Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands
Estimating cetacean interactions with fishery activities is challenging. Bycatch and chronic entanglements are responsible for thousands of cetacean deaths per year globally. This study represents the first systematic approach to the postmortem investigation of fishery interactions in stranded cetac...
Published in: | Frontiers in Veterinary Science |
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Language: | English |
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Frontiers Media S.A.
2020
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Online Access: | https://doi.org/10.3389/fvets.2020.567258 https://doaj.org/article/b4b105d8512d459e82d94eb55df8683f |
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ftdoajarticles:oai:doaj.org/article:b4b105d8512d459e82d94eb55df8683f 2023-05-15T15:36:11+02:00 Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands Raquel Puig-Lozano Antonio Fernández Eva Sierra Pedro Saavedra Cristian M. Suárez-Santana Jesús De la Fuente Josué Díaz-Delgado Ana Godinho Natalia García-Álvarez Daniele Zucca Aina Xuriach Marina Arregui Idaira Felipe-Jiménez Francesco Consoli Pablo J. Díaz-Santana Simone Segura-Göthlin Nakita Câmara Miguel A. Rivero Simona Sacchini Yara Bernaldo de Quirós Manuel Arbelo 2020-10-01T00:00:00Z https://doi.org/10.3389/fvets.2020.567258 https://doaj.org/article/b4b105d8512d459e82d94eb55df8683f EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fvets.2020.567258/full https://doaj.org/toc/2297-1769 2297-1769 doi:10.3389/fvets.2020.567258 https://doaj.org/article/b4b105d8512d459e82d94eb55df8683f Frontiers in Veterinary Science, Vol 7 (2020) fisherman aggressions peracute underwater entrapment entanglement bycatch Bryde's whale Atlantic spotted dolphin Veterinary medicine SF600-1100 article 2020 ftdoajarticles https://doi.org/10.3389/fvets.2020.567258 2023-01-08T01:38:48Z Estimating cetacean interactions with fishery activities is challenging. Bycatch and chronic entanglements are responsible for thousands of cetacean deaths per year globally. This study represents the first systematic approach to the postmortem investigation of fishery interactions in stranded cetaceans in the Canary Islands. We retrospectively studied 586 cases necropsied between January 2000 and December 2018. Of the cases with a known cause of death, 7.4% (32/453) were due to fishery interactions, and the Atlantic spotted dolphin (Stenella frontalis) was the most affected species [46.9% (15/32)]. Three types of fishery interactions were recognized by gross findings: bycatch [65.6% (21/32)], chronic entanglements [18.8% (6/32)], and fishermen aggression [15.6% (5/32)]. Among the bycaught cases, we differentiated the dolphins that died because of ingestion of longline hooks [23.8% (5/21)] from those that died because of fishing net entrapments [76.2% (16/21)], including dolphins that presumably died at depth due to peracute underwater entrapment (PUE) [37.5% (6/16)], dolphins that were hauled out alive and suffered additional trauma during handling [43.8% (7/16)], and those that were released alive but became stranded and died because of fishery interactions [18.7% (3/16)]. Gross and histologic findings of animals in each group were presented and compared. The histological approach confirmed gross lesions and excluded other possible causes of death. Cetaceans in good-fair body condition and shallow diving species were significantly more affected by fishery interactions, in agreement with the literature. Low rates of fishery interactions have been described, compared with other regions. However, within the last few years, sightings of entangled live whales, especially the minke whale (Balaenoptera acutorostrata) and Bryde's whale (B. edeni), have increased. This study contributes to further improvement of the evaluation of different types of fishery interactions and may facilitate the enforcement of future ... Article in Journal/Newspaper Balaenoptera acutorostrata minke whale Directory of Open Access Journals: DOAJ Articles Frontiers in Veterinary Science 7 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
fisherman aggressions peracute underwater entrapment entanglement bycatch Bryde's whale Atlantic spotted dolphin Veterinary medicine SF600-1100 |
spellingShingle |
fisherman aggressions peracute underwater entrapment entanglement bycatch Bryde's whale Atlantic spotted dolphin Veterinary medicine SF600-1100 Raquel Puig-Lozano Antonio Fernández Eva Sierra Pedro Saavedra Cristian M. Suárez-Santana Jesús De la Fuente Josué Díaz-Delgado Ana Godinho Natalia García-Álvarez Daniele Zucca Aina Xuriach Marina Arregui Idaira Felipe-Jiménez Francesco Consoli Pablo J. Díaz-Santana Simone Segura-Göthlin Nakita Câmara Miguel A. Rivero Simona Sacchini Yara Bernaldo de Quirós Manuel Arbelo Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands |
topic_facet |
fisherman aggressions peracute underwater entrapment entanglement bycatch Bryde's whale Atlantic spotted dolphin Veterinary medicine SF600-1100 |
description |
Estimating cetacean interactions with fishery activities is challenging. Bycatch and chronic entanglements are responsible for thousands of cetacean deaths per year globally. This study represents the first systematic approach to the postmortem investigation of fishery interactions in stranded cetaceans in the Canary Islands. We retrospectively studied 586 cases necropsied between January 2000 and December 2018. Of the cases with a known cause of death, 7.4% (32/453) were due to fishery interactions, and the Atlantic spotted dolphin (Stenella frontalis) was the most affected species [46.9% (15/32)]. Three types of fishery interactions were recognized by gross findings: bycatch [65.6% (21/32)], chronic entanglements [18.8% (6/32)], and fishermen aggression [15.6% (5/32)]. Among the bycaught cases, we differentiated the dolphins that died because of ingestion of longline hooks [23.8% (5/21)] from those that died because of fishing net entrapments [76.2% (16/21)], including dolphins that presumably died at depth due to peracute underwater entrapment (PUE) [37.5% (6/16)], dolphins that were hauled out alive and suffered additional trauma during handling [43.8% (7/16)], and those that were released alive but became stranded and died because of fishery interactions [18.7% (3/16)]. Gross and histologic findings of animals in each group were presented and compared. The histological approach confirmed gross lesions and excluded other possible causes of death. Cetaceans in good-fair body condition and shallow diving species were significantly more affected by fishery interactions, in agreement with the literature. Low rates of fishery interactions have been described, compared with other regions. However, within the last few years, sightings of entangled live whales, especially the minke whale (Balaenoptera acutorostrata) and Bryde's whale (B. edeni), have increased. This study contributes to further improvement of the evaluation of different types of fishery interactions and may facilitate the enforcement of future ... |
format |
Article in Journal/Newspaper |
author |
Raquel Puig-Lozano Antonio Fernández Eva Sierra Pedro Saavedra Cristian M. Suárez-Santana Jesús De la Fuente Josué Díaz-Delgado Ana Godinho Natalia García-Álvarez Daniele Zucca Aina Xuriach Marina Arregui Idaira Felipe-Jiménez Francesco Consoli Pablo J. Díaz-Santana Simone Segura-Göthlin Nakita Câmara Miguel A. Rivero Simona Sacchini Yara Bernaldo de Quirós Manuel Arbelo |
author_facet |
Raquel Puig-Lozano Antonio Fernández Eva Sierra Pedro Saavedra Cristian M. Suárez-Santana Jesús De la Fuente Josué Díaz-Delgado Ana Godinho Natalia García-Álvarez Daniele Zucca Aina Xuriach Marina Arregui Idaira Felipe-Jiménez Francesco Consoli Pablo J. Díaz-Santana Simone Segura-Göthlin Nakita Câmara Miguel A. Rivero Simona Sacchini Yara Bernaldo de Quirós Manuel Arbelo |
author_sort |
Raquel Puig-Lozano |
title |
Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands |
title_short |
Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands |
title_full |
Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands |
title_fullStr |
Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands |
title_full_unstemmed |
Retrospective Study of Fishery Interactions in Stranded Cetaceans, Canary Islands |
title_sort |
retrospective study of fishery interactions in stranded cetaceans, canary islands |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fvets.2020.567258 https://doaj.org/article/b4b105d8512d459e82d94eb55df8683f |
genre |
Balaenoptera acutorostrata minke whale |
genre_facet |
Balaenoptera acutorostrata minke whale |
op_source |
Frontiers in Veterinary Science, Vol 7 (2020) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fvets.2020.567258/full https://doaj.org/toc/2297-1769 2297-1769 doi:10.3389/fvets.2020.567258 https://doaj.org/article/b4b105d8512d459e82d94eb55df8683f |
op_doi |
https://doi.org/10.3389/fvets.2020.567258 |
container_title |
Frontiers in Veterinary Science |
container_volume |
7 |
_version_ |
1766366521466028032 |