Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean
The emergence of longline fishing around the world has been concomitant with an increase in depredation-interactions by odontocete whales (removal of fish caught on hooks), resulting in substantial socio-economic and ecological impacts. The extent, trends and underlying mechanisms driving these inte...
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ftpubmed:oai:pubmedcentral.nih.gov:6374415 2023-05-15T17:03:37+02:00 Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean Tixier, Paul Burch, Paul Richard, Gaetan Olsson, Karin Welsford, Dirk Lea, Mary-Anne Hindell, Mark A. Guinet, Christophe Janc, Anais Gasco, Nicolas Duhamel, Guy Villanueva, Maria Ching Suberg, Lavinia Arangio, Rhys Söffker, Marta Arnould, John P. Y. 2019-02-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374415/ http://www.ncbi.nlm.nih.gov/pubmed/30760725 https://doi.org/10.1038/s41598-018-36389-x en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374415/ http://www.ncbi.nlm.nih.gov/pubmed/30760725 http://dx.doi.org/10.1038/s41598-018-36389-x © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2019 ftpubmed https://doi.org/10.1038/s41598-018-36389-x 2019-02-24T01:16:38Z The emergence of longline fishing around the world has been concomitant with an increase in depredation-interactions by odontocete whales (removal of fish caught on hooks), resulting in substantial socio-economic and ecological impacts. The extent, trends and underlying mechanisms driving these interactions remain poorly known. Using long-term (2003–2017) datasets from seven major Patagonian toothfish (Dissostichus eleginoides) longline fisheries, this study assessed the levels and inter-annual trends of sperm whale (Physeter macrocephalus) and/or killer whale (Orcinus orca) interactions as proportions of fishing time (days) and fishing area (spatial cells). The role of fishing patterns in explaining between-fisheries variations of probabilities of odontocete interactions was investigated. While interaction levels remained globally stable since the early 2000s, they varied greatly between fisheries from 0 to >50% of the fishing days and area. Interaction probabilities were influenced by the seasonal concentration of fishing effort, size of fishing areas, density of vessels, their mobility and the depth at which they operated. The results suggest that between-fisheries variations of interaction probabilities are largely explained by the extent to which vessels provide whales with opportunities for interactions. Determining the natural distribution of whales will, therefore, allow fishers to implement better strategies of spatio-temporal avoidance of depredation. Text Killer Whale Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean Sperm whale Killer whale PubMed Central (PMC) Southern Ocean Scientific Reports 9 1 |
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Article Tixier, Paul Burch, Paul Richard, Gaetan Olsson, Karin Welsford, Dirk Lea, Mary-Anne Hindell, Mark A. Guinet, Christophe Janc, Anais Gasco, Nicolas Duhamel, Guy Villanueva, Maria Ching Suberg, Lavinia Arangio, Rhys Söffker, Marta Arnould, John P. Y. Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
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Article |
description |
The emergence of longline fishing around the world has been concomitant with an increase in depredation-interactions by odontocete whales (removal of fish caught on hooks), resulting in substantial socio-economic and ecological impacts. The extent, trends and underlying mechanisms driving these interactions remain poorly known. Using long-term (2003–2017) datasets from seven major Patagonian toothfish (Dissostichus eleginoides) longline fisheries, this study assessed the levels and inter-annual trends of sperm whale (Physeter macrocephalus) and/or killer whale (Orcinus orca) interactions as proportions of fishing time (days) and fishing area (spatial cells). The role of fishing patterns in explaining between-fisheries variations of probabilities of odontocete interactions was investigated. While interaction levels remained globally stable since the early 2000s, they varied greatly between fisheries from 0 to >50% of the fishing days and area. Interaction probabilities were influenced by the seasonal concentration of fishing effort, size of fishing areas, density of vessels, their mobility and the depth at which they operated. The results suggest that between-fisheries variations of interaction probabilities are largely explained by the extent to which vessels provide whales with opportunities for interactions. Determining the natural distribution of whales will, therefore, allow fishers to implement better strategies of spatio-temporal avoidance of depredation. |
format |
Text |
author |
Tixier, Paul Burch, Paul Richard, Gaetan Olsson, Karin Welsford, Dirk Lea, Mary-Anne Hindell, Mark A. Guinet, Christophe Janc, Anais Gasco, Nicolas Duhamel, Guy Villanueva, Maria Ching Suberg, Lavinia Arangio, Rhys Söffker, Marta Arnould, John P. Y. |
author_facet |
Tixier, Paul Burch, Paul Richard, Gaetan Olsson, Karin Welsford, Dirk Lea, Mary-Anne Hindell, Mark A. Guinet, Christophe Janc, Anais Gasco, Nicolas Duhamel, Guy Villanueva, Maria Ching Suberg, Lavinia Arangio, Rhys Söffker, Marta Arnould, John P. Y. |
author_sort |
Tixier, Paul |
title |
Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
title_short |
Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
title_full |
Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
title_fullStr |
Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
title_full_unstemmed |
Commercial fishing patterns influence odontocete whale-longline interactions in the Southern Ocean |
title_sort |
commercial fishing patterns influence odontocete whale-longline interactions in the southern ocean |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374415/ http://www.ncbi.nlm.nih.gov/pubmed/30760725 https://doi.org/10.1038/s41598-018-36389-x |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Killer Whale Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean Sperm whale Killer whale |
genre_facet |
Killer Whale Orca Orcinus orca Patagonian Toothfish Physeter macrocephalus Southern Ocean Sperm whale Killer whale |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374415/ http://www.ncbi.nlm.nih.gov/pubmed/30760725 http://dx.doi.org/10.1038/s41598-018-36389-x |
op_rights |
© The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-018-36389-x |
container_title |
Scientific Reports |
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9 |
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1 |
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1766057519521726464 |