Intercontinental Gene Flow among Western Arctic Populations of Lesser Snow Geese

The condor

Rainy I. Shorey¹ 

关键词: Lesser Snow Goose;    Chen caerulescens caerulescens;    mtDNA;    microsatellites;    gene flow;    philopatry;    spatial genetic structure;   

DOI  :  10.1525/cond.2011.100009

学科分类：动物科学

来源: Central Ornithology Publication Office

【 摘 要 】

Abstract. Quantifying the spatial genetic structure of highly vagile species of birds is important in predicting their degree of population demographic and genetic independence during changing environmental conditions, and in assessing their abundance and distribution. In the western Arctic, Lesser Snow Geese (Chen caerulescens caerulescens) provide an example useful for evaluating spatial population genetic structure and the relative contribution of male and female philopatry to breeding and wintering locales. We analyzed biparentally inherited microsatellite loci and maternally inherited mtDNA sequences from geese breeding at Wrangel Island (Russia) and Banks Island (Canada) to estimate gene flow among populations whose geographic overlap during breeding and winter differ. Significant differences in the frequencies of mtDNA haplotypes contrast with the homogeneity of allele frequencies for microsatellite loci. Coalescence simulations revealed high variability and asymmetry between males and females in r...

【 授权许可】

CC BY