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  Individual variability and versatility in an eco-evolutionary model of avian migration

Delmore, K., Van Doren, B., Conway, G. J., Curk, T., Garrido-Garduno, T., Germain, R. R., et al. (2020). Individual variability and versatility in an eco-evolutionary model of avian migration. Proceedings of the Royal Society B: Biological Sciences, 287(1938): 20201339. doi:10.1098/rspb.2020.1339.

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Delmore, Kira1, Author              
Van Doren, Benjamin1, Author              
Conway, Greg J., Author
Curk, Teja, Author
Garrido-Garduno, Tania1, Author              
Germain, Ryan R., Author
Hasselmann, Timo1, Author              
Hiemer, Dieter, Author
van der Jeugd, Henk P., Author
Justen, Hannah1, Author              
Lugo Ramos, Juan Sebastian1, 2, Author              
Maggini, Ivan, Author
Meyer, Britta1, Author              
Phillips, Robbie J., Author
Remisiewicz, Magdalena, Author
Roberts, Graham C. M., Author
Sheldon, Ben C., Author
Vogl, Wolfgang, Author
Liedvogel, Miriam1, Author              
Affiliations:
1Max Planck Research Group Behavioural Genomics, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2129640              
2IMPRS for Evolutionary Biology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445639              

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Free keywords: migration, divide, timing, songbird, speciation,assortative mating
 Abstract: Seasonal migration is a complex and variable behaviour with the potential to promote reproductive isolation. In Eurasian blackcaps (Sylvia atricapilla), a migratory divide in central Europe separating populations with southwest (SW) and southeast (SE) autumn routes may facilitate isolation, and individuals using new wintering areas in Britain show divergence from Mediterranean winterers. We tracked 100 blackcaps in the wild to characterize these strategies. Blackcaps to the west and east of the divide used predominantly SW and SE directions, respectively, but close to the contact zone many individuals took intermediate (S) routes. At 14.0° E, we documented a sharp transition from SW to SE migratory directions across only 27 (10–86) km, implying a strong selection gradient across the divide. Blackcaps wintering in Britain took northwesterly migration routes from continental European breeding grounds. They originated from a surprisingly extensive area, spanning 2000 km of the breeding range. British winterers bred in sympatry with SW-bound migrants but arrived 9.8 days earlier on the breeding grounds, suggesting some potential for assortative mating by timing. Overall, our data reveal complex variation in songbird migration and suggest that selection can maintain variation in migration direction across short distances while enabling the spread of a novel strategy across a wide range.

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Language(s): eng - English
 Dates: 2020-06-092020-09-282020-11-042020-11-11
 Publication Status: Published in print
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 Identifiers: DOI: 10.1098/rspb.2020.1339
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Title: Proceedings of the Royal Society B: Biological Sciences
  Abbreviation : Proc. R. Soc. B
Source Genre: Journal
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Publ. Info: London : Royal Society
Pages: - Volume / Issue: 287 (1938) Sequence Number: 20201339 Start / End Page: - Identifier: ISSN: 0962-8452
CoNE: https://pure.mpg.de/cone/journals/resource/110975500577295_2