A rapid loss of stripes: the evolutionary history of the extinct quagga

被引:47
作者
Leonard, JA
Rohland, N
Glaberman, S
Fleischer, RC
Caccone, A
Hofreiter, M
机构
[1] Max Planck Inst Evolutionary Anthrop, D-04103 Leipzig, Germany
[2] Yale Univ, Dept Ecol & Evolutionary Biol, New Haven, CT 06520 USA
[3] Yale Univ, YIBS, MSCG Lab, New Haven, CT 06520 USA
[4] Smithsonian Inst, Natl Museum Nat Hist, Genet Program, Washington, DC 20008 USA
关键词
ancient DNA; phylogeography; Africa; vicariance; Pleistocene; refugia;
D O I
10.1098/rsbl.2005.0323
中图分类号
Q [生物科学];
学科分类号
07 [理学]; 0710 [生物学]; 09 [农学];
摘要
Twenty years ago, the field of ancient DNA was launched with the publication of two short mitochondrial (mt) DNA sequences from a single quagga (Equus quagga) museum skin, an extinct South African equid (Higuchi et al. 1984 Nature 312, 282-284). This was the first extinct species from which genetic information was retrieved. The DNA sequences of the quagga showed that it was more closely related to zebras than to horses. However, quagga evolutionary history is far from clear. We have isolated DNA from eight quaggas and a plains zebra (subspecies or phenotype Equus burchelli burchelli). We show that the quagga displayed little genetic diversity and very recently diverged from the plains zebra, probably during the penultimate glacial maximum. This emphasizes the importance of Pleistocene climate changes for phylo-geographic patterns in African as well as Holarctic fauna.
引用
收藏
页码:291 / 295
页数:5
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