Phylogeography of the Alpine salamander, Salamandra atra (Salamandridae) and the influence of the Pleistocene climatic oscillations on population divergence

被引:36
作者
Riberon, A
Miaud, C
Grossenbacher, K
Taberlet, P
机构
[1] Univ Grenoble 1, Lab Biol Populat Altitude, CNRS, UMR 5553, F-38041 Grenoble 9, France
[2] Univ Savoie, CISM, CNRS, UMR 5553, F-73376 Le Bourget Du Lac, France
[3] Nat Hist Museum Burgergemeinde Bern, CH-3005 Bern, Switzerland
关键词
Alpine arc; cytochrome b; glacial history; mtDNA; phylogeography; population differentiation;
D O I
10.1046/j.1365-294X.2001.01373.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Fifty individuals of the endemic Alpine salamander, Salamandra atra, representing 13 populations throughout the range of the two currently recognized subspecies, atra and aurorae, were examined for sequence variation in a large portion (1050 bp) of the mitochondrial cytochrome b gene. We revealed a large number of mitochondrial DNA (mtDNA) haplotypes (10). Interpopulation sequence divergence was very low, ranging from 0 to 3.1%. The relationships among haplotypes were poorly resolved. The divergence time estimate between several mtDNA haplotypes suggested a pre-Pleistocene differentiation approximately 3 million years ago. Moreover, the impact of the Pleistocene glaciations on the phylogeographical patterns appears to have been secondary, although a somewhat reduced genetic variability was found in populations living in areas that were directly affected by the glaciation.
引用
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页码:2555 / 2560
页数:6
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