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.
2020
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.
2016
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.