Evidence of deep-sea interactions between toothed whales and longlines
International audience Toothed whales (odontocetes) feeding on fish caught on hooks in longline fisheries is a growing issue worldwide. The substantial impacts that this behaviour, called depredation, can have on the fishing economy, fish stocks and odontocetes populations, raise a critical need for...
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Online Access: | https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 https://doi.org/10.1007/s13280-019-01182-1 |
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ftccsdartic:oai:HAL:hal-02147241v1 |
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openpolar |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Depredation Demersal longlines Bio-logging Killer whales Patagonian toothfish Sperm whales [SDV.BA]Life Sciences [q-bio]/Animal biology [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition [SPI]Engineering Sciences [physics] [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM] |
spellingShingle |
Depredation Demersal longlines Bio-logging Killer whales Patagonian toothfish Sperm whales [SDV.BA]Life Sciences [q-bio]/Animal biology [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition [SPI]Engineering Sciences [physics] [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM] Richard, Gaëtan Bonnel, Julien Tixier, Paul Arnould, John Janc, Anaïs Guinet, Christophe Evidence of deep-sea interactions between toothed whales and longlines |
topic_facet |
Depredation Demersal longlines Bio-logging Killer whales Patagonian toothfish Sperm whales [SDV.BA]Life Sciences [q-bio]/Animal biology [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition [SPI]Engineering Sciences [physics] [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM] |
description |
International audience Toothed whales (odontocetes) feeding on fish caught on hooks in longline fisheries is a growing issue worldwide. The substantial impacts that this behaviour, called depredation, can have on the fishing economy, fish stocks and odontocetes populations, raise a critical need for mitigation solutions to be developed. However, information on when, where and how odontocete depredation occurs underwater is still limited, especially in demersal longline fisheries (fishing gear set on the seafloor). In the present study, we investigated depredation by killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) on demersal longlines in the French Patagonian toothfish fishery (Southern Ocean). Using a combination of animal-borne behavioural and longline-attached data loggers, we demonstrated that both species are able to depredate longlines on the seafloor. This study, therefore, suggests that odontocetes whales-longline interaction events at depth may be unrecorded when assessing depredation rates from surface observations during hauling phases only. This result has implications for the management of fisheries facing similar depredation issues as underestimated depredation rates may result in unaccounted fish mortality in fish-stock assessments. Therefore, while further research should be conducted to assess the extent of deep-sea whale-longline interaction events during soaking, the evidence that depredation can occur at any time during the whole fishing process as brought out by this study should be considered in future developments of mitigation solutions to the issue. |
author2 |
Lab-STICC_ENSTAB_CID_TOMS Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC) École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique) Institut Mines-Télécom Paris (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique) Institut Mines-Télécom Paris (IMT) 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) Woods Hole Oceanographic Institution (WHOI) School of Environmental and Life Sciences - SELS (Callaghan, Australia) University of Newcastle Australia (UoN) |
format |
Article in Journal/Newspaper |
author |
Richard, Gaëtan Bonnel, Julien Tixier, Paul Arnould, John Janc, Anaïs Guinet, Christophe |
author_facet |
Richard, Gaëtan Bonnel, Julien Tixier, Paul Arnould, John Janc, Anaïs Guinet, Christophe |
author_sort |
Richard, Gaëtan |
title |
Evidence of deep-sea interactions between toothed whales and longlines |
title_short |
Evidence of deep-sea interactions between toothed whales and longlines |
title_full |
Evidence of deep-sea interactions between toothed whales and longlines |
title_fullStr |
Evidence of deep-sea interactions between toothed whales and longlines |
title_full_unstemmed |
Evidence of deep-sea interactions between toothed whales and longlines |
title_sort |
evidence of deep-sea interactions between toothed whales and longlines |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 https://doi.org/10.1007/s13280-019-01182-1 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean toothed whales |
genre_facet |
Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean toothed whales |
op_source |
ISSN: 0044-7447 AMBIO: A Journal of the Human Environment https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 AMBIO: A Journal of the Human Environment, Springer Verlag, 2020, 49 (1), pp.173-186. ⟨10.1007/s13280-019-01182-1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s13280-019-01182-1 hal-02147241 https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 doi:10.1007/s13280-019-01182-1 |
op_doi |
https://doi.org/10.1007/s13280-019-01182-1 |
container_title |
Ambio |
container_volume |
49 |
container_issue |
1 |
container_start_page |
173 |
op_container_end_page |
186 |
_version_ |
1766161644240502784 |
spelling |
ftccsdartic:oai:HAL:hal-02147241v1 2023-05-15T17:53:56+02:00 Evidence of deep-sea interactions between toothed whales and longlines Richard, Gaëtan Bonnel, Julien Tixier, Paul Arnould, John Janc, Anaïs Guinet, Christophe Lab-STICC_ENSTAB_CID_TOMS Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC) École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique) Institut Mines-Télécom Paris (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom Paris (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique) Institut Mines-Télécom Paris (IMT) 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) Woods Hole Oceanographic Institution (WHOI) School of Environmental and Life Sciences - SELS (Callaghan, Australia) University of Newcastle Australia (UoN) 2020-01 https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 https://doi.org/10.1007/s13280-019-01182-1 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s13280-019-01182-1 hal-02147241 https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 doi:10.1007/s13280-019-01182-1 ISSN: 0044-7447 AMBIO: A Journal of the Human Environment https://hal-ensta-bretagne.archives-ouvertes.fr/hal-02147241 AMBIO: A Journal of the Human Environment, Springer Verlag, 2020, 49 (1), pp.173-186. ⟨10.1007/s13280-019-01182-1⟩ Depredation Demersal longlines Bio-logging Killer whales Patagonian toothfish Sperm whales [SDV.BA]Life Sciences [q-bio]/Animal biology [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition [SPI]Engineering Sciences [physics] [INFO.INFO-BI]Computer Science [cs]/Bioinformatics [q-bio.QM] info:eu-repo/semantics/article Journal articles 2020 ftccsdartic https://doi.org/10.1007/s13280-019-01182-1 2021-11-07T01:53:49Z International audience Toothed whales (odontocetes) feeding on fish caught on hooks in longline fisheries is a growing issue worldwide. The substantial impacts that this behaviour, called depredation, can have on the fishing economy, fish stocks and odontocetes populations, raise a critical need for mitigation solutions to be developed. However, information on when, where and how odontocete depredation occurs underwater is still limited, especially in demersal longline fisheries (fishing gear set on the seafloor). In the present study, we investigated depredation by killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) on demersal longlines in the French Patagonian toothfish fishery (Southern Ocean). Using a combination of animal-borne behavioural and longline-attached data loggers, we demonstrated that both species are able to depredate longlines on the seafloor. This study, therefore, suggests that odontocetes whales-longline interaction events at depth may be unrecorded when assessing depredation rates from surface observations during hauling phases only. This result has implications for the management of fisheries facing similar depredation issues as underestimated depredation rates may result in unaccounted fish mortality in fish-stock assessments. Therefore, while further research should be conducted to assess the extent of deep-sea whale-longline interaction events during soaking, the evidence that depredation can occur at any time during the whole fishing process as brought out by this study should be considered in future developments of mitigation solutions to the issue. Article in Journal/Newspaper Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean toothed whales Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Southern Ocean Ambio 49 1 173 186 |