Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries
International audience Marine predators feeding on fisheries catches directly on the fishing gear, a behaviour termed “depredation”, has emerged as a major human-wildlife conflict globally, often resulting in substantial socio-economic and ecological impacts. This study investigated the extent of th...
Published in: | Reviews in Fish Biology and Fisheries |
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Main Authors: | , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2020
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Subjects: | |
Online Access: | https://hal.science/hal-02480925 https://doi.org/10.1007/s11160-020-09597-w |
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ftsorbonneuniv:oai:HAL:hal-02480925v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Sperm whales Killer whales Patagonian toothfish Fisheries interactions Subantarctic Depredation [SDE]Environmental Sciences |
spellingShingle |
Sperm whales Killer whales Patagonian toothfish Fisheries interactions Subantarctic Depredation [SDE]Environmental Sciences Tixier, Paul Burch, Paul Massiot-Granier, Félix Ziegler, Philippe Welsford, Dirk Lea, Mary-Anne Hindell, Mark Guinet, Christophe Wotherspoon, Simon Gasco, Nicolas Péron, Clara Duhamel, Guy Arangio, Rhys Tascheri, Renzo Somhlaba, Sobahle Arnould, John, P y Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
topic_facet |
Sperm whales Killer whales Patagonian toothfish Fisheries interactions Subantarctic Depredation [SDE]Environmental Sciences |
description |
International audience Marine predators feeding on fisheries catches directly on the fishing gear, a behaviour termed “depredation”, has emerged as a major human-wildlife conflict globally, often resulting in substantial socio-economic and ecological impacts. This study investigated the extent of this conflict in commercial Patagonian toothfish (Dissostichus eleginoides) fisheries across subantarctic waters where both killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) feed on toothfish caught on longline hooks. Using long-term datasets from six major fishing areas, from southern Chile to the Indian Ocean sector of the Southern Ocean, statistical models were developed to quantify the catch removals due to whale depredation interactions. The results indicated that these removals were large, totalling more than 6600 t of toothfish between 2009 and 2016 with an annual mean of 837 t [95% CI 480–1195 t], comprised of 317 t [232–403 t] and 518 t [247–790 t] removed by killer whales and sperm whales, respectively. Catch removals greatly varied between areas, with the largest estimates found at Crozet, where on average 279 t [179–379 t] of toothfish per year, equivalent to 30% [21–37%] of the total catches. Together, these findings provide metrics to assess the impacts of depredation interactions on the fishing industry, whale populations, fish stocks and associated ecosystems. With an estimated $15 M USD worth of fish depredated every year, this study highlights the large geographic scale and economic significance of the depredation issue and its potential to compromise the viability of some toothfish fisheries which are the primary socio-economic activity in subantarctic regions. |
author2 |
Deakin University Burwood Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) 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) Département Milieux et Peuplements Aquatiques Muséum national d'Histoire naturelle (MNHN) Coalition of Legal Toothfish Operators Australia (COLTO) Instituto de Fomento Pesquero Chili (IFOP) Department of Agriculture, Forestry and Fisheries Cape Town, Afrique du Sud (DAFF) ANR-17-CE32-0007,OrcaDepred,OrcaDepred - Evaluation des conséquences écologiques et socio-économiques de la déprédation exercée par les cétacés sur les pêcheries à la palangre : Mise en œuvre d'une approche technico-économique en vue de sa suppression(2017) |
format |
Article in Journal/Newspaper |
author |
Tixier, Paul Burch, Paul Massiot-Granier, Félix Ziegler, Philippe Welsford, Dirk Lea, Mary-Anne Hindell, Mark Guinet, Christophe Wotherspoon, Simon Gasco, Nicolas Péron, Clara Duhamel, Guy Arangio, Rhys Tascheri, Renzo Somhlaba, Sobahle Arnould, John, P y |
author_facet |
Tixier, Paul Burch, Paul Massiot-Granier, Félix Ziegler, Philippe Welsford, Dirk Lea, Mary-Anne Hindell, Mark Guinet, Christophe Wotherspoon, Simon Gasco, Nicolas Péron, Clara Duhamel, Guy Arangio, Rhys Tascheri, Renzo Somhlaba, Sobahle Arnould, John, P y |
author_sort |
Tixier, Paul |
title |
Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
title_short |
Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
title_full |
Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
title_fullStr |
Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
title_full_unstemmed |
Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
title_sort |
assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02480925 https://doi.org/10.1007/s11160-020-09597-w |
geographic |
Southern Ocean Indian |
geographic_facet |
Southern Ocean Indian |
genre |
Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean toothed whale |
genre_facet |
Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean toothed whale |
op_source |
ISSN: 0960-3166 EISSN: 1573-5184 Reviews in Fish Biology and Fisheries https://hal.science/hal-02480925 Reviews in Fish Biology and Fisheries, 2020, 30, pp.203-217. ⟨10.1007/s11160-020-09597-w⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11160-020-09597-w hal-02480925 https://hal.science/hal-02480925 doi:10.1007/s11160-020-09597-w |
op_doi |
https://doi.org/10.1007/s11160-020-09597-w |
container_title |
Reviews in Fish Biology and Fisheries |
container_volume |
30 |
container_issue |
1 |
container_start_page |
203 |
op_container_end_page |
217 |
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1790606399742410752 |
spelling |
ftsorbonneuniv:oai:HAL:hal-02480925v1 2024-02-11T10:07:43+01:00 Assessing the impact of toothed whale depredation on socio-ecosystems and fishery management in wide-ranging subantarctic fisheries Tixier, Paul Burch, Paul Massiot-Granier, Félix Ziegler, Philippe Welsford, Dirk Lea, Mary-Anne Hindell, Mark Guinet, Christophe Wotherspoon, Simon Gasco, Nicolas Péron, Clara Duhamel, Guy Arangio, Rhys Tascheri, Renzo Somhlaba, Sobahle Arnould, John, P y Deakin University Burwood Commonwealth Scientific and Industrial Research Organisation Canberra (CSIRO) Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) Université de Caen Normandie (UNICAEN) Normandie Université (NU)-Normandie Université (NU)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles (UA) Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) 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) Département Milieux et Peuplements Aquatiques Muséum national d'Histoire naturelle (MNHN) Coalition of Legal Toothfish Operators Australia (COLTO) Instituto de Fomento Pesquero Chili (IFOP) Department of Agriculture, Forestry and Fisheries Cape Town, Afrique du Sud (DAFF) ANR-17-CE32-0007,OrcaDepred,OrcaDepred - Evaluation des conséquences écologiques et socio-économiques de la déprédation exercée par les cétacés sur les pêcheries à la palangre : Mise en œuvre d'une approche technico-économique en vue de sa suppression(2017) 2020 https://hal.science/hal-02480925 https://doi.org/10.1007/s11160-020-09597-w en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s11160-020-09597-w hal-02480925 https://hal.science/hal-02480925 doi:10.1007/s11160-020-09597-w ISSN: 0960-3166 EISSN: 1573-5184 Reviews in Fish Biology and Fisheries https://hal.science/hal-02480925 Reviews in Fish Biology and Fisheries, 2020, 30, pp.203-217. ⟨10.1007/s11160-020-09597-w⟩ Sperm whales Killer whales Patagonian toothfish Fisheries interactions Subantarctic Depredation [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2020 ftsorbonneuniv https://doi.org/10.1007/s11160-020-09597-w 2024-01-23T23:51:07Z International audience Marine predators feeding on fisheries catches directly on the fishing gear, a behaviour termed “depredation”, has emerged as a major human-wildlife conflict globally, often resulting in substantial socio-economic and ecological impacts. This study investigated the extent of this conflict in commercial Patagonian toothfish (Dissostichus eleginoides) fisheries across subantarctic waters where both killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) feed on toothfish caught on longline hooks. Using long-term datasets from six major fishing areas, from southern Chile to the Indian Ocean sector of the Southern Ocean, statistical models were developed to quantify the catch removals due to whale depredation interactions. The results indicated that these removals were large, totalling more than 6600 t of toothfish between 2009 and 2016 with an annual mean of 837 t [95% CI 480–1195 t], comprised of 317 t [232–403 t] and 518 t [247–790 t] removed by killer whales and sperm whales, respectively. Catch removals greatly varied between areas, with the largest estimates found at Crozet, where on average 279 t [179–379 t] of toothfish per year, equivalent to 30% [21–37%] of the total catches. Together, these findings provide metrics to assess the impacts of depredation interactions on the fishing industry, whale populations, fish stocks and associated ecosystems. With an estimated $15 M USD worth of fish depredated every year, this study highlights the large geographic scale and economic significance of the depredation issue and its potential to compromise the viability of some toothfish fisheries which are the primary socio-economic activity in subantarctic regions. Article in Journal/Newspaper Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean toothed whale HAL Sorbonne Université Southern Ocean Indian Reviews in Fish Biology and Fisheries 30 1 203 217 |