Bottlenecks, isolation, and life at the northern range limit: Peary caribou on Ellesmere Island, Canada

作者: Stephen D. Petersen , Micheline Manseau , Paul J. Wilson

DOI: 10.1644/09-MAMM-A-231.1

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摘要: During his expeditions to the North Pole Robert Peary harvested at least 233 caribou (Rangifer tarandus pearyi) from northeast (NE) portion of Ellesmere Island, Nunavut, Canada. To assess impact this intensive local harvest we compared historic and contemporary samples. We explored 2 models repopulation for region. In recovery model animals not hunted by were source current population. recolonization adjacent regions contributed A genetic assessment mitochondrial DNA (mtDNA) diversity comparing specimens (n 5 12) samples same region 22) indicates loss 1 major mtDNA haplogroup. significantly differentiated one another. Combined 121) 9 nuclear loci 151) indicate that NE are most similar those in south. interpret as supporting our suggest that, following Peary, dispersed north central Ellesmere. Animals west (NW) showed greatest differentiation all other regions, suggesting although proximate distance, movement between NW might always have been limited. The was unique it contained predominant haplotype high frequency (0.88), lowest observed heterozygosity (HO 0.50), highest mean relatedness (R 0.063). Our combined results highlight sensitivity populations range limit stochastic events potential limits significant perturbations. DOI: 10.1644/09-MAMM-A-231.1.

参考文章(76)
Lynn M. Woodworth, Margaret E. Montgomery, David A. Briscoe, Richard Frankham, Rapid genetic deterioration in captive populations: Causes and conservation implications Conservation Genetics. ,vol. 3, pp. 277- 288 ,(2002) , 10.1023/A:1019954801089
Masatoshi Nei, Molecular Evolutionary Genetics ,(1987)
サトル コジマ, Kojima Satoru, VEGETATION AND ENVIRONMENT OF THE CANADIAN HIGH ARCTIC WITH SPECIAL REFERENCE TO CORNWALLIS ISLAND (Twelfth Symposium on Polar Biology) Proceedings of the NIPR Symposium on Polar Biology. ,vol. 4, pp. 135- 154 ,(1991)
N. MARTÍNKOVÁ, J. B. SEARLE, Amplification success rate of DNA from museum skin collections: a case study of stoats from 18 museums Molecular Ecology Notes. ,vol. 6, pp. 1014- 1017 ,(2006) , 10.1111/J.1471-8286.2006.01482.X
SEBASTIEN CALVIGNAC, SANDRINE HUGHES, CHRISTELLE TOUGARD, JACQUES MICHAUX, MICHEL THEVENOT, MICHEL PHILIPPE, WATIK HAMDINE, CATHERINE HÄNNI, Ancient DNA evidence for the loss of a highly divergent brown bear clade during historical times. Molecular Ecology. ,vol. 17, pp. 1962- 1970 ,(2008) , 10.1111/J.1365-294X.2008.03631.X
Réhaume Courtois, Louis Bernatchez, Jean-Pierre Ouellet, Laurier Breton, Significance of caribou (Rangifer tarandus) ecotypes from a molecular genetics viewpoint Conservation Genetics. ,vol. 4, pp. 393- 404 ,(2003) , 10.1023/A:1024033500799
Trenton W. J. Garner, Peter B. Pearman, Sonia Angelone, Genetic diversity across a vertebrate species’ range: a test of the central–peripheral hypothesis Molecular Ecology. ,vol. 13, pp. 1047- 1053 ,(2004) , 10.1111/J.1365-294X.2004.02119.X