Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska
We investigated the migratory orientation of early and late captured dunlins, Calidris alpina, by recording their migratory activity in circular orientation cages during autumn at a staging site in southwest Alaska and performed route simulations to the wintering areas. Two races of dunlins breeding...
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The Company of Biologists Ltd
2021
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Online Access: | https://lup.lub.lu.se/record/f5cf7cb5-6067-4527-b098-12c5cb6bea34 https://doi.org/10.1242/bio.058655 |
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ftulundlup:oai:lup.lub.lu.se:f5cf7cb5-6067-4527-b098-12c5cb6bea34 2024-04-21T07:59:10+00:00 Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska Åkesson, Susanne Grönroos, Johanna Bianco, Giuseppe 2021-04-15 https://lup.lub.lu.se/record/f5cf7cb5-6067-4527-b098-12c5cb6bea34 https://doi.org/10.1242/bio.058655 eng eng The Company of Biologists Ltd https://lup.lub.lu.se/record/f5cf7cb5-6067-4527-b098-12c5cb6bea34 http://dx.doi.org/10.1242/bio.058655 scopus:85105098253 pmid:33913474 Biology Open; 10(4) (2021) ISSN: 2046-6390 Zoology Bird migration Magnetic compass Orientation Route simulation Sun compass contributiontojournal/article info:eu-repo/semantics/article text 2021 ftulundlup https://doi.org/10.1242/bio.058655 2024-03-27T15:24:53Z We investigated the migratory orientation of early and late captured dunlins, Calidris alpina, by recording their migratory activity in circular orientation cages during autumn at a staging site in southwest Alaska and performed route simulations to the wintering areas. Two races of dunlins breeding in Alaska have different wintering grounds in North America (Pacific Northwest), and East Asia. Dunlins caught early in autumn (presumably Calidris alpinapacifica) oriented towards their wintering areas (east-southeast; ESE) supporting the idea that they migrate nonstop over the Gulf of Alaska to the Pacific Northwest. We found no difference in orientation between adult and juveniles, nor between fat and lean birds or under clear and overcast skies demonstrating that age, energetic status and cloud cover did not affect the dunlins' migratory orientation. Later in autumn, we recorded orientation responses towards south-southwest suggesting arrival of the northern subspecies Calidris alpinaarcticola at our site. Route simulations revealed multiple compass mechanisms were compatible with the initial direction of early dunlins wintering in the Pacific Northwest, and for late dunlins migrating to East Asia. Future high-resolution tracking would reveal routes, stopover use including local movements and possible course shifts during migration from Alaska to wintering sites on both sides of the north Pacific Ocean. Article in Journal/Newspaper Calidris alpina Alaska Lund University Publications (LUP) Biology Open 10 4 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Zoology Bird migration Magnetic compass Orientation Route simulation Sun compass |
spellingShingle |
Zoology Bird migration Magnetic compass Orientation Route simulation Sun compass Åkesson, Susanne Grönroos, Johanna Bianco, Giuseppe Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
topic_facet |
Zoology Bird migration Magnetic compass Orientation Route simulation Sun compass |
description |
We investigated the migratory orientation of early and late captured dunlins, Calidris alpina, by recording their migratory activity in circular orientation cages during autumn at a staging site in southwest Alaska and performed route simulations to the wintering areas. Two races of dunlins breeding in Alaska have different wintering grounds in North America (Pacific Northwest), and East Asia. Dunlins caught early in autumn (presumably Calidris alpinapacifica) oriented towards their wintering areas (east-southeast; ESE) supporting the idea that they migrate nonstop over the Gulf of Alaska to the Pacific Northwest. We found no difference in orientation between adult and juveniles, nor between fat and lean birds or under clear and overcast skies demonstrating that age, energetic status and cloud cover did not affect the dunlins' migratory orientation. Later in autumn, we recorded orientation responses towards south-southwest suggesting arrival of the northern subspecies Calidris alpinaarcticola at our site. Route simulations revealed multiple compass mechanisms were compatible with the initial direction of early dunlins wintering in the Pacific Northwest, and for late dunlins migrating to East Asia. Future high-resolution tracking would reveal routes, stopover use including local movements and possible course shifts during migration from Alaska to wintering sites on both sides of the north Pacific Ocean. |
format |
Article in Journal/Newspaper |
author |
Åkesson, Susanne Grönroos, Johanna Bianco, Giuseppe |
author_facet |
Åkesson, Susanne Grönroos, Johanna Bianco, Giuseppe |
author_sort |
Åkesson, Susanne |
title |
Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
title_short |
Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
title_full |
Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
title_fullStr |
Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
title_full_unstemmed |
Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
title_sort |
autumn migratory orientation and route choice in early and late dunlins calidris alpina captured at a stopover site in alaska |
publisher |
The Company of Biologists Ltd |
publishDate |
2021 |
url |
https://lup.lub.lu.se/record/f5cf7cb5-6067-4527-b098-12c5cb6bea34 https://doi.org/10.1242/bio.058655 |
genre |
Calidris alpina Alaska |
genre_facet |
Calidris alpina Alaska |
op_source |
Biology Open; 10(4) (2021) ISSN: 2046-6390 |
op_relation |
https://lup.lub.lu.se/record/f5cf7cb5-6067-4527-b098-12c5cb6bea34 http://dx.doi.org/10.1242/bio.058655 scopus:85105098253 pmid:33913474 |
op_doi |
https://doi.org/10.1242/bio.058655 |
container_title |
Biology Open |
container_volume |
10 |
container_issue |
4 |
_version_ |
1796940006941523968 |