass challenges and opportunities in regard to future science-based management of lampreys. We attempt to synergize basic and applied research to highlight where these findings are most applicable to solving management problems and reveal knowledge gaps. We conclude by suggesting future research avenues and questions aimed to stimulate progress in both basic and applied lamprey research.},
keywords = {conservation, control, management},
pubstate = {published},
tppubtype = {article}
}
Lampreys (Petromyzontiformes) are a key component of freshwater ecosystems throughout temperate parts of the world. Of the 44 described species of lamprey, the sea lamprey (Petromyzon marinus) is certainly the most commonly recognized. This species has expanded its range from the Atlantic Ocean basin where it is of conservation concern in North America and Europe into the Laurentian Great Lakes where it is subject to a large-scale international control program. Many other species of lamprey are imperiled and require management intervention to ensure their persistence. These management efforts range from routine assessment and monitoring to active or proposed restoration plans where they have been extirpated. Regardless of whether the goal is to control or conserve a given lamprey population, an understanding of their basic biology is paramount when generating and executing management plans. Here, we take a broad look across core aspects of biology (survival, foraging, and reproduction) that encompass challenges and opportunities in regard to future science-based management of lampreys. We attempt to synergize basic and applied research to highlight where these findings are most applicable to solving management problems and reveal knowledge gaps. We conclude by suggesting future research avenues and questions aimed to stimulate progress in both basic and applied lamprey research.
Hume, J.B., Bravener, G.A. & Johnson, N.S.
What can commercial fishery data in the Great Lakes reveal about juvenile sea lamprey (Petromyzon marinus) ecology and management? Journal Article
In: Journal of Great Lakes Research, vol. 47, S1, pp. S590–S603, 2021.
Abstract | Links | BibTeX | Tags: growth, sea lamprey, trophic ecology
@article{nokey,
title = {What can commercial fishery data in the Great Lakes reveal about juvenile sea lamprey (Petromyzon marinus) ecology and management?},
author = {Hume, J.B., Bravener, G.A. & Johnson, N.S.},
url = {https://doi.org/10.1016/j.jglr.2021.03.023},
year = {2021},
date = {2021-12-01},
urldate = {2021-12-01},
journal = {Journal of Great Lakes Research},
volume = {47, S1},
pages = {S590–S603},
abstract = {The Laurentian Great Lakes of North America support a large and profitable freshwater fishery, but one continuously beset by parasitism from the invasive sea lamprey (Petromyzon marinus). Despite being the life stage that inflicts damage to the fishery, therefore necessitating a bi-national control program, our knowledge of juvenile sea lamprey ecology is poor and their response to control efforts are not assessed. Incidental capture of juvenile sea lamprey by commercial fishers is one means to collect data on this enigmatic life stage, and in Lake Huron such data have been collated since 1967. Here, we explore incidental captures of juvenile sea lamprey and their hosts from northern Lake Huron between 1987 and 2017 (n = 33,246 observations) to address four objectives. Firstly, we document collection efforts by fishers to provide historical context to the dataset. Secondly, we pose and test a series of questions related to fishery encounter, host selection, growth, distribution, and sex ratio to highlight how these types of data can be informative regarding juvenile sea lamprey ecology. Results presented here could be used to develop biological hypotheses to be addressed in future work. Thirdly, we directly assessed whether juvenile sea lamprey capture data could be useful in corroborating trends observed in adult sea lamprey abundance and wounding, as well as in identifying abundance and wounding hotspots. Lastly, we summarize research and outreach efforts that have benefited from the capture of juvenile sea lamprey in recent years.},
keywords = {growth, sea lamprey, trophic ecology},
pubstate = {published},
tppubtype = {article}
}
The Laurentian Great Lakes of North America support a large and profitable freshwater fishery, but one continuously beset by parasitism from the invasive sea lamprey (Petromyzon marinus). Despite being the life stage that inflicts damage to the fishery, therefore necessitating a bi-national control program, our knowledge of juvenile sea lamprey ecology is poor and their response to control efforts are not assessed. Incidental capture of juvenile sea lamprey by commercial fishers is one means to collect data on this enigmatic life stage, and in Lake Huron such data have been collated since 1967. Here, we explore incidental captures of juvenile sea lamprey and their hosts from northern Lake Huron between 1987 and 2017 (n = 33,246 observations) to address four objectives. Firstly, we document collection efforts by fishers to provide historical context to the dataset. Secondly, we pose and test a series of questions related to fishery encounter, host selection, growth, distribution, and sex ratio to highlight how these types of data can be informative regarding juvenile sea lamprey ecology. Results presented here could be used to develop biological hypotheses to be addressed in future work. Thirdly, we directly assessed whether juvenile sea lamprey capture data could be useful in corroborating trends observed in adult sea lamprey abundance and wounding, as well as in identifying abundance and wounding hotspots. Lastly, we summarize research and outreach efforts that have benefited from the capture of juvenile sea lamprey in recent years.
Lucas, M.C., Hume, J.B., Almeida, P.R., Aronsuu, K., Habit, E., Silva, S., Wang, C. & Zampatti, B.
Emerging conservation initiatives for lampreys: research challenges and opportunities Journal Article
In: Journal of Great Lakes Research, vol. 47, S1, pp. S690–S703, 2021.
Abstract | Links | BibTeX | Tags: climate, conservation, control, management
@article{nokey,
title = {Emerging conservation initiatives for lampreys: research challenges and opportunities},
author = {Lucas, M.C., Hume, J.B., Almeida, P.R., Aronsuu, K., Habit, E., Silva, S., Wang, C. & Zampatti, B.},
url = {https://doi.org/10.1016/j.jglr.2020.06.004},
year = {2021},
date = {2021-12-01},
urldate = {2021-12-01},
journal = {Journal of Great Lakes Research},
volume = {47, S1},
pages = {S690–S703},
abstract = {Lampreys worldwide face multiple anthropogenic stressors. Several species are ‘at-risk’ listed, yet abundance data for most remain insufficient to adequately assess conservation status. Lamprey population declines are largely due to habitat degradation and fragmentation, pollution, and exploitation. Conservation priorities include: quantification of population trends and distribution; identification of Evolutionarily Significant Units; improved water quality and habitat; barrier removal or effective mitigation; ecologically-sensitive river flow management and hydropower planning; and mitigation of climate change impacts. There is urgent need for ecological and population demographics data for multiple species, particularly those in the Southern Hemisphere, Caspian Sea region, and Mexico. Irrigation and damming are already extensive, or rapidly expanding (e.g. Chile), while water-stressed regions (Mexico, California, Chile, Australia, Iberia) may be further impacted by climate change-induced flow alteration and increased temperatures. Barrier removal should benefit lampreys by increasing available habitat. However, fishways vary in effectiveness and are often inadequate, but present research opportunities encompassing ecohydraulics, biotelemetry and engineering. Environmental DNA permits rapid assessment of lamprey distribution within catchments, especially if improvements to distinguishing genetically similar groups are possible. Marine environments may play a critical role in population dynamics yet remain a “black box” in anadromous lamprey biology. Studying juvenile lamprey ecology is a substantial challenge but should be a priority. Some examples are monitoring of parasitic feeding-phase lamprey through trawl surveys and fisheries bycatch, telemetry of movements, or examining chemical tracers of marine habitat use. Knowledge transfer between the sea lamprey control programme and native-lamprey biologists worldwide remains crucial to developing effective lamprey management.},
keywords = {climate, conservation, control, management},
pubstate = {published},
tppubtype = {article}
}
Lampreys worldwide face multiple anthropogenic stressors. Several species are ‘at-risk’ listed, yet abundance data for most remain insufficient to adequately assess conservation status. Lamprey population declines are largely due to habitat degradation and fragmentation, pollution, and exploitation. Conservation priorities include: quantification of population trends and distribution; identification of Evolutionarily Significant Units; improved water quality and habitat; barrier removal or effective mitigation; ecologically-sensitive river flow management and hydropower planning; and mitigation of climate change impacts. There is urgent need for ecological and population demographics data for multiple species, particularly those in the Southern Hemisphere, Caspian Sea region, and Mexico. Irrigation and damming are already extensive, or rapidly expanding (e.g. Chile), while water-stressed regions (Mexico, California, Chile, Australia, Iberia) may be further impacted by climate change-induced flow alteration and increased temperatures. Barrier removal should benefit lampreys by increasing available habitat. However, fishways vary in effectiveness and are often inadequate, but present research opportunities encompassing ecohydraulics, biotelemetry and engineering. Environmental DNA permits rapid assessment of lamprey distribution within catchments, especially if improvements to distinguishing genetically similar groups are possible. Marine environments may play a critical role in population dynamics yet remain a “black box” in anadromous lamprey biology. Studying juvenile lamprey ecology is a substantial challenge but should be a priority. Some examples are monitoring of parasitic feeding-phase lamprey through trawl surveys and fisheries bycatch, telemetry of movements, or examining chemical tracers of marine habitat use. Knowledge transfer between the sea lamprey control programme and native-lamprey biologists worldwide remains crucial to developing effective lamprey management.
Mateus, C.S., Docker, M.F., Evanno, G., Hess, J.E., Hume, J.B., Oliveira, I., Souissi, A., Sutton, T.M.
Population structure in anadromous lampreys: patterns and processes Journal Article
In: Journal of Great Lakes Research, vol. 47, S1, pp. S38–S58, 2021.
Abstract | Links | BibTeX | Tags: genetics, migration
@article{nokey,
title = {Population structure in anadromous lampreys: patterns and processes},
author = {Mateus, C.S., Docker, M.F., Evanno, G., Hess, J.E., Hume, J.B., Oliveira, I., Souissi, A., Sutton, T.M. },
url = {https://doi.org/10.1016/j.jglr.2021.08.024},
year = {2021},
date = {2021-12-01},
urldate = {2021-12-01},
journal = {Journal of Great Lakes Research},
volume = {47, S1},
pages = {S38–S58},
abstract = {Population structure can reveal the diversity, gene flow, and dispersal of a species. This information can be used to make management decisions and reveal fundamental aspects of an organism’s biology. Distinct intrinsic (e.g., biological characteristics) and extrinsic (e.g., geographical and historical events, environment, human pressures) factors can influence population structure, with significant differences among species. However, detection of population structure in migratory lamprey species can be difficult to detect due to their lack of natal homing; this is particularly the case for anadromous lampreys, with their potential for wide dispersal at sea during their parasitic feeding stage. We review phenotypic and genetic markers, as well as the methods that have been used to assess population structure in lampreys, and discuss the relative strengths and limitations of each. Structure has been detected in several anadromous species using some of these methods, even without homing in these species, but we briefly contrast the weak population structure observed in anadromous species with the stronger structure observed in freshwater-resident lamprey species (particularly non-migratory brook lampreys). We relate lamprey population structure to species-specific ecological traits, such as juvenile dispersal tendencies, and provide case studies of six species. Delineation of appropriate management units in migratory lamprey species is important for conservation and management.},
keywords = {genetics, migration},
pubstate = {published},
tppubtype = {article}
}
Population structure can reveal the diversity, gene flow, and dispersal of a species. This information can be used to make management decisions and reveal fundamental aspects of an organism’s biology. Distinct intrinsic (e.g., biological characteristics) and extrinsic (e.g., geographical and historical events, environment, human pressures) factors can influence population structure, with significant differences among species. However, detection of population structure in migratory lamprey species can be difficult to detect due to their lack of natal homing; this is particularly the case for anadromous lampreys, with their potential for wide dispersal at sea during their parasitic feeding stage. We review phenotypic and genetic markers, as well as the methods that have been used to assess population structure in lampreys, and discuss the relative strengths and limitations of each. Structure has been detected in several anadromous species using some of these methods, even without homing in these species, but we briefly contrast the weak population structure observed in anadromous species with the stronger structure observed in freshwater-resident lamprey species (particularly non-migratory brook lampreys). We relate lamprey population structure to species-specific ecological traits, such as juvenile dispersal tendencies, and provide case studies of six species. Delineation of appropriate management units in migratory lamprey species is important for conservation and management.
Jones, P.E., Tummers, J.S., Galib, S.M., Woodford, D.J., Hume, J.B., Silva, L.G.M., Braga, R.R., de Leaniz, C.G., Vitule, J.R.S., Herder, J.E. & Lucas, M.C.
The use of barriers to limit the spread of aquatic invasive species: a global review Journal Article
In: Frontiers in Ecology and Evolution, vol. 9, no. 611631, 2021.
Abstract | Links | BibTeX | Tags: barrier, control, invasive
@article{nokey,
title = {The use of barriers to limit the spread of aquatic invasive species: a global review},
author = {Jones, P.E., Tummers, J.S., Galib, S.M., Woodford, D.J., Hume, J.B., Silva, L.G.M., Braga, R.R., de Leaniz, C.G., Vitule, J.R.S., Herder, J.E. & Lucas, M.C. },
url = {https://doi.org/10.3389/fevo.2021.611631},
year = {2021},
date = {2021-02-08},
urldate = {2021-02-08},
journal = {Frontiers in Ecology and Evolution},
volume = {9},
number = {611631},
abstract = {Aquatic invasive species (AIS) are one of the principal threats to freshwater biodiversity. Exclusion barriers are increasingly being used as a management strategy to control the spread of AIS. However, exclusion barriers can also impact native organisms and their effectiveness is likely to be context dependent. We conducted a quantitative literature review to evaluate the use of barriers to control animal AIS in freshwater ecosystems worldwide. The quantitative aspect of the review was supplemented by case studies that describe some of the challenges, successes, and opportunities for the use of the use of AIS exclusion barriers globally. Barriers have been used since the 1950s to control the spread of AIS, but effort has been increasing since 2005 (80% of studies) and an increasingly diverse range of AIS taxa are now targeted in a wide range of habitat types. The global use of AIS barriers has been concentrated in North America (74% of studies), Australasia (11%), and Europe (10%). Physical barriers (e.g., weirs, exclusion screens, and velocity barriers) have been most widely used (47%), followed by electric (27%) and chemical barriers (12%). Fish were the most targeted taxa (86%), followed by crustaceans (10%), molluscs (3%) and amphibians (1%). Most studies have been moderately successful in limiting the passage of AIS, with 86% of the barriers tested deterring >70% of individuals. However, only 25% of studies evaluated barrier impacts on native species, and development of selective passage is still in its infancy. Most studies have been too short (47% < 1 year, 87% < 5 years) to detect ecological impacts or have failed to use robust before-after-control-impact (BACI) study designs (only 5%). Hence, more effective monitoring is required to assess the long-term effectiveness of exclusion barriers as an AIS management tool. Our global case studies highlight the pressing need for AIS control in many ecoregions, and exclusion barriers have the potential to become an effective tool in some situations. However, the design and operation of exclusion barriers must be refined to deliver selective passage of native fauna, and exclusion barriers should only be used sparingly as part of a wider integrated management strategy.},
keywords = {barrier, control, invasive},
pubstate = {published},
tppubtype = {article}
}
Aquatic invasive species (AIS) are one of the principal threats to freshwater biodiversity. Exclusion barriers are increasingly being used as a management strategy to control the spread of AIS. However, exclusion barriers can also impact native organisms and their effectiveness is likely to be context dependent. We conducted a quantitative literature review to evaluate the use of barriers to control animal AIS in freshwater ecosystems worldwide. The quantitative aspect of the review was supplemented by case studies that describe some of the challenges, successes, and opportunities for the use of the use of AIS exclusion barriers globally. Barriers have been used since the 1950s to control the spread of AIS, but effort has been increasing since 2005 (80% of studies) and an increasingly diverse range of AIS taxa are now targeted in a wide range of habitat types. The global use of AIS barriers has been concentrated in North America (74% of studies), Australasia (11%), and Europe (10%). Physical barriers (e.g., weirs, exclusion screens, and velocity barriers) have been most widely used (47%), followed by electric (27%) and chemical barriers (12%). Fish were the most targeted taxa (86%), followed by crustaceans (10%), molluscs (3%) and amphibians (1%). Most studies have been moderately successful in limiting the passage of AIS, with 86% of the barriers tested deterring >70% of individuals. However, only 25% of studies evaluated barrier impacts on native species, and development of selective passage is still in its infancy. Most studies have been too short (47% < 1 year, 87% < 5 years) to detect ecological impacts or have failed to use robust before-after-control-impact (BACI) study designs (only 5%). Hence, more effective monitoring is required to assess the long-term effectiveness of exclusion barriers as an AIS management tool. Our global case studies highlight the pressing need for AIS control in many ecoregions, and exclusion barriers have the potential to become an effective tool in some situations. However, the design and operation of exclusion barriers must be refined to deliver selective passage of native fauna, and exclusion barriers should only be used sparingly as part of a wider integrated management strategy.
2020
Hume, J.B., Lucas, M.C., Reinhardt, U., Hrodey, P.J. & Wagner, C.M.
Sea lamprey (Petromyzon marinus) transit of a ramp equipped with studded substrate: implications for fish passage and invasive species control Journal Article
In: Ecological Engineering, vol. 155, no. 10597, 2020.
Abstract | Links | BibTeX | Tags: alarm cue, conservation, control, fishway, management, sea lamprey, trap
@article{nokey,
title = {Sea lamprey (Petromyzon marinus) transit of a ramp equipped with studded substrate: implications for fish passage and invasive species control},
author = {Hume, J.B., Lucas, M.C., Reinhardt, U., Hrodey, P.J. & Wagner, C.M.},
url = {https://doi.org/10.1016/j.ecoleng.2020.105957},
year = {2020},
date = {2020-08-01},
urldate = {2020-08-01},
journal = {Ecological Engineering},
volume = {155},
number = {10597},
abstract = {Anguilliform-swimming fishes (eels, lampreys) are undergoing large and global declines due partly to an inability to pass dams via traditional fishways. The installation of “eel ladders” (wetted, studded/bristle substrates that permit these fishes to climb over obstructions) offer a potential solution.
We examined the behaviour of migrating sub-adult sea lamprey (Petromyzon marinus) as they approached and attempted to ascend a 45° studded ramp in a mesocosm placed in a river. We also examined motivation to use the ramp in the presence of a conspecific alarm cue that signals predation risk.
Entrance (75%) and attraction efficiency (85%) were high, but reduced by the presence of alarm cue. In total, 98% of sea lamprey attracted to the base of the ramp ascended, and alarm cue had no effect. Time to ascend the ramp (post-release) was variable (1–521 min) and on average was 119 min (50% probability = 35 min). Few sea lamprey required multiple attempts to ascend (19.8%) and was more likely during longer transit times, with multiple ramp attachments, and with higher body mass. Propensity to attach to the ramp increased with number of attempts. The high efficacy of this design, compared to poor-mediocre efficiencies of similar designs in previous studies, may be related to water velocity and depth, geometry of substrate studs, substrate presentation (horizontal/vertical, and incline), and length of studded substrate.
Studded ramps represent a substantial opportunity for managers attempting to selectively pass anguilliform fishes over dams, aiding conservation efforts. Applications to the management of sea lamprey include removal in their non-native Great Lakes range, and fish passage in their native range.},
keywords = {alarm cue, conservation, control, fishway, management, sea lamprey, trap},
pubstate = {published},
tppubtype = {article}
}
Anguilliform-swimming fishes (eels, lampreys) are undergoing large and global declines due partly to an inability to pass dams via traditional fishways. The installation of “eel ladders” (wetted, studded/bristle substrates that permit these fishes to climb over obstructions) offer a potential solution.
We examined the behaviour of migrating sub-adult sea lamprey (Petromyzon marinus) as they approached and attempted to ascend a 45° studded ramp in a mesocosm placed in a river. We also examined motivation to use the ramp in the presence of a conspecific alarm cue that signals predation risk.
Entrance (75%) and attraction efficiency (85%) were high, but reduced by the presence of alarm cue. In total, 98% of sea lamprey attracted to the base of the ramp ascended, and alarm cue had no effect. Time to ascend the ramp (post-release) was variable (1–521 min) and on average was 119 min (50% probability = 35 min). Few sea lamprey required multiple attempts to ascend (19.8%) and was more likely during longer transit times, with multiple ramp attachments, and with higher body mass. Propensity to attach to the ramp increased with number of attempts. The high efficacy of this design, compared to poor-mediocre efficiencies of similar designs in previous studies, may be related to water velocity and depth, geometry of substrate studs, substrate presentation (horizontal/vertical, and incline), and length of studded substrate.
Studded ramps represent a substantial opportunity for managers attempting to selectively pass anguilliform fishes over dams, aiding conservation efforts. Applications to the management of sea lamprey include removal in their non-native Great Lakes range, and fish passage in their native range.
We examined the behaviour of migrating sub-adult sea lamprey (Petromyzon marinus) as they approached and attempted to ascend a 45° studded ramp in a mesocosm placed in a river. We also examined motivation to use the ramp in the presence of a conspecific alarm cue that signals predation risk.
Entrance (75%) and attraction efficiency (85%) were high, but reduced by the presence of alarm cue. In total, 98% of sea lamprey attracted to the base of the ramp ascended, and alarm cue had no effect. Time to ascend the ramp (post-release) was variable (1–521 min) and on average was 119 min (50% probability = 35 min). Few sea lamprey required multiple attempts to ascend (19.8%) and was more likely during longer transit times, with multiple ramp attachments, and with higher body mass. Propensity to attach to the ramp increased with number of attempts. The high efficacy of this design, compared to poor-mediocre efficiencies of similar designs in previous studies, may be related to water velocity and depth, geometry of substrate studs, substrate presentation (horizontal/vertical, and incline), and length of studded substrate.
Studded ramps represent a substantial opportunity for managers attempting to selectively pass anguilliform fishes over dams, aiding conservation efforts. Applications to the management of sea lamprey include removal in their non-native Great Lakes range, and fish passage in their native range.
Hume, J.B., Luhring, T.M. & Wagner, C.M.
In: Biological Invasions, vol. 22, pp. 2129–2142, 2020.
Abstract | Links | BibTeX | Tags: alarm cue, control, management, migration, sea lamprey, semiochemical, trap
@article{nokey,
title = {Push, pull, or push-pull? An alarm cue better guides sea lamprey towards capture devices than a mating pheromone during the reproductive migration},
author = {Hume, J.B., Luhring, T.M. & Wagner, C.M. },
url = {https://link.springer.com/article/10.1007/s10530-020-02242-4},
year = {2020},
date = {2020-03-16},
journal = {Biological Invasions},
volume = {22},
pages = {2129–2142},
abstract = {Widespread interest in the development of environmentally safe management actions has prompted research into the use of sensory cues to manipulate the movements of invasive species. The push–pull approach, for which attractive and repellent semiochemicals operate synergistically to guide individuals toward traps, has proven successful in insect pest management applications. We examined the effectiveness of a natural repellent (an alarm cue) and a natural attractant (a partial sex pheromone) in push-only (repel), pull-only (attract), and push–pull configurations, to guide invasive sea lamprey (Petromyzon marinus) toward and into a target trap during spawning migration into rivers. Using PIT telemetry to monitor sea lamprey movement within the river, we found that the alarm cue was capable of strongly altering sea lamprey distribution, “pushing” them toward target areas and generating rates of encounter with trap entrances sufficient to achieve trapping-for-control targets. Encounter rate with trap entrances was not improved, but performed more consistently, with the addition of the attractant in the push–pull configuration. There was evidence this could stem from a transition in internal state of motivation, from migration to reproduction. Use of the attractant alone was ineffective. No odor combination improved trap captures. We conclude that push–pull strategies will prove effective in guiding sea lamprey movements and recommend two improvements for subsequent testing in management scenarios: (1) use of a superior attractant (e.g. a sea lamprey migratory cue derived from conspecific larvae), and (2) its subsequent application to a capture methodology based on the entrainment of individuals near trap entrances.},
keywords = {alarm cue, control, management, migration, sea lamprey, semiochemical, trap},
pubstate = {published},
tppubtype = {article}
}
Widespread interest in the development of environmentally safe management actions has prompted research into the use of sensory cues to manipulate the movements of invasive species. The push–pull approach, for which attractive and repellent semiochemicals operate synergistically to guide individuals toward traps, has proven successful in insect pest management applications. We examined the effectiveness of a natural repellent (an alarm cue) and a natural attractant (a partial sex pheromone) in push-only (repel), pull-only (attract), and push–pull configurations, to guide invasive sea lamprey (Petromyzon marinus) toward and into a target trap during spawning migration into rivers. Using PIT telemetry to monitor sea lamprey movement within the river, we found that the alarm cue was capable of strongly altering sea lamprey distribution, “pushing” them toward target areas and generating rates of encounter with trap entrances sufficient to achieve trapping-for-control targets. Encounter rate with trap entrances was not improved, but performed more consistently, with the addition of the attractant in the push–pull configuration. There was evidence this could stem from a transition in internal state of motivation, from migration to reproduction. Use of the attractant alone was ineffective. No odor combination improved trap captures. We conclude that push–pull strategies will prove effective in guiding sea lamprey movements and recommend two improvements for subsequent testing in management scenarios: (1) use of a superior attractant (e.g. a sea lamprey migratory cue derived from conspecific larvae), and (2) its subsequent application to a capture methodology based on the entrainment of individuals near trap entrances.
2019
Docker, M.F. & Hume, J.B.
There and back again: lampreys in the 21st century and beyond Book Chapter
In: Docker, M. F. (Ed.): vol. 2, Chapter 7, pp. 527–570, Springer Dordrecht, 2019.
Abstract | Links | BibTeX | Tags: conservation, management
@inbook{nokey,
title = {There and back again: lampreys in the 21st century and beyond},
author = {Docker, M.F. & Hume, J.B.},
editor = {Docker, M.F.},
url = {https://link.springer.com/chapter/10.1007/978-94-024-1684-8_7},
year = {2019},
date = {2019-06-04},
urldate = {2019-06-04},
volume = {2},
pages = {527–570},
publisher = {Springer Dordrecht},
chapter = {7},
series = {Fish & Fisheries Series},
abstract = {The 21st century is proving to be an exciting time to study lamprey biology. Lampreys have long provided important insights into key developments in vertebrate evolution; research in support of sea lamprey control in the Laurentian Great Lakes has made significant contributions to our understanding of lamprey biology; and there is now (near) global interest in the conservation of threatened lamprey species. Furthermore, we are beginning to see a convergence of these formerly discrete research areas, as well as greater interactions and knowledge exchange between researchers and managers from different geographic regions. In this conclusion to Volumes 1 and 2 of Lampreys: Biology, Conservation and Control, we provide an overview of some exciting advances in our knowledge of lamprey biology and potential challenges facing lampreys and lamprey biologists in the near future. Recent advances and remaining knowledge gaps in many aspects of fundamental lamprey biology are covered in other chapters in these two volumes; here, we focus on the intersection of biology, conservation, and control. For example, molecular analysis has resolved many of the previous uncertainties regarding lamprey phylogenetic relationships, but continued uncertainties (e.g., the relationship between “paired” parasitic and non-parasitic lampreys) and lack of an explicit phylogenetic framework contribute to ongoing confusion among biologists regarding correct lamprey nomenclature. Although lamprey taxonomy will no doubt continue to be revised as we refine our hypotheses regarding the evolutionary relationships among lampreys, it is important that we: (1) use consistent and accepted species names to enable accurate communication between researchers and managers from different regions; and (2) recognize that conservation legislation acknowledges biological diversity below the species level (i.e., evolutionarily significant units, ESUs) so that genetically or otherwise distinct lamprey populations are eligible for protection without prematurely or inconsistently describing each as a distinct species. Novel methodologies that are contributing to our understanding of lamprey biology and that have exciting applications to lamprey conservation and control include: (1) improvements to deepwater larval sampling methods to help evaluate the extent to which lentic and deep riverine habitats are used by different lamprey species; (2) improved tools for monitoring the spawning migration; (3) environmental DNA (eDNA) and pheromone detection assays that have the potential to provide cost-effective supplements to traditional lamprey survey methods; and (4) genetic and genomic tools that are being used in a variety of ways to help refine our understanding of lamprey biology (e.g., mating systems, larval dispersal and growth rates) and to aid conservation and control efforts (e.g., elucidating genetic stock structure, monitoring the success of translocation efforts). Not surprisingly, advances and challenges related to lamprey control and conservation are often “two sides of the same coin.” This is particularly true with respect to passage of upstream migrants at anthropogenic barriers, and knowledge of lamprey behavior at barriers is being used to both block sea lamprey migration in Great Lakes tributaries and enhance passage efficiency for other lampreys elsewhere. Achieving successful lamprey conservation and control will also require positive public and legislative attitudes towards species in need of conservation and continued public support and acceptance of sea lamprey control efforts. Pursuit of genetic control options in particular will need to address ethical and societal concerns.},
keywords = {conservation, management},
pubstate = {published},
tppubtype = {inbook}
}
The 21st century is proving to be an exciting time to study lamprey biology. Lampreys have long provided important insights into key developments in vertebrate evolution; research in support of sea lamprey control in the Laurentian Great Lakes has made significant contributions to our understanding of lamprey biology; and there is now (near) global interest in the conservation of threatened lamprey species. Furthermore, we are beginning to see a convergence of these formerly discrete research areas, as well as greater interactions and knowledge exchange between researchers and managers from different geographic regions. In this conclusion to Volumes 1 and 2 of Lampreys: Biology, Conservation and Control, we provide an overview of some exciting advances in our knowledge of lamprey biology and potential challenges facing lampreys and lamprey biologists in the near future. Recent advances and remaining knowledge gaps in many aspects of fundamental lamprey biology are covered in other chapters in these two volumes; here, we focus on the intersection of biology, conservation, and control. For example, molecular analysis has resolved many of the previous uncertainties regarding lamprey phylogenetic relationships, but continued uncertainties (e.g., the relationship between “paired” parasitic and non-parasitic lampreys) and lack of an explicit phylogenetic framework contribute to ongoing confusion among biologists regarding correct lamprey nomenclature. Although lamprey taxonomy will no doubt continue to be revised as we refine our hypotheses regarding the evolutionary relationships among lampreys, it is important that we: (1) use consistent and accepted species names to enable accurate communication between researchers and managers from different regions; and (2) recognize that conservation legislation acknowledges biological diversity below the species level (i.e., evolutionarily significant units, ESUs) so that genetically or otherwise distinct lamprey populations are eligible for protection without prematurely or inconsistently describing each as a distinct species. Novel methodologies that are contributing to our understanding of lamprey biology and that have exciting applications to lamprey conservation and control include: (1) improvements to deepwater larval sampling methods to help evaluate the extent to which lentic and deep riverine habitats are used by different lamprey species; (2) improved tools for monitoring the spawning migration; (3) environmental DNA (eDNA) and pheromone detection assays that have the potential to provide cost-effective supplements to traditional lamprey survey methods; and (4) genetic and genomic tools that are being used in a variety of ways to help refine our understanding of lamprey biology (e.g., mating systems, larval dispersal and growth rates) and to aid conservation and control efforts (e.g., elucidating genetic stock structure, monitoring the success of translocation efforts). Not surprisingly, advances and challenges related to lamprey control and conservation are often “two sides of the same coin.” This is particularly true with respect to passage of upstream migrants at anthropogenic barriers, and knowledge of lamprey behavior at barriers is being used to both block sea lamprey migration in Great Lakes tributaries and enhance passage efficiency for other lampreys elsewhere. Achieving successful lamprey conservation and control will also require positive public and legislative attitudes towards species in need of conservation and continued public support and acceptance of sea lamprey control efforts. Pursuit of genetic control options in particular will need to address ethical and societal concerns.
Moser, M.L., Hume, J.B., Lampman, R., Aronsuu, K. & Jackson, A.
Lamprey early life history: insights from artificial propagation Book Chapter
In: Docker, M. F. (Ed.): vol. 2, pp. 187–245, Springer Dordrecht, 2019.
Abstract | Links | BibTeX | Tags: aquaculture
@inbook{nokey,
title = {Lamprey early life history: insights from artificial propagation},
author = {Moser, M.L., Hume, J.B., Lampman, R., Aronsuu, K. & Jackson, A.},
editor = {Docker, M.F.},
url = {https://link.springer.com/chapter/10.1007/978-94-024-1684-8_2},
year = {2019},
date = {2019-06-04},
urldate = {2019-06-04},
volume = {2},
pages = {187–245},
publisher = {Springer Dordrecht},
series = {Fish & Fisheries Series},
abstract = {Artificial propagation of lampreys was first developed to produce specimens for the study of evolutionary development in vertebrates. In recent years, artificially propagated larvae have been used to improve identification methods for native lamprey species, to study invasive sea lamprey Petromyzon marinus in the Laurentian Great Lakes and to provide animals for genomic studies, and for restoration and conservation research. In the course of developing methods for lamprey cultivation, insights into lamprey behavior, biology, genetics, and early life history have been gained. Broodstock holding has indicated that adult lampreys can be kept at extremely high densities when provided with cold, oxygenated water. Sexual maturation is controlled primarily by temperature, but may be affected by photoperiod, the presence of other lampreys, and suitable substrate. Fertilization and incubation experiments have revealed that gamete contact times are very short and that embryos are resilient to low flow, poor water quality, or variable substrates. Early larvae are also resilient to these factors and can tolerate abrupt changes in temperature and extended periods of starvation. However, they cannot survive sudden changes in water quality, excessive disturbance, and lack of adequate burrowing media. These observations have resulted in more efficient and effective lamprey propagation and have yielded important information about the early life stage requirements of lampreys in the wild. Further study is needed on a broader array of species to allow inter specific comparisons of early life history. However, information from lampreys receiving the most attention to date (European river lamprey Lampetra fluviatilis, sea lamprey, and Pacific lamprey Entosphenus tridentatus) indicates that culture and environmental requirements of the early life stages are remarkably similar, allowing generalization across species.},
keywords = {aquaculture},
pubstate = {published},
tppubtype = {inbook}
}
Artificial propagation of lampreys was first developed to produce specimens for the study of evolutionary development in vertebrates. In recent years, artificially propagated larvae have been used to improve identification methods for native lamprey species, to study invasive sea lamprey Petromyzon marinus in the Laurentian Great Lakes and to provide animals for genomic studies, and for restoration and conservation research. In the course of developing methods for lamprey cultivation, insights into lamprey behavior, biology, genetics, and early life history have been gained. Broodstock holding has indicated that adult lampreys can be kept at extremely high densities when provided with cold, oxygenated water. Sexual maturation is controlled primarily by temperature, but may be affected by photoperiod, the presence of other lampreys, and suitable substrate. Fertilization and incubation experiments have revealed that gamete contact times are very short and that embryos are resilient to low flow, poor water quality, or variable substrates. Early larvae are also resilient to these factors and can tolerate abrupt changes in temperature and extended periods of starvation. However, they cannot survive sudden changes in water quality, excessive disturbance, and lack of adequate burrowing media. These observations have resulted in more efficient and effective lamprey propagation and have yielded important information about the early life stage requirements of lampreys in the wild. Further study is needed on a broader array of species to allow inter specific comparisons of early life history. However, information from lampreys receiving the most attention to date (European river lamprey Lampetra fluviatilis, sea lamprey, and Pacific lamprey Entosphenus tridentatus) indicates that culture and environmental requirements of the early life stages are remarkably similar, allowing generalization across species.
2018
Hume, J.B., Recknagel, H., Bean, C.W., Adams, C.E. & Mable, B.K.
In: Molecular Ecology, vol. 27, iss. 22, pp. 4572–4590, 2018.
Abstract | Links | BibTeX | Tags: conservation, genetics, management, speciation
@article{nokey,
title = {RADseq and mate choice assays reveal unidirectional gene flow among three lamprey ecotypes despite weak assortative mating: insights into the formation and stability of multiple ecotypes in sympatry},
author = {Hume, J.B., Recknagel, H., Bean, C.W., Adams, C.E. & Mable, B.K. },
url = {https://doi.org/10.1111/mec.14881},
year = {2018},
date = {2018-09-25},
urldate = {2018-09-25},
journal = {Molecular Ecology},
volume = {27},
issue = {22},
pages = {4572–4590},
abstract = {Adaptive divergence with gene flow often results in complex patterns of variation within taxa exhibiting substantial ecological differences among populations. One example where this may have occurred is the parallel evolution of freshwater-resident nonparasitic lampreys from anadromous-parasitic ancestors. Previous studies have focused on transitions between these two phenotypic extremes, but here, we considered more complex evolutionary scenarios where an intermediate freshwater form that remains parasitic is found sympatrically with the other two ecotypes. Using population genomic analysis (restriction-associated DNA sequencing), we found that a freshwater-parasitic ecotype was highly distinct from an anadromous-parasitic form (Qlake-P = 96.8%, Fst = 0.154), but that a freshwater-nonparasitic form was almost completely admixed in Loch Lomond, Scotland. Demographic reconstructions indicated that both freshwater populations likely derived from a common freshwater ancestor. However, while the nonparasitic ecotype has experienced high levels of introgression from the anadromous-parasitic ecotype (Qanad-P = 37.7%), there is no evidence of introgression into the freshwater-parasitic ecotype. Paradoxically, mate choice experiments predicted high potential for gene flow: Males from all ecotypes were stimulated to spawn with freshwater-parasitic females, which released gametes in response to all ecotypes. Differentially fixed single nucleotide polymorphisms identified genes associated with growth and development, which could possibly influence the timing of metamorphosis, resulting in significant ecological differences between forms. This suggests that multiple lamprey ecotypes can persist in sympatry following shifts in adaptive peaks, due to environmental change during their repeated colonization of post-glacial regions, followed by periods of extensive gene flow among such diverging populations.},
keywords = {conservation, genetics, management, speciation},
pubstate = {published},
tppubtype = {article}
}
Adaptive divergence with gene flow often results in complex patterns of variation within taxa exhibiting substantial ecological differences among populations. One example where this may have occurred is the parallel evolution of freshwater-resident nonparasitic lampreys from anadromous-parasitic ancestors. Previous studies have focused on transitions between these two phenotypic extremes, but here, we considered more complex evolutionary scenarios where an intermediate freshwater form that remains parasitic is found sympatrically with the other two ecotypes. Using population genomic analysis (restriction-associated DNA sequencing), we found that a freshwater-parasitic ecotype was highly distinct from an anadromous-parasitic form (Qlake-P = 96.8%, Fst = 0.154), but that a freshwater-nonparasitic form was almost completely admixed in Loch Lomond, Scotland. Demographic reconstructions indicated that both freshwater populations likely derived from a common freshwater ancestor. However, while the nonparasitic ecotype has experienced high levels of introgression from the anadromous-parasitic ecotype (Qanad-P = 37.7%), there is no evidence of introgression into the freshwater-parasitic ecotype. Paradoxically, mate choice experiments predicted high potential for gene flow: Males from all ecotypes were stimulated to spawn with freshwater-parasitic females, which released gametes in response to all ecotypes. Differentially fixed single nucleotide polymorphisms identified genes associated with growth and development, which could possibly influence the timing of metamorphosis, resulting in significant ecological differences between forms. This suggests that multiple lamprey ecotypes can persist in sympatry following shifts in adaptive peaks, due to environmental change during their repeated colonization of post-glacial regions, followed by periods of extensive gene flow among such diverging populations.
Hume, J.B. & Wagner, C.M.
A death in the family: sea lamprey (Petromyzon marinus) avoidance of confamilial alarm cues diminishes with phylogenetic distance Journal Article
In: Ecology and Evolution, vol. 8, iss. 7, pp. 3751–3762, 2018.
Abstract | Links | BibTeX | Tags: alarm cue, evolution, sea lamprey
@article{nokey,
title = {A death in the family: sea lamprey (Petromyzon marinus) avoidance of confamilial alarm cues diminishes with phylogenetic distance},
author = {Hume, J.B. & Wagner, C.M. },
url = {https://doi.org/10.1002/ece3.3930},
year = {2018},
date = {2018-03-09},
urldate = {2018-03-09},
journal = {Ecology and Evolution},
volume = {8},
issue = {7},
pages = {3751–3762},
abstract = {Alarm signals released after predator attack function as reliable public information revealing areas of high risk. The utility of this information can extend beyond species boundaries, benefiting heterospecifics capable of recognizing and responding appropriately to the signal. Nonmutually exclusive hypotheses explaining the acquisition of heterospecific reactivity to cues suggest it could be conserved phylogenetically following its evolution in a common ancestor (a species-level effect) and/or learned during periods of shared risk (a population-level effect; e.g., shared predators). Using a laboratory-based space-use behavioral assay, we tested the response of sea lamprey (Petromyzon marinus) to the damage-released alarm cues of five confamilial (sympatric and allopatric) species and two distantly related out-groups: a sympatric teleost (white sucker Catostomus commersonii) and an allopatric agnathan (Atlantic hagfish Myxine glutinosa). We found that sea lamprey differed in their response to conspecific and heterospecific odors; exhibiting progressively weaker avoidance of cues derived from more phylogenetically distant confamilials regardless of current overlap in distribution. Odors from out-groups elicited no response. These findings suggest that a damage-released alarm cue is at least partially conserved within the Petromyzontidae and that sea lamprey perceives predator attacks directed to closely related taxa. These findings are consistent with similar observations from gastropod, amphibian and bony fish taxa, and we discuss this in an eco-evo context to provide a plausible explanation for the acquisition and maintenance of the response in sea lamprey.},
keywords = {alarm cue, evolution, sea lamprey},
pubstate = {published},
tppubtype = {article}
}
Alarm signals released after predator attack function as reliable public information revealing areas of high risk. The utility of this information can extend beyond species boundaries, benefiting heterospecifics capable of recognizing and responding appropriately to the signal. Nonmutually exclusive hypotheses explaining the acquisition of heterospecific reactivity to cues suggest it could be conserved phylogenetically following its evolution in a common ancestor (a species-level effect) and/or learned during periods of shared risk (a population-level effect; e.g., shared predators). Using a laboratory-based space-use behavioral assay, we tested the response of sea lamprey (Petromyzon marinus) to the damage-released alarm cues of five confamilial (sympatric and allopatric) species and two distantly related out-groups: a sympatric teleost (white sucker Catostomus commersonii) and an allopatric agnathan (Atlantic hagfish Myxine glutinosa). We found that sea lamprey differed in their response to conspecific and heterospecific odors; exhibiting progressively weaker avoidance of cues derived from more phylogenetically distant confamilials regardless of current overlap in distribution. Odors from out-groups elicited no response. These findings suggest that a damage-released alarm cue is at least partially conserved within the Petromyzontidae and that sea lamprey perceives predator attacks directed to closely related taxa. These findings are consistent with similar observations from gastropod, amphibian and bony fish taxa, and we discuss this in an eco-evo context to provide a plausible explanation for the acquisition and maintenance of the response in sea lamprey.
2017
Hume, J.B.
A review of the geographic distribution, status and conservation of Scotland’s lampreys Journal Article
In: The Glasgow Naturalist, vol. 26, iss. 4, 2017.
Links | BibTeX | Tags: conservation, distribution
@article{nokey,
title = {A review of the geographic distribution, status and conservation of Scotland’s lampreys},
author = {Hume, J.B.},
url = {https://www.glasgownaturalhistory.org.uk/gn26_4/Hume_lampreys_Scotland.pdf},
year = {2017},
date = {2017-10-01},
journal = {The Glasgow Naturalist},
volume = {26},
issue = {4},
keywords = {conservation, distribution},
pubstate = {published},
tppubtype = {article}
}
2016
Luhring, T.M., Meckley, T.D., Johnson, N.S., Siefkes, M.J., Hume, J.B. & Wagner, C.M.
A semelparous fish continues upstream migration when exposed to alarm cue, but adjusts movement speed and timing Journal Article
In: Animal Behaviour, vol. 121, pp. 41–51, 2016.
Abstract | Links | BibTeX | Tags: alarm cue, control, migration, sea lamprey
@article{nokey,
title = {A semelparous fish continues upstream migration when exposed to alarm cue, but adjusts movement speed and timing},
author = {Luhring, T.M., Meckley, T.D., Johnson, N.S., Siefkes, M.J., Hume, J.B. & Wagner, C.M.},
url = {https://doi.org/10.1016/j.anbehav.2016.08.007},
year = {2016},
date = {2016-11-01},
urldate = {2016-11-01},
journal = {Animal Behaviour},
volume = {121},
pages = {41–51},
abstract = {Animals make trade-offs between predation risk and pursuit of opportunities such as foraging and reproduction. Trade-offs between antipredator behaviours and foraging are well suited to manipulation in laboratory and field settings and have generated a vast compendium of knowledge. However, much less is known about how animals manage trade-offs between predation risk and pursuit of reproductive opportunities in the absence of the confounding effects of foraging. In the present study, we investigated how the nonfeeding migratory life stage of sea lamprey, Petromyzon marinus, responds to odour from dead conspecifics (a cue that induces avoidance behaviours in laboratory and field studies). We released groups of PIT-tagged sea lamprey 65 m from the shore of Lake Michigan or 287 m upstream in Carp Lake River and used antennas to detect their movements in the river. As the breeding season progressed, sea lamprey initiated upstream movement earlier and were more likely to enter the river. Sea lamprey that began the night in Lake Michigan entered Carp Lake River at higher rates and accelerated upstream when exposed to high concentrations of alarm cue, consistent with animals attempting to minimize time spent in risky areas. Sea lampreys that began the night in the river delayed upstream movement when exposed to alarm cue, consistent with animals sheltering and gathering information about a source of risk. We attribute this context-specific reaction to alarm cue to differences in perceived vulnerability to predation in sheltered positions in the river versus exposed positions in the lake. Once in the river, the vast majority of sea lamprey moved upstream independent of alarm cue or Julian date. Although life-history-induced time and energy budgets place rigid constraints on the direction of migration, sea lamprey attend to predation risk by modifying movement timing and speed.},
keywords = {alarm cue, control, migration, sea lamprey},
pubstate = {published},
tppubtype = {article}
}
Animals make trade-offs between predation risk and pursuit of opportunities such as foraging and reproduction. Trade-offs between antipredator behaviours and foraging are well suited to manipulation in laboratory and field settings and have generated a vast compendium of knowledge. However, much less is known about how animals manage trade-offs between predation risk and pursuit of reproductive opportunities in the absence of the confounding effects of foraging. In the present study, we investigated how the nonfeeding migratory life stage of sea lamprey, Petromyzon marinus, responds to odour from dead conspecifics (a cue that induces avoidance behaviours in laboratory and field studies). We released groups of PIT-tagged sea lamprey 65 m from the shore of Lake Michigan or 287 m upstream in Carp Lake River and used antennas to detect their movements in the river. As the breeding season progressed, sea lamprey initiated upstream movement earlier and were more likely to enter the river. Sea lamprey that began the night in Lake Michigan entered Carp Lake River at higher rates and accelerated upstream when exposed to high concentrations of alarm cue, consistent with animals attempting to minimize time spent in risky areas. Sea lampreys that began the night in the river delayed upstream movement when exposed to alarm cue, consistent with animals sheltering and gathering information about a source of risk. We attribute this context-specific reaction to alarm cue to differences in perceived vulnerability to predation in sheltered positions in the river versus exposed positions in the lake. Once in the river, the vast majority of sea lamprey moved upstream independent of alarm cue or Julian date. Although life-history-induced time and energy budgets place rigid constraints on the direction of migration, sea lamprey attend to predation risk by modifying movement timing and speed.
Byford, G.J., Wagner, C.M., Hume, J.B. & Moser, M.L.
In: North American Journal of Fisheries Management, vol. 36, iss. 5, pp. 1090–1096, 2016.
Abstract | Links | BibTeX | Tags: alarm cue, barrier, conservation, fishway, management, semiochemical
@article{nokey,
title = {Do native Pacific lamprey and invasive sea lamprey share an alarm cue? Implications for use of a natural repellent to guide imperiled Pacific lamprey into fishways},
author = {Byford, G.J., Wagner, C.M., Hume, J.B. & Moser, M.L.},
url = {https://doi.org/10.1080/02755947.2016.1198286},
year = {2016},
date = {2016-08-31},
journal = {North American Journal of Fisheries Management},
volume = {36},
issue = {5},
pages = {1090–1096},
abstract = {Instream barriers affect anadromous lampreys worldwide by preventing access to spawning habitat, resulting in the decline of several species. Because lampreys rely heavily on olfactory cues to choose movement paths during upstream migration in rivers, the manipulation of these cues may be used to guide individuals into the vicinity of fish passage devices and thereby mitigate the impacts of barriers during migration. However, because experimentation with imperiled species presents significant legal and ethical challenges, use of a surrogate species that exhibits similar responses may prove very useful. Our laboratory study established that (1) the odor derived from dead Pacific Lamprey Entosphenus tridentatus elicits an avoidance response from invasive Sea Lamprey Petromyzon marinus from the Laurentian Great Lakes, and (2) the magnitude of this response does not differ from the conspecific alarm cue present in Sea Lamprey. By presenting the odor on the side of a river channel opposite a lamprey fish passage device, migrating lampreys of conservation concern may be guided to fishways, if the behavioral response to the cue has evolved in these taxa. Due to their availability and well-studied chemical communication system, Sea Lamprey may prove to be a useful surrogate for identifying and producing chemosensory cues for use in guiding Pacific Lampreys towards fish passage devices and away from intakes and screens.},
keywords = {alarm cue, barrier, conservation, fishway, management, semiochemical},
pubstate = {published},
tppubtype = {article}
}
Instream barriers affect anadromous lampreys worldwide by preventing access to spawning habitat, resulting in the decline of several species. Because lampreys rely heavily on olfactory cues to choose movement paths during upstream migration in rivers, the manipulation of these cues may be used to guide individuals into the vicinity of fish passage devices and thereby mitigate the impacts of barriers during migration. However, because experimentation with imperiled species presents significant legal and ethical challenges, use of a surrogate species that exhibits similar responses may prove very useful. Our laboratory study established that (1) the odor derived from dead Pacific Lamprey Entosphenus tridentatus elicits an avoidance response from invasive Sea Lamprey Petromyzon marinus from the Laurentian Great Lakes, and (2) the magnitude of this response does not differ from the conspecific alarm cue present in Sea Lamprey. By presenting the odor on the side of a river channel opposite a lamprey fish passage device, migrating lampreys of conservation concern may be guided to fishways, if the behavioral response to the cue has evolved in these taxa. Due to their availability and well-studied chemical communication system, Sea Lamprey may prove to be a useful surrogate for identifying and producing chemosensory cues for use in guiding Pacific Lampreys towards fish passage devices and away from intakes and screens.
Wagner, C.M., Kierczynski, K.E., Hume, J.B. & Luhring, T.M.
Exposure to a putative alarm cue reduces downstream drift in larval sea lamprey (Petromyzon marinus) in the laboratory Journal Article
In: Journal of Fish Biology, vol. 89, iss. 3, pp. 1897–1904, 2016.
Abstract | Links | BibTeX | Tags: alarm cue, control, sea lamprey
@article{nokey,
title = {Exposure to a putative alarm cue reduces downstream drift in larval sea lamprey (Petromyzon marinus) in the laboratory},
author = {Wagner, C.M., Kierczynski, K.E., Hume, J.B. & Luhring, T.M.},
url = {https://doi.org/10.1111/jfb.13095},
year = {2016},
date = {2016-07-26},
urldate = {2016-07-26},
journal = {Journal of Fish Biology},
volume = {89},
issue = {3},
pages = {1897–1904},
abstract = {An experimental mesocosm study suggested larval sea lamprey Petromyzon marinus detect and respond to an alarm cue released by dead adult conspecifics. Larvae exhibited a reduced tendency to move downstream when exposed to the cue and were less likely to move under continuous v. pulsed exposure. These findings support the hypothesis that short-term exposure to the alarm cue would probably result in retraction into the burrow, consistent with the blind, cryptic lifestyle of the larval P. marinus.},
keywords = {alarm cue, control, sea lamprey},
pubstate = {published},
tppubtype = {article}
}
An experimental mesocosm study suggested larval sea lamprey Petromyzon marinus detect and respond to an alarm cue released by dead adult conspecifics. Larvae exhibited a reduced tendency to move downstream when exposed to the cue and were less likely to move under continuous v. pulsed exposure. These findings support the hypothesis that short-term exposure to the alarm cue would probably result in retraction into the burrow, consistent with the blind, cryptic lifestyle of the larval P. marinus.
2015
Hume, J.B., Meckley, T.D., Johnson, N.S., Luhring, T.M., Siefkes, M.J. & Wagner, C.M.
The application of an alarm cue in a push-pull configuration hastens arrival of invasive sea lamprey (Petromyzon marinus) at a trapping location Journal Article
In: Canadian journal of Fisheries and Aquatic Sciences, vol. 72, iss. 12, pp. 1799–1806, 2015.
Abstract | Links | BibTeX | Tags: alarm cue, barrier, control, management, sea lamprey, trap
@article{nokey,
title = {The application of an alarm cue in a push-pull configuration hastens arrival of invasive sea lamprey (Petromyzon marinus) at a trapping location},
author = {Hume, J.B., Meckley, T.D., Johnson, N.S., Luhring, T.M., Siefkes, M.J. & Wagner, C.M. },
url = {https://doi.org/10.1139/cjfas-2014-0535},
year = {2015},
date = {2015-12-01},
urldate = {2015-12-01},
journal = {Canadian journal of Fisheries and Aquatic Sciences},
volume = {72},
issue = {12},
pages = {1799–1806},
abstract = {The sea lamprey Petromyzon marinus is an invasive pest in the Laurentian Great Lakes basin, threatening the persistence of important commercial and recreational fisheries. There is substantial interest in developing effective trapping practices via the application of behavior-modifying semiochemicals (odors). Here we report on the effectiveness of utilizing repellent and attractant odors in a push–pull configuration, commonly employed to tackle invertebrate pests, to improve trapping efficacy at permanent barriers to sea lamprey migration. When a half-stream channel was activated by a naturally derived repellent odor (a putative alarm cue), we found that sea lamprey located a trap entrance significantly faster than when no odor was present as a result of their redistribution within the stream. The presence of a partial sex pheromone, acting as an attractant within the trap, was not found to further decrease the time to when sea lamprey located a trap entrance relative to when the alarm cue alone was applied. Neither the application of alarm cue singly nor alarm cue and partial sex pheromone in combination was found to improve the numbers of sea lamprey captured in the trap versus when no odor was present — likely because nominal capture rate during control trials was unusually high during the study period. Behavioural guidance using these odors has the potential to both improve control of invasive non-native sea lamprey in the Great Lakes as well as improving the efficiency of fish passage devices used in the restoration of threatened lamprey species elsewhere.},
keywords = {alarm cue, barrier, control, management, sea lamprey, trap},
pubstate = {published},
tppubtype = {article}
}
The sea lamprey Petromyzon marinus is an invasive pest in the Laurentian Great Lakes basin, threatening the persistence of important commercial and recreational fisheries. There is substantial interest in developing effective trapping practices via the application of behavior-modifying semiochemicals (odors). Here we report on the effectiveness of utilizing repellent and attractant odors in a push–pull configuration, commonly employed to tackle invertebrate pests, to improve trapping efficacy at permanent barriers to sea lamprey migration. When a half-stream channel was activated by a naturally derived repellent odor (a putative alarm cue), we found that sea lamprey located a trap entrance significantly faster than when no odor was present as a result of their redistribution within the stream. The presence of a partial sex pheromone, acting as an attractant within the trap, was not found to further decrease the time to when sea lamprey located a trap entrance relative to when the alarm cue alone was applied. Neither the application of alarm cue singly nor alarm cue and partial sex pheromone in combination was found to improve the numbers of sea lamprey captured in the trap versus when no odor was present — likely because nominal capture rate during control trials was unusually high during the study period. Behavioural guidance using these odors has the potential to both improve control of invasive non-native sea lamprey in the Great Lakes as well as improving the efficiency of fish passage devices used in the restoration of threatened lamprey species elsewhere.
Docker, M.F., Hume, J.B. & Clemens, B.
Introduction: a surfeit of lampreys Book Chapter
In: Docker, M. F. (Ed.): vol. 1, Chapter 1, pp. 1–34, Springer Dordrecht, 2015.
Abstract | Links | BibTeX | Tags:
@inbook{nokey,
title = {Introduction: a surfeit of lampreys},
author = {Docker, M.F., Hume, J.B. & Clemens, B.},
editor = {Docker, M.F.},
url = {https://link.springer.com/chapter/10.1007/978-94-017-9306-3_1},
year = {2015},
date = {2015-11-16},
urldate = {2015-11-16},
volume = {1},
pages = {1–34},
publisher = {Springer Dordrecht},
chapter = {1},
series = {Fish & Fisheries Series},
abstract = {Lampreys have long been the food of kings. They have been highly appreciated by the English monarchy and upper classes since medieval times, and long before that, by the ancient Romans, the Māori, and Native Americans. Historically, lampreys have also received attention from at least a small group of anatomists and other scientists (including Sigmund Freud), given their “lofty” status at the base of the vertebrate family tree (and their wonderfully large reticulospinal neurons that are so amenable to experimental manipulation). Research related to lamprey biology increased in the 1950s in support of sea lamprey control in the Laurentian Great Lakes, and these efforts considerably advanced our understanding of lamprey ecology, behavior, and chemical communication. Recently, lampreys have started getting more widespread attention. Research related to lamprey endocrinology (particularly the pivotal hypothalamic-pituitary axis and gonadotropin-releasing hormones), the ecology and conservation of native lampreys, and the use of lampreys in evolutionary developmental (evo-devo) and biomedical studies has raised the profile of this group of ancient fishes. Lampreys are providing important and promising model systems in our quest to better understand the early evolutionary history of the vertebrates—particularly given the recent publication of the complete sea lamprey genome—and their increasing use in biomedical research is providing insights into treatment for people suffering from blood coagulation disorders, biliary atresia, hemochromatosis, and spinal cord injuries. In this introduction to Vols. 1 and 2 of Lampreys: Biology, Conservation and Control, we provide a broad perspective on the cultural, ecological, and scientific importance of lampreys, outline some historical trends in lamprey research, and celebrate the growing interest—among scientists and laypeople—in this previously underappreciated group of fishes.},
keywords = {},
pubstate = {published},
tppubtype = {inbook}
}
Lampreys have long been the food of kings. They have been highly appreciated by the English monarchy and upper classes since medieval times, and long before that, by the ancient Romans, the Māori, and Native Americans. Historically, lampreys have also received attention from at least a small group of anatomists and other scientists (including Sigmund Freud), given their “lofty” status at the base of the vertebrate family tree (and their wonderfully large reticulospinal neurons that are so amenable to experimental manipulation). Research related to lamprey biology increased in the 1950s in support of sea lamprey control in the Laurentian Great Lakes, and these efforts considerably advanced our understanding of lamprey ecology, behavior, and chemical communication. Recently, lampreys have started getting more widespread attention. Research related to lamprey endocrinology (particularly the pivotal hypothalamic-pituitary axis and gonadotropin-releasing hormones), the ecology and conservation of native lampreys, and the use of lampreys in evolutionary developmental (evo-devo) and biomedical studies has raised the profile of this group of ancient fishes. Lampreys are providing important and promising model systems in our quest to better understand the early evolutionary history of the vertebrates—particularly given the recent publication of the complete sea lamprey genome—and their increasing use in biomedical research is providing insights into treatment for people suffering from blood coagulation disorders, biliary atresia, hemochromatosis, and spinal cord injuries. In this introduction to Vols. 1 and 2 of Lampreys: Biology, Conservation and Control, we provide a broad perspective on the cultural, ecological, and scientific importance of lampreys, outline some historical trends in lamprey research, and celebrate the growing interest—among scientists and laypeople—in this previously underappreciated group of fishes.
Bracken, F.S.A., Hoelzel, A.R., Hume, J.B. & Lucas, M.C.
In: Molecular Ecology, vol. 24, iss. 6, pp. 1188–1204, 2015.
Abstract | Links | BibTeX | Tags: barrier, evolution, genetics, speciation
@article{nokey,
title = {Contrasting population genetic structure among freshwater-resident and anadromous lampreys: the role of demographic history, differential dispersal, and anthropogenic barriers to movement},
author = {Bracken, F.S.A., Hoelzel, A.R., Hume, J.B. & Lucas, M.C.},
url = {https://doi.org/10.1111/mec.13112},
year = {2015},
date = {2015-02-16},
urldate = {2015-02-16},
journal = {Molecular Ecology},
volume = {24},
issue = {6},
pages = {1188–1204},
abstract = {The tendency of many species to abandon migration remains a poorly understood aspect of evolutionary biology that may play an important role in promoting species radiation by both allopatric and sympatric mechanisms. Anadromy inherently offers an opportunity for the colonization of freshwater environments, and the shift from an anadromous to a wholly freshwater life history has occurred in many families of fishes. Freshwater-resident forms have arisen repeatedly among lampreys (within the Petromyzontidae and Mordaciidae), and there has been much debate as to whether anadromous lampreys, and their derived freshwater-resident analogues, constitute distinct species or are divergent ecotypes of polymorphic species. Samples of 543 European river lamprey Lampetra fluviatilis (mostly from anadromous populations) and freshwater European brook lamprey Lampetra planeri from across 18 sites, primarily in the British Isles, were investigated for 13 polymorphic microsatellite DNA loci, and 108 samples from six of these sites were sequenced for 829 bp of mitochondrial DNA (mtDNA). We found contrasting patterns of population structure for mtDNA and microsatellite DNA markers, such that low diversity and little structure were seen for all populations for mtDNA (consistent with a recent founder expansion event), while fine-scale structuring was evident for nuclear markers. Strong differentiation for microsatellite DNA loci was seen among freshwater-resident L. planeri populations and between L. fluviatilis and L. planeri in most cases, but little structure was evident among anadromous L. fluviatilis populations. We conclude that postglacial colonization founded multiple freshwater-resident populations with strong habitat fidelity and limited dispersal tendencies that became highly differentiated, a pattern that was likely intensified by anthropogenic barriers.},
keywords = {barrier, evolution, genetics, speciation},
pubstate = {published},
tppubtype = {article}
}
The tendency of many species to abandon migration remains a poorly understood aspect of evolutionary biology that may play an important role in promoting species radiation by both allopatric and sympatric mechanisms. Anadromy inherently offers an opportunity for the colonization of freshwater environments, and the shift from an anadromous to a wholly freshwater life history has occurred in many families of fishes. Freshwater-resident forms have arisen repeatedly among lampreys (within the Petromyzontidae and Mordaciidae), and there has been much debate as to whether anadromous lampreys, and their derived freshwater-resident analogues, constitute distinct species or are divergent ecotypes of polymorphic species. Samples of 543 European river lamprey Lampetra fluviatilis (mostly from anadromous populations) and freshwater European brook lamprey Lampetra planeri from across 18 sites, primarily in the British Isles, were investigated for 13 polymorphic microsatellite DNA loci, and 108 samples from six of these sites were sequenced for 829 bp of mitochondrial DNA (mtDNA). We found contrasting patterns of population structure for mtDNA and microsatellite DNA markers, such that low diversity and little structure were seen for all populations for mtDNA (consistent with a recent founder expansion event), while fine-scale structuring was evident for nuclear markers. Strong differentiation for microsatellite DNA loci was seen among freshwater-resident L. planeri populations and between L. fluviatilis and L. planeri in most cases, but little structure was evident among anadromous L. fluviatilis populations. We conclude that postglacial colonization founded multiple freshwater-resident populations with strong habitat fidelity and limited dispersal tendencies that became highly differentiated, a pattern that was likely intensified by anthropogenic barriers.
2014
Hume, J.B., Bean, C.W. & Adams, C.E.
Morphological abnormalities in a population of Lampetra planeri, with a short review of petromyzontid teratologies Journal Article
In: Journal of Fish Biology, vol. 85, iss. 4, pp. 1614–1619, 2014.
Abstract | Links | BibTeX | Tags:
@article{nokey,
title = {Morphological abnormalities in a population of Lampetra planeri, with a short review of petromyzontid teratologies},
author = {Hume, J.B., Bean, C.W. & Adams, C.E. },
url = {https://doi.org/10.1111/jfb.12369},
year = {2014},
date = {2014-04-28},
urldate = {2014-04-28},
journal = {Journal of Fish Biology},
volume = {85},
issue = {4},
pages = {1614–1619},
abstract = {Reported here are several deviations (n = 15; 1·96%) from typical morphology in a large sample (n = 767) of European brook lamprey Lampetra planeri from a single population in the Loch Lomond catchment; this includes one specimen bearing a true anal fin. A brief review of petromyzontid teratology is provided.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Reported here are several deviations (n = 15; 1·96%) from typical morphology in a large sample (n = 767) of European brook lamprey Lampetra planeri from a single population in the Loch Lomond catchment; this includes one specimen bearing a true anal fin. A brief review of petromyzontid teratology is provided.
2013
Hume, J.B., Adams, C.E., Bean, C.W. & Maitland, P.S.
In: Journal of Fish Biology, vol. 82, iss. 5, pp. 1708–1716, 2013.
Abstract | Links | BibTeX | Tags: trophic ecology
@article{nokey,
title = {Evidence of a recent decline in lamprey parasitism of a nationally rare whitefish Coregonus lavaretus in Loch Lomond, Scotland: is there a diamond in the ruffe Gymnocephalus cernuus?},
author = {Hume, J.B., Adams, C.E., Bean, C.W. & Maitland, P.S. },
url = {https://doi.org/10.1111/jfb.12075},
year = {2013},
date = {2013-04-05},
urldate = {2013-04-05},
journal = {Journal of Fish Biology},
volume = {82},
issue = {5},
pages = {1708–1716},
abstract = {Lamprey-induced scarring of the nationally rare Coregonus lavaretus, a known host of a freshwater-resident population of European river lamprey Lampetra fluviatilis, was found to have declined precipitously since the establishment of several non-native fishes in Loch Lomond. Evidence presented in this study points to the possibility that L. fluviatilis in this lake may have altered its trophic ecology in response to the negative impact that non-native species, in particular ruffe Gymnocephalus cernuus, have had on their favoured host.},
keywords = {trophic ecology},
pubstate = {published},
tppubtype = {article}
}
Lamprey-induced scarring of the nationally rare Coregonus lavaretus, a known host of a freshwater-resident population of European river lamprey Lampetra fluviatilis, was found to have declined precipitously since the establishment of several non-native fishes in Loch Lomond. Evidence presented in this study points to the possibility that L. fluviatilis in this lake may have altered its trophic ecology in response to the negative impact that non-native species, in particular ruffe Gymnocephalus cernuus, have had on their favoured host.
Hume, J.B., Adams, C.E., Mable, B.W. & Bean, C.W.
Sneak male mating tactics between lampreys exhibiting alternative life history strategies Journal Article
In: Journal of Fish Biology, vol. 82, iss. 3, pp. 1093–1100, 2013.
Abstract | Links | BibTeX | Tags: evolution, speciation
@article{nokey,
title = {Sneak male mating tactics between lampreys exhibiting alternative life history strategies},
author = {Hume, J.B., Adams, C.E., Mable, B.W. & Bean, C.W. },
url = {https://doi.org/10.1111/jfb.12047},
year = {2013},
date = {2013-02-25},
urldate = {2013-02-25},
journal = {Journal of Fish Biology},
volume = {82},
issue = {3},
pages = {1093–1100},
abstract = {Interspecific sneak male mating tactics between paired lamprey species are described for the first time. Although alternative mating tactics among petromyzontids have been described previously, including intraspecific sneak males, the presence of sneak male tactics between parasitic and non-parasitic forms suggests that high levels of gene flow between putative lamprey species could remain high, despite large body size discrepancies.},
keywords = {evolution, speciation},
pubstate = {published},
tppubtype = {article}
}
Interspecific sneak male mating tactics between paired lamprey species are described for the first time. Although alternative mating tactics among petromyzontids have been described previously, including intraspecific sneak males, the presence of sneak male tactics between parasitic and non-parasitic forms suggests that high levels of gene flow between putative lamprey species could remain high, despite large body size discrepancies.
Hume, J.B., Adams, C.E., Mable, B. & Bean, C.W.
Post-zygotic hybrid viability in sympatric species pairs – a case study from European lampreys Journal Article
In: Biological Journal of the Linnaean Society, vol. 108, iss. 2, pp. 378–383, 2013.
Abstract | Links | BibTeX | Tags: evolution, speciation
@article{nokey,
title = {Post-zygotic hybrid viability in sympatric species pairs – a case study from European lampreys},
author = {Hume, J.B., Adams, C.E., Mable, B. & Bean, C.W. },
url = {https://doi.org/10.1111/j.1095-8312.2012.02007.x},
year = {2013},
date = {2013-01-17},
urldate = {2013-01-17},
journal = {Biological Journal of the Linnaean Society},
volume = {108},
issue = {2},
pages = {378–383},
abstract = {Ecological speciation mechanisms are widely assumed to play an important role in the early stages of divergence between incipient species, and this especially true of fishes. In the present study, we tested explicitly for post-zygotic barriers to gene flow between a sympatric, recently diverged lamprey species pair that likely arose through ecological divergence. Experimental in vitro hybridization between anadromous parasitic Lampetra fluviatilis and resident nonparasitic Lampetra planeri resulted in a high proportion of embryos capable of attaining the burrowing pro-larval stage, strongly indicating no post-zygotic barriers to gene flow between these species. A sympatric, locally-adapted resident parasitic form of L. fluviatilis was also found to successfully hybridize with both members of this species pair. The consequences of these findings are discussed in the context of lamprey speciation.},
keywords = {evolution, speciation},
pubstate = {published},
tppubtype = {article}
}
Ecological speciation mechanisms are widely assumed to play an important role in the early stages of divergence between incipient species, and this especially true of fishes. In the present study, we tested explicitly for post-zygotic barriers to gene flow between a sympatric, recently diverged lamprey species pair that likely arose through ecological divergence. Experimental in vitro hybridization between anadromous parasitic Lampetra fluviatilis and resident nonparasitic Lampetra planeri resulted in a high proportion of embryos capable of attaining the burrowing pro-larval stage, strongly indicating no post-zygotic barriers to gene flow between these species. A sympatric, locally-adapted resident parasitic form of L. fluviatilis was also found to successfully hybridize with both members of this species pair. The consequences of these findings are discussed in the context of lamprey speciation.
2012
Hume, J.B. & Adams, C.E.
First record of larval sea lamprey Petromyzon marinus L. in the Endrick Water, Loch Lomond Journal Article
In: The Glasgow Naturalist, vol. 24, iss. 4, 2012.
Links | BibTeX | Tags: distribution, sea lamprey
@article{nokey,
title = {First record of larval sea lamprey Petromyzon marinus L. in the Endrick Water, Loch Lomond},
author = {Hume, J.B. & Adams, C.E. },
url = {https://www.glasgownaturalhistory.org.uk/gn25_4/hume.pdf},
year = {2012},
date = {2012-10-01},
urldate = {2012-10-01},
journal = {The Glasgow Naturalist},
volume = {24},
issue = {4},
keywords = {distribution, sea lamprey},
pubstate = {published},
tppubtype = {article}
}