Journal
CONSERVATION GENETICS
Volume 8, Issue 3, Pages 513-526Publisher
SPRINGER
DOI: 10.1007/s10592-006-9165-2
Keywords
evolutionary significant unit; glacial refugia; grouse; mitochondrial DNA control region; Tetrao urogallus
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The Western capercaillie (Tetrao urogallus) is a keystone species of Palearctic boreal and altitude coniferous forests. With the increase of mountain leisure activities and habitat loss, populations are declining in most mountain ranges in Western Europe. Recent work has shown that the populations from the Pyrenees and Cantabrian Mountains survived a severe bottleneck during the 19th century, and are still considered as threatened due to habitat fragmentation and isolation with other populations. We present an extensive phylogeographic study based on mitochondrial DNA sequence (control region) extracted non-invasively from faeces collected throughout the species range (from western European mountains to central and eastern Europe, Fenno-Scandia, Russia and Siberia). We also compared our results with DNA sequences of closely related black-billed capercaillie (T. parvirostris). We found that populations from Pyrenees and Cantabrians are closely related but are different from all other capercaillie populations that form a homogenous clade. Therefore, we consider that these South-Western populations should be considered as forming an Evolutionary Significant Unit that needs an appropriate management at a local scale. We also discuss the possible locations of glacial refugia and subsequent colonisation routes in Eurasia, with a Western aquitanus lineage from Iberia and Balkans, and an Eastern urogallus lineage from Southern Asia. This work might have important implication for capercaillie conservation strategies to define important areas for conservation, and to prevent possible exchange or introductions of individuals originated from other lineages.
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