Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea
The harbor porpoise, Phocoena phocoena, is the only cetacean regularly occurring in the Baltic Sea. During the last decades, several anthropogenic activities have affected porpoises in the Baltic region. Most notably is bycatch in static fishing gear, such as gill nets, which is the main human-induc...
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ftpubmed:oai:pubmedcentral.nih.gov:8556710 2023-05-15T17:59:11+02:00 Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula 2021-10-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8556710/ http://www.ncbi.nlm.nih.gov/pubmed/34760359 https://doi.org/10.7717/peerj.12284 en eng PeerJ Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8556710/ http://www.ncbi.nlm.nih.gov/pubmed/34760359 http://dx.doi.org/10.7717/peerj.12284 ©2021 Brennecke et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. CC-BY PeerJ Animal Behavior Text 2021 ftpubmed https://doi.org/10.7717/peerj.12284 2021-11-14T01:32:02Z The harbor porpoise, Phocoena phocoena, is the only cetacean regularly occurring in the Baltic Sea. During the last decades, several anthropogenic activities have affected porpoises in the Baltic region. Most notably is bycatch in static fishing gear, such as gill nets, which is the main human-induced cause of death in odontocetes. There is still considerable uncertainty about which factors influence the amount of bycatch. In the present study, we reviewed bycatch data collected from 1987 to 2016 from the south-western Baltic Sea. There was a significant difference in bycatch due to seasonality and region, and there was a higher bycatch rate in juveniles than in adults. The only abiotic factor associated with bycatch was the lunar cycle, with more animals bycaught during a full moon. These results improve our understanding of which biotic and abiotic factors are associated with bycatch of Baltic harbor porpoises, which can be used to strengthen conservation endeavors such as managing fishing efforts. Text Phocoena phocoena PubMed Central (PMC) PeerJ 9 e12284 |
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English |
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Animal Behavior |
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Animal Behavior Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
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Animal Behavior |
description |
The harbor porpoise, Phocoena phocoena, is the only cetacean regularly occurring in the Baltic Sea. During the last decades, several anthropogenic activities have affected porpoises in the Baltic region. Most notably is bycatch in static fishing gear, such as gill nets, which is the main human-induced cause of death in odontocetes. There is still considerable uncertainty about which factors influence the amount of bycatch. In the present study, we reviewed bycatch data collected from 1987 to 2016 from the south-western Baltic Sea. There was a significant difference in bycatch due to seasonality and region, and there was a higher bycatch rate in juveniles than in adults. The only abiotic factor associated with bycatch was the lunar cycle, with more animals bycaught during a full moon. These results improve our understanding of which biotic and abiotic factors are associated with bycatch of Baltic harbor porpoises, which can be used to strengthen conservation endeavors such as managing fishing efforts. |
format |
Text |
author |
Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula |
author_facet |
Brennecke, Dennis Wahlberg, Magnus Gilles, Anita Siebert, Ursula |
author_sort |
Brennecke, Dennis |
title |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_short |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_full |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_fullStr |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_full_unstemmed |
Age and lunar cycle predict harbor porpoise bycatch in the south-western Baltic Sea |
title_sort |
age and lunar cycle predict harbor porpoise bycatch in the south-western baltic sea |
publisher |
PeerJ Inc. |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8556710/ http://www.ncbi.nlm.nih.gov/pubmed/34760359 https://doi.org/10.7717/peerj.12284 |
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Phocoena phocoena |
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Phocoena phocoena |
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PeerJ |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8556710/ http://www.ncbi.nlm.nih.gov/pubmed/34760359 http://dx.doi.org/10.7717/peerj.12284 |
op_rights |
©2021 Brennecke et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. |
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CC-BY |
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https://doi.org/10.7717/peerj.12284 |
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e12284 |
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