Killer whales are attracted to herring fishing vessels
Marine mammals and fisheries often target the same resources, which can lead to operational interactions. Potential consequences of operational interaction include entanglements and damaged or reduced catches but also enhanced foraging opportunities, which can attract marine mammals to fishing vesse...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2020
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/killer-whales-are-attracted-to-herring-fishing-vessels(ac8efb17-abed-4de4-ad5e-f6a9b8b93259).html https://doi.org/10.3354/meps13481 https://research-repository.st-andrews.ac.uk/bitstream/10023/20968/1/Mul_2020_MEPS_Killer_whales_CC.pdf |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/ac8efb17-abed-4de4-ad5e-f6a9b8b93259 2024-06-23T07:54:22+00:00 Killer whales are attracted to herring fishing vessels Mul, Evert Blanchet, Marie Anne McClintock, Brett T. Grecian, W. James Biuw, Martin Rikardsen, Audun 2020-10-15 application/pdf https://research-portal.st-andrews.ac.uk/en/researchoutput/killer-whales-are-attracted-to-herring-fishing-vessels(ac8efb17-abed-4de4-ad5e-f6a9b8b93259).html https://doi.org/10.3354/meps13481 https://research-repository.st-andrews.ac.uk/bitstream/10023/20968/1/Mul_2020_MEPS_Killer_whales_CC.pdf eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/killer-whales-are-attracted-to-herring-fishing-vessels(ac8efb17-abed-4de4-ad5e-f6a9b8b93259).html info:eu-repo/semantics/openAccess Mul , E , Blanchet , M A , McClintock , B T , Grecian , W J , Biuw , M & Rikardsen , A 2020 , ' Killer whales are attracted to herring fishing vessels ' , Marine Ecology Progress Series , vol. 652 , pp. 1-13 . https://doi.org/10.3354/meps13481 Attraction Behaviour Fishery interactions Herring fishery Hidden Markov model Killer whales MomentuHMM Orcinus orca article 2020 ftunstandrewcris https://doi.org/10.3354/meps13481 2024-06-13T01:13:04Z Marine mammals and fisheries often target the same resources, which can lead to operational interactions. Potential consequences of operational interaction include entanglements and damaged or reduced catches but also enhanced foraging opportunities, which can attract marine mammals to fishing vessels. Responsible fisheries management therefore requires detailed knowledge of the impact of these interactions. In northern Norway, killer whales Orcinus orca are frequently observed in association with large herring aggregations during the winter. We use a combination of biotelemetry and fisheries data to study if, to what extent and at what distances killer whales are attracted to fishing activity. Twenty-five satellite transmitters were deployed on killer whales at herring overwintering and spawning grounds, often near fishing vessels. Over 50% of the killer whale core areas of high usage overlapped with the fisheries core areas, and individual whales spent up to 34% of their time close to active fishing. We used a 3-state hidden Markov model to assess whether killer whale movements were biased towards fishing activities. Of the overall whale movements, 15% (CI = 11− 21%) were biased towards fishing activities, with marked heterogeneity among individuals (0−57%). During periods of active fishing, whale movements were biased towards fishing events 44% (CI = 24− 66%) of the time, with individual percentages ranging from 0 to 79%. Whales were more likely to be attracted when they were within 20 km. This information can be used in fishery management to consider potential consequences for fishers and whales. Article in Journal/Newspaper Killer Whale Northern Norway Orca Orcinus orca Killer whale University of St Andrews: Research Portal Norway Marine Ecology Progress Series 652 1 13 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Attraction Behaviour Fishery interactions Herring fishery Hidden Markov model Killer whales MomentuHMM Orcinus orca |
spellingShingle |
Attraction Behaviour Fishery interactions Herring fishery Hidden Markov model Killer whales MomentuHMM Orcinus orca Mul, Evert Blanchet, Marie Anne McClintock, Brett T. Grecian, W. James Biuw, Martin Rikardsen, Audun Killer whales are attracted to herring fishing vessels |
topic_facet |
Attraction Behaviour Fishery interactions Herring fishery Hidden Markov model Killer whales MomentuHMM Orcinus orca |
description |
Marine mammals and fisheries often target the same resources, which can lead to operational interactions. Potential consequences of operational interaction include entanglements and damaged or reduced catches but also enhanced foraging opportunities, which can attract marine mammals to fishing vessels. Responsible fisheries management therefore requires detailed knowledge of the impact of these interactions. In northern Norway, killer whales Orcinus orca are frequently observed in association with large herring aggregations during the winter. We use a combination of biotelemetry and fisheries data to study if, to what extent and at what distances killer whales are attracted to fishing activity. Twenty-five satellite transmitters were deployed on killer whales at herring overwintering and spawning grounds, often near fishing vessels. Over 50% of the killer whale core areas of high usage overlapped with the fisheries core areas, and individual whales spent up to 34% of their time close to active fishing. We used a 3-state hidden Markov model to assess whether killer whale movements were biased towards fishing activities. Of the overall whale movements, 15% (CI = 11− 21%) were biased towards fishing activities, with marked heterogeneity among individuals (0−57%). During periods of active fishing, whale movements were biased towards fishing events 44% (CI = 24− 66%) of the time, with individual percentages ranging from 0 to 79%. Whales were more likely to be attracted when they were within 20 km. This information can be used in fishery management to consider potential consequences for fishers and whales. |
format |
Article in Journal/Newspaper |
author |
Mul, Evert Blanchet, Marie Anne McClintock, Brett T. Grecian, W. James Biuw, Martin Rikardsen, Audun |
author_facet |
Mul, Evert Blanchet, Marie Anne McClintock, Brett T. Grecian, W. James Biuw, Martin Rikardsen, Audun |
author_sort |
Mul, Evert |
title |
Killer whales are attracted to herring fishing vessels |
title_short |
Killer whales are attracted to herring fishing vessels |
title_full |
Killer whales are attracted to herring fishing vessels |
title_fullStr |
Killer whales are attracted to herring fishing vessels |
title_full_unstemmed |
Killer whales are attracted to herring fishing vessels |
title_sort |
killer whales are attracted to herring fishing vessels |
publishDate |
2020 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/killer-whales-are-attracted-to-herring-fishing-vessels(ac8efb17-abed-4de4-ad5e-f6a9b8b93259).html https://doi.org/10.3354/meps13481 https://research-repository.st-andrews.ac.uk/bitstream/10023/20968/1/Mul_2020_MEPS_Killer_whales_CC.pdf |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Killer Whale Northern Norway Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Northern Norway Orca Orcinus orca Killer whale |
op_source |
Mul , E , Blanchet , M A , McClintock , B T , Grecian , W J , Biuw , M & Rikardsen , A 2020 , ' Killer whales are attracted to herring fishing vessels ' , Marine Ecology Progress Series , vol. 652 , pp. 1-13 . https://doi.org/10.3354/meps13481 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/killer-whales-are-attracted-to-herring-fishing-vessels(ac8efb17-abed-4de4-ad5e-f6a9b8b93259).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps13481 |
container_title |
Marine Ecology Progress Series |
container_volume |
652 |
container_start_page |
1 |
op_container_end_page |
13 |
_version_ |
1802646502088114176 |