The use of molecular diagnostics to infer migration directions of Willow Warblers in the southeast Baltic

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The use of molecular diagnostics to infer migration directions of Willow Warblers in the southeast Baltic. / Gursoy, Arzu; Chernetsov, Nikita; Lundberg, Max; Åkesson, Susanne; Bensch, Staffan.

I: Journal of Ornithology, Vol. 158, Nr. 3, 01.07.2017, s. 737-743.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

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T1 - The use of molecular diagnostics to infer migration directions of Willow Warblers in the southeast Baltic

AU - Gursoy, Arzu

AU - Chernetsov, Nikita

AU - Lundberg, Max

AU - Åkesson, Susanne

AU - Bensch, Staffan

PY - 2017/7/1

Y1 - 2017/7/1

N2 - The Willow Warbler (Phylloscopus trochilus, Linnaeus, 1758) is a long distance migrant and one of the most common breeding birds in the Western Palearctic. Its migratory directions have been studied in detail in Scandinavia where a narrow migratory divide is located around 62°30′ N that separates southern SW migrating Phylloscopus t. trochilus from SSE migrating Phylloscopus t. acredula. The shape and location of the migratory divide in the countries south and east of the Baltic Sea is less well understood. In this study we explored the geographic origin and migratory phenotype of the Willow Warbler during breeding and migration at Rybachy, Kaliningrad, Russia. The sampling was divided into three periods: breeding (1–9 July), early autumn migration (25–31 August), and late autumn migration (1–17 September). The birds were genotyped at two bi-allelic loci (AFLP-WW1 and AFLP-WW2) and the results were compared to genotypes from several reference breeding populations from around the Baltic Sea. Samples from the breeding and early migration periods were dominated by genotypes associated with SW-migrating trochilus. However, several intermediate genotypes were also present among breeding birds suggesting that this area overlaps the hybrid zone extending from territories south of the Baltic Sea. During late migration, birds carried genotypes that are common among north Scandinavian Willow Warblers that apparently pass Rybachy on their migration SSE to wintering areas in tropical East and South Africa.

AB - The Willow Warbler (Phylloscopus trochilus, Linnaeus, 1758) is a long distance migrant and one of the most common breeding birds in the Western Palearctic. Its migratory directions have been studied in detail in Scandinavia where a narrow migratory divide is located around 62°30′ N that separates southern SW migrating Phylloscopus t. trochilus from SSE migrating Phylloscopus t. acredula. The shape and location of the migratory divide in the countries south and east of the Baltic Sea is less well understood. In this study we explored the geographic origin and migratory phenotype of the Willow Warbler during breeding and migration at Rybachy, Kaliningrad, Russia. The sampling was divided into three periods: breeding (1–9 July), early autumn migration (25–31 August), and late autumn migration (1–17 September). The birds were genotyped at two bi-allelic loci (AFLP-WW1 and AFLP-WW2) and the results were compared to genotypes from several reference breeding populations from around the Baltic Sea. Samples from the breeding and early migration periods were dominated by genotypes associated with SW-migrating trochilus. However, several intermediate genotypes were also present among breeding birds suggesting that this area overlaps the hybrid zone extending from territories south of the Baltic Sea. During late migration, birds carried genotypes that are common among north Scandinavian Willow Warblers that apparently pass Rybachy on their migration SSE to wintering areas in tropical East and South Africa.

KW - AFLP

KW - Avian migration

KW - Migratory direction

KW - Migratory divide

KW - Phylloscopus trochilus

U2 - 10.1007/s10336-017-1434-y

DO - 10.1007/s10336-017-1434-y

M3 - Article

VL - 158

SP - 737

EP - 743

JO - Journal of Ornithology

JF - Journal of Ornithology

SN - 2193-7192

IS - 3

ER -