Cytochrome b Phylogeography of Chamois (Rupicapra spp.). Population Contractions, Expansions and Hybridizations Governed the Diversification of the Genus

The chamois provides an excellent model for exploring the effect of historical and evolutionary events on diversification. We investigate cytochrome b (cytb) sequences in the 10 recognized subspecies of Rupicapra classified within 2 species: Rupicapra pyrenaica, with the subspecies parva, pyrenaica,...

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Bibliographic Details
Published in:The Journal of heredity 2009-01, Vol.100 (1), p.47-55
Main Authors: Rodríguez, Fernando, Hammer, Sabine, Pérez, Trinidad, Suchentrunk, Franz, Lorenzini, Rita, Michallet, Jacques, Martinkova, Natalia, Albornoz, Jesús, Domínguez, Ana
Format: Article
Language:English
Subjects:
Animals
Biogeography
chamois
Cytochromes b - genetics
DNA, Mitochondrial - genetics
Evolution, Molecular
Evolutionary biology
Gene Flow
Genetic Variation
Genetics, Population
Geography
Goats
Hybridization
Hybridization, Genetic - genetics
ice ages
mtDNA
Phylogeny
phylogeography
Population genetics
Rupicapra
Rupicapra - classification
Rupicapra - genetics
Rupicapra pyrenaica
Rupicapra rupicapra
taxonomy
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Summary:The chamois provides an excellent model for exploring the effect of historical and evolutionary events on diversification. We investigate cytochrome b (cytb) sequences in the 10 recognized subspecies of Rupicapra classified within 2 species: Rupicapra pyrenaica, with the subspecies parva, pyrenaica, and ornata, and Rupicapra rupicapra, with cartusiana, rupicapra, tatrica, carpatica, balcanica, asiatica, and caucasica. A fragment of 349 bp of the cytb was sequenced in 189 individuals. We identified 3 cytb lineages: Clade West in Iberia and Western Alps; Clade Central in the Apennines and the Massif of Chartreuse; and Clade East present in populations to the east of the Alps. The 2 proposed species were polyphyletic; the clades West and Central are represented in both, whereas the Clade East is restricted to R. rupicapra. In contrast to the current systematic, cytb phylogenies suggest the classification of the 10 subspecies of chamois into a single species, R. rupicapra. Phylogeny and geographical distribution of the 3 lineages show the effects of limited latitudinal range expansions, contractions, and hybridizations among highly divergent lineages, along with a major role of the glacial ice sheets of the Alps and the Pyrenees as barriers to gene flow, on the diversification of extant taxa.
ISSN:0022-1503
1465-7333
DOI:10.1093/jhered/esn074