Minimal Genetic Structure in the Cerulean Warbler Despite Evidence for Ecological Differentiation Among Populations

The condor

Petra E. Deane¹ 

关键词: Conservation genetics;    dispersal;    population-genetic structure;    refugees from lost habitat;    Setophaga cerulea;   

DOI  :  10.1525/cond.2013.120031

学科分类：动物科学

来源: Central Ornithology Publication Office

【 摘 要 】

Abstract. The Cerulean Warbler (Setophaga cerulea) is one of the most rapidly declining warblers in North America. Our previous genetic work suggested that this migratory songbird has no significant population genetic structure in the northern and western parts of its breeding range, and for conservation purposes we assigned all sampled populations to a single genetic management unit. Here, we expand this work to include the entire breeding range of the Cerulean Warbler, given recent evidence for morphological and ecological differentiation between the northern and southern sections of that range. We assayed variation in four microsatellite loci and an 841-base-pair fragment of the mitochondrial control region, finding support for low but significant population-genetic structure in the mitochondrial marker. Estimates of population-genetic structure for pairs of sampling locations did not detect a clear geographic pattern of differentiation, and a hierarchical AMOVA did not reveal significant structure bet...

【 授权许可】

CC BY