Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success
International audience Abstract Understanding foraging strategies and decision-making processes of predators provide crucial insights into how they might respond to changes in prey availability and in their environment to maximize their net energy input. In this work, foraging strategies of Antarcti...
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Online Access: | https://hal.science/hal-03652269 https://doi.org/10.1093/beheco/arac012 |
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ftunivrochelle:oai:HAL:hal-03652269v1 2024-05-12T07:54:31+00:00 Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success Chevallay, Mathilde Guinet, Christophe Jeanniard‐du‐dot, Tiphaine Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2022-04-13 https://hal.science/hal-03652269 https://doi.org/10.1093/beheco/arac012 en eng HAL CCSD Oxford University Press info:eu-repo/semantics/altIdentifier/doi/10.1093/beheco/arac012 hal-03652269 https://hal.science/hal-03652269 doi:10.1093/beheco/arac012 ISSN: 1045-2249 EISSN: 1465-7279 Behavioral Ecology https://hal.science/hal-03652269 Behavioral Ecology, 2022, 33 (3), pp.634-643. ⟨10.1093/beheco/arac012⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftunivrochelle https://doi.org/10.1093/beheco/arac012 2024-04-17T15:19:17Z International audience Abstract Understanding foraging strategies and decision-making processes of predators provide crucial insights into how they might respond to changes in prey availability and in their environment to maximize their net energy input. In this work, foraging strategies of Antarctic fur seals (Arctocephalus gazella, AFS) and Northern fur seals (Callorhinus ursinus, NFS) were studied to determine how they adjust their foraging behavior according to their past prey capture experiences. AFS on Kerguelen Islands are exclusively oceanic divers, while NFS population of St Paul Island shows both oceanic and neritic divers. We thus hypothesized that the two species would respond differently to a change in prey capture success depending on their foraging strategy. To test this, 40 females were equipped with tags that measured tri-axial acceleration, dive depth, and GPS coordinates, from which we derived prey capture attempts and behavioral metrics. Influence of prey capture success on horizontal and vertical movements of seals was investigated at different time scales: multi-dive, night, and trip. Both AFS and NFS traveled further during the day if they encountered low prey capture periods during the previous night. However, at the multi-dive scale, neritic NFS differed from oceanic NFS and AFS in terms of decision-making processes, e.g., both AFS and oceanic NFS dived deeper in response to low prey capture rate periods, while neritic NFS did not. Similarities in decision-making processes between NFS and AFS foraging on pelagic prey suggest that pelagic vs. neritic prey type is a key factor in defining foraging decisions of diving marine predators. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Kerguelen Islands Callorhinus ursinus HAL - Université de La Rochelle Antarctic Kerguelen Kerguelen Islands Behavioral Ecology 33 3 634 643 |
institution |
Open Polar |
collection |
HAL - Université de La Rochelle |
op_collection_id |
ftunivrochelle |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Chevallay, Mathilde Guinet, Christophe Jeanniard‐du‐dot, Tiphaine Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Abstract Understanding foraging strategies and decision-making processes of predators provide crucial insights into how they might respond to changes in prey availability and in their environment to maximize their net energy input. In this work, foraging strategies of Antarctic fur seals (Arctocephalus gazella, AFS) and Northern fur seals (Callorhinus ursinus, NFS) were studied to determine how they adjust their foraging behavior according to their past prey capture experiences. AFS on Kerguelen Islands are exclusively oceanic divers, while NFS population of St Paul Island shows both oceanic and neritic divers. We thus hypothesized that the two species would respond differently to a change in prey capture success depending on their foraging strategy. To test this, 40 females were equipped with tags that measured tri-axial acceleration, dive depth, and GPS coordinates, from which we derived prey capture attempts and behavioral metrics. Influence of prey capture success on horizontal and vertical movements of seals was investigated at different time scales: multi-dive, night, and trip. Both AFS and NFS traveled further during the day if they encountered low prey capture periods during the previous night. However, at the multi-dive scale, neritic NFS differed from oceanic NFS and AFS in terms of decision-making processes, e.g., both AFS and oceanic NFS dived deeper in response to low prey capture rate periods, while neritic NFS did not. Similarities in decision-making processes between NFS and AFS foraging on pelagic prey suggest that pelagic vs. neritic prey type is a key factor in defining foraging decisions of diving marine predators. |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Chevallay, Mathilde Guinet, Christophe Jeanniard‐du‐dot, Tiphaine |
author_facet |
Chevallay, Mathilde Guinet, Christophe Jeanniard‐du‐dot, Tiphaine |
author_sort |
Chevallay, Mathilde |
title |
Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success |
title_short |
Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success |
title_full |
Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success |
title_fullStr |
Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success |
title_full_unstemmed |
Should I stay or should I go? Behavioral adjustments of fur seals related to foraging success |
title_sort |
should i stay or should i go? behavioral adjustments of fur seals related to foraging success |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03652269 https://doi.org/10.1093/beheco/arac012 |
geographic |
Antarctic Kerguelen Kerguelen Islands |
geographic_facet |
Antarctic Kerguelen Kerguelen Islands |
genre |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Kerguelen Islands Callorhinus ursinus |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Arctocephalus gazella Kerguelen Islands Callorhinus ursinus |
op_source |
ISSN: 1045-2249 EISSN: 1465-7279 Behavioral Ecology https://hal.science/hal-03652269 Behavioral Ecology, 2022, 33 (3), pp.634-643. ⟨10.1093/beheco/arac012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/beheco/arac012 hal-03652269 https://hal.science/hal-03652269 doi:10.1093/beheco/arac012 |
op_doi |
https://doi.org/10.1093/beheco/arac012 |
container_title |
Behavioral Ecology |
container_volume |
33 |
container_issue |
3 |
container_start_page |
634 |
op_container_end_page |
643 |
_version_ |
1798849991480967168 |