Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies
Abstract Global fisheries kill millions of seabirds annually through bycatch, but little is known about population‐level impacts, particularly in species that form metapopulations. U.S. North Pacific groundfish fisheries catch thousands of Northern Fulmars ( Fulmarus glacialis rodgersii ) each year,...
Published in: | Evolutionary Applications |
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Online Access: | http://dx.doi.org/10.1111/eva.13357 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13357 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13357 |
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crwiley:10.1111/eva.13357 2024-06-02T08:06:52+00:00 Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies Baetscher, Diana S. Beck, Jessie Anderson, Eric C. Ruegg, Kristen Ramey, Andrew M. Hatch, Scott Nevins, Hannah Fitzgerald, Shannon M. Carlos Garza, John North Pacific Research Board 2022 http://dx.doi.org/10.1111/eva.13357 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13357 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13357 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Evolutionary Applications volume 15, issue 3, page 447-458 ISSN 1752-4571 1752-4571 journal-article 2022 crwiley https://doi.org/10.1111/eva.13357 2024-05-03T10:37:18Z Abstract Global fisheries kill millions of seabirds annually through bycatch, but little is known about population‐level impacts, particularly in species that form metapopulations. U.S. North Pacific groundfish fisheries catch thousands of Northern Fulmars ( Fulmarus glacialis rodgersii ) each year, making fulmars the most frequently caught seabird in federally managed U.S. fisheries. Here, we used genetic stock identification to assign 1,536 fulmars sampled as bycatch to one of four Alaska breeding colonies and quantified the similarity of bycatch locations at sea among colonies. We found disproportionately high bycatch from the Pribilof Islands (6% of metapopulation, 23% of bycatch), and disproportionately low bycatch from Chagulak Island (34% of metapopulation, 14% of bycatch). Overlap between fisheries and colony‐specific foraging areas diverge more during the summer breeding season, leading to greater differences in bycatch susceptibility. Contemporary and historical gene flow likely contributes to low genetic differentiation among colonies (F ST = 0.003–0.01), yet these values may not represent present connectivity. Our findings illustrate how genetic stock identification can link at‐sea threats to colonies and inform management to reduce bycatch from impacted colonies. Article in Journal/Newspaper Fulmarus glacialis Northern Fulmar Alaska Wiley Online Library Fulmar ENVELOPE(-46.016,-46.016,-60.616,-60.616) Pacific Evolutionary Applications |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Global fisheries kill millions of seabirds annually through bycatch, but little is known about population‐level impacts, particularly in species that form metapopulations. U.S. North Pacific groundfish fisheries catch thousands of Northern Fulmars ( Fulmarus glacialis rodgersii ) each year, making fulmars the most frequently caught seabird in federally managed U.S. fisheries. Here, we used genetic stock identification to assign 1,536 fulmars sampled as bycatch to one of four Alaska breeding colonies and quantified the similarity of bycatch locations at sea among colonies. We found disproportionately high bycatch from the Pribilof Islands (6% of metapopulation, 23% of bycatch), and disproportionately low bycatch from Chagulak Island (34% of metapopulation, 14% of bycatch). Overlap between fisheries and colony‐specific foraging areas diverge more during the summer breeding season, leading to greater differences in bycatch susceptibility. Contemporary and historical gene flow likely contributes to low genetic differentiation among colonies (F ST = 0.003–0.01), yet these values may not represent present connectivity. Our findings illustrate how genetic stock identification can link at‐sea threats to colonies and inform management to reduce bycatch from impacted colonies. |
author2 |
North Pacific Research Board |
format |
Article in Journal/Newspaper |
author |
Baetscher, Diana S. Beck, Jessie Anderson, Eric C. Ruegg, Kristen Ramey, Andrew M. Hatch, Scott Nevins, Hannah Fitzgerald, Shannon M. Carlos Garza, John |
spellingShingle |
Baetscher, Diana S. Beck, Jessie Anderson, Eric C. Ruegg, Kristen Ramey, Andrew M. Hatch, Scott Nevins, Hannah Fitzgerald, Shannon M. Carlos Garza, John Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies |
author_facet |
Baetscher, Diana S. Beck, Jessie Anderson, Eric C. Ruegg, Kristen Ramey, Andrew M. Hatch, Scott Nevins, Hannah Fitzgerald, Shannon M. Carlos Garza, John |
author_sort |
Baetscher, Diana S. |
title |
Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies |
title_short |
Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies |
title_full |
Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies |
title_fullStr |
Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies |
title_full_unstemmed |
Genetic assignment of fisheries bycatch reveals disproportionate mortality among Alaska Northern Fulmar breeding colonies |
title_sort |
genetic assignment of fisheries bycatch reveals disproportionate mortality among alaska northern fulmar breeding colonies |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/eva.13357 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eva.13357 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/eva.13357 |
long_lat |
ENVELOPE(-46.016,-46.016,-60.616,-60.616) |
geographic |
Fulmar Pacific |
geographic_facet |
Fulmar Pacific |
genre |
Fulmarus glacialis Northern Fulmar Alaska |
genre_facet |
Fulmarus glacialis Northern Fulmar Alaska |
op_source |
Evolutionary Applications volume 15, issue 3, page 447-458 ISSN 1752-4571 1752-4571 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/eva.13357 |
container_title |
Evolutionary Applications |
_version_ |
1800751854191116288 |