2024
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
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., 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.