Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility
International audience Diving is an ecologically important behaviour that provides air-breathing predators with opportunities to capture prey, butthat also increases their exposure to incidental mortality (bycatch) in commercial fisheries. In this study, we characterisedthe diving behaviour of 26 in...
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Online Access: | https://hal.archives-ouvertes.fr/hal-03144206 https://doi.org/10.1007/s00227-021-03841-y |
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ftccsdartic:oai:HAL:hal-03144206v1 2023-05-15T15:44:43+02:00 Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility Bentley, L. K. Kato, Akiko Ropert‐Coudert, Yan Manica, A. Phillips, Richard A. Department of Zoology Cambridge University of Cambridge UK (CAM) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2021 https://hal.archives-ouvertes.fr/hal-03144206 https://doi.org/10.1007/s00227-021-03841-y en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-021-03841-y hal-03144206 https://hal.archives-ouvertes.fr/hal-03144206 doi:10.1007/s00227-021-03841-y ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.archives-ouvertes.fr/hal-03144206 Marine Biology, Springer Verlag, 2021, 168 (36), pp.1-10. ⟨10.1007/s00227-021-03841-y⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2021 ftccsdartic https://doi.org/10.1007/s00227-021-03841-y 2021-10-23T23:59:47Z International audience Diving is an ecologically important behaviour that provides air-breathing predators with opportunities to capture prey, butthat also increases their exposure to incidental mortality (bycatch) in commercial fisheries. In this study, we characterisedthe diving behaviour of 26 individuals of three species, the black-browed albatross Thalassarche melanophris, grey-headedalbatross T. chrysostoma and light-mantled albatross Phoebetria palpebrata, breeding at Bird Island, South Georgia. Individualswere tracked using Global Location Sensor (GLS)-immersion loggers and time-depth recorders (TDRs) and, for twospecies, Global Positioning System (GPS) loggers. Although the TDRs recorded 589 dives (defined in this paper as submersion> 1 m), average dive depths and durations were just 1.30–1.49 m and 2.5–3.3 s, respectively, for the three species. Inaddition, many individuals (22% of black-browed, 20% of grey-headed, and 57% of light-mantled albatrosses; total n = 9, 10and 7 individuals, respectively) did not dive at all. Most dives occurred at the distal end of foraging trips and were rare duringthe commuting phase. No dives took place in darkness, despite long periods spent on water at night. The limited and shallowdive activity contrasts with impressions from a previous study using capillary-tube depth gauges (which are less accuratethan TDRs) and has implications for the susceptibility of albatrosses to bycatch on longlines. This study provides furthersupport for regulations requiring night setting and increased sink rates of baited hooks to help mitigate albatross bycatch. Article in Journal/Newspaper Bird Island Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) Marine Biology 168 3 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Bentley, L. K. Kato, Akiko Ropert‐Coudert, Yan Manica, A. Phillips, Richard A. Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Diving is an ecologically important behaviour that provides air-breathing predators with opportunities to capture prey, butthat also increases their exposure to incidental mortality (bycatch) in commercial fisheries. In this study, we characterisedthe diving behaviour of 26 individuals of three species, the black-browed albatross Thalassarche melanophris, grey-headedalbatross T. chrysostoma and light-mantled albatross Phoebetria palpebrata, breeding at Bird Island, South Georgia. Individualswere tracked using Global Location Sensor (GLS)-immersion loggers and time-depth recorders (TDRs) and, for twospecies, Global Positioning System (GPS) loggers. Although the TDRs recorded 589 dives (defined in this paper as submersion> 1 m), average dive depths and durations were just 1.30–1.49 m and 2.5–3.3 s, respectively, for the three species. Inaddition, many individuals (22% of black-browed, 20% of grey-headed, and 57% of light-mantled albatrosses; total n = 9, 10and 7 individuals, respectively) did not dive at all. Most dives occurred at the distal end of foraging trips and were rare duringthe commuting phase. No dives took place in darkness, despite long periods spent on water at night. The limited and shallowdive activity contrasts with impressions from a previous study using capillary-tube depth gauges (which are less accuratethan TDRs) and has implications for the susceptibility of albatrosses to bycatch on longlines. This study provides furthersupport for regulations requiring night setting and increased sink rates of baited hooks to help mitigate albatross bycatch. |
author2 |
Department of Zoology Cambridge University of Cambridge UK (CAM) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (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 |
Bentley, L. K. Kato, Akiko Ropert‐Coudert, Yan Manica, A. Phillips, Richard A. |
author_facet |
Bentley, L. K. Kato, Akiko Ropert‐Coudert, Yan Manica, A. Phillips, Richard A. |
author_sort |
Bentley, L. K. |
title |
Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
title_short |
Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
title_full |
Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
title_fullStr |
Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
title_full_unstemmed |
Diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
title_sort |
diving behaviour of albatrosses: implications for foraging ecology and bycatch susceptibility |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03144206 https://doi.org/10.1007/s00227-021-03841-y |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Bird Island |
geographic_facet |
Bird Island |
genre |
Bird Island |
genre_facet |
Bird Island |
op_source |
ISSN: 0025-3162 EISSN: 1432-1793 Marine Biology https://hal.archives-ouvertes.fr/hal-03144206 Marine Biology, Springer Verlag, 2021, 168 (36), pp.1-10. ⟨10.1007/s00227-021-03841-y⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00227-021-03841-y hal-03144206 https://hal.archives-ouvertes.fr/hal-03144206 doi:10.1007/s00227-021-03841-y |
op_doi |
https://doi.org/10.1007/s00227-021-03841-y |
container_title |
Marine Biology |
container_volume |
168 |
container_issue |
3 |
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1766379093302968320 |