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Autumn migratory or...
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Åkesson, SusanneLund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,Department of Biology,Faculty of Science,CAnMove - Centre for Animal Movement Research,Lund University Research Groups
(author)
Autumn migratory orientation and route choice in early and late dunlins Calidris alpina captured at a stopover site in Alaska
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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The Company of Biologists Ltd,2021
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:hkr-21865
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urn:nbn:se:hkr:diva-21865urn
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https://doi.org/10.1242/bio.058655DOI
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https://lup.lub.lu.se/record/f5cf7cb5-6067-4527-b098-12c5cb6bea34URI
Supplementary language notes
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Language:English
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Summary in:English
Part of subdatabase
Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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gratis
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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.
Subject headings and genre
Added entries (persons, corporate bodies, meetings, titles ...)
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Johanna, Grönroos,1971-Högskolan Kristianstad,Forskningsmiljön Man & Biosphere Health (MABH),Avdelningen för miljö- och biovetenskap(Swepub:hkr)grjo
(author)
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Bianco, GiuseppeLund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,CAnMove - Centrum för forskning om djurs spridning och flyttning,Forskargrupper vid Lunds universitet,Department of Biology,Faculty of Science,CAnMove - Centre for Animal Movement Research,Lund University Research Groups
(author)
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Grönroos, JohannaKristianstad University(Swepub:lu)zooe-jg0
(author)
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Biologiska institutionenNaturvetenskapliga fakulteten
(creator_code:org_t)
Related titles
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In:Biology open: The Company of Biologists Ltd10:4, s. 1-102046-6390
Internet link