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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Högskolan Kristianstad, Forskningsmiljön Man & Biosphere Health (MABH)
2021
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-21865 https://doi.org/10.1242/bio.058655 |
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fthkristianstad:oai:DiVA.org:hkr-21865 2023-05-15T15:48:13+02:00 Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska Åkesson, Susanne Johanna, Grönroos Bianco, Giuseppe 2021 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-21865 https://doi.org/10.1242/bio.058655 eng eng Högskolan Kristianstad, Forskningsmiljön Man & Biosphere Health (MABH) Högskolan Kristianstad, Avdelningen för miljö- och biovetenskap Lunds universitet , 2021, 10:4, s. 1-10 Biology open, 2021, 10:4, s. 1-10 orcid:0000-0003-2051-5581 http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-21865 doi:10.1242/bio.058655 PMID 33913474 ISI:000672471900009 info:eu-repo/semantics/openAccess Bird migration magnetic compass orientation route simulation sun compass Ecology Ekologi Zoology Zoologi Article in journal info:eu-repo/semantics/article text 2021 fthkristianstad https://doi.org/10.1242/bio.058655 2022-07-29T13:28:10Z 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 alpina pacifica) 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 alpina arcticola 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. This project was part of the ‘Beringia 2005’ expedition organised by the Swedish Polar Research Secretariat Article in Journal/Newspaper Calidris alpina Swedish Polar Research Secretariat Alaska Beringia Kristianstad University College: Publications (DiVA) Gulf of Alaska Pacific Biology Open 10 4 |
institution |
Open Polar |
collection |
Kristianstad University College: Publications (DiVA) |
op_collection_id |
fthkristianstad |
language |
English |
topic |
Bird migration magnetic compass orientation route simulation sun compass Ecology Ekologi Zoology Zoologi |
spellingShingle |
Bird migration magnetic compass orientation route simulation sun compass Ecology Ekologi Zoology Zoologi Åkesson, Susanne Johanna, Grönroos Bianco, Giuseppe Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska |
topic_facet |
Bird migration magnetic compass orientation route simulation sun compass Ecology Ekologi Zoology Zoologi |
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 alpina pacifica) 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 alpina arcticola 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. This project was part of the ‘Beringia 2005’ expedition organised by the Swedish Polar Research Secretariat |
format |
Article in Journal/Newspaper |
author |
Åkesson, Susanne Johanna, Grönroos Bianco, Giuseppe |
author_facet |
Åkesson, Susanne Johanna, Grönroos 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 |
Högskolan Kristianstad, Forskningsmiljön Man & Biosphere Health (MABH) |
publishDate |
2021 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-21865 https://doi.org/10.1242/bio.058655 |
geographic |
Gulf of Alaska Pacific |
geographic_facet |
Gulf of Alaska Pacific |
genre |
Calidris alpina Swedish Polar Research Secretariat Alaska Beringia |
genre_facet |
Calidris alpina Swedish Polar Research Secretariat Alaska Beringia |
op_relation |
, 2021, 10:4, s. 1-10 Biology open, 2021, 10:4, s. 1-10 orcid:0000-0003-2051-5581 http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-21865 doi:10.1242/bio.058655 PMID 33913474 ISI:000672471900009 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1242/bio.058655 |
container_title |
Biology Open |
container_volume |
10 |
container_issue |
4 |
_version_ |
1766383215002517504 |