期刊
HEREDITY
卷 110, 期 5, 页码 457-465出版社
SPRINGERNATURE
DOI: 10.1038/hdy.2012.114
关键词
Aegithalos concinnus; multilocus; cytonuclear discordance; male-biased gene flow; genetic consequence; male dispersal
资金
- National Science Fund for Distinguished Young Scientists [30925008]
- Major International (Regional) Joint Research Project [31010103901]
- NSFC [30870270]
Multilocus data from the different genomes are essential to understand the phylogeographic history of species, particularly when a species has the male-biased dispersal pattern. Although Black-throated tits (Aegithalos concinnus) are socially monogamous and cooperatively breeding birds, limited observational data suggested that males may have the ability of long-distance dispersal. We have previously detected three highly supported mitochondrial populations within two subspecies of Black-throated tits (A. c. concinnus and A. c. talifuensis). Here, we used several genetic markers with different inheritance patterns to gain insights about their phylogeographic history. Phylogenetic and individual-based Bayesian analysis showed weak geographical structure amongst nuclear sequences (autosomal and Z-chromosomal loci). Coalescent analysis revealed high levels of gene flow among mitochondrial populations, even between allopatric populations. These results strongly suggested that male-biased gene flow was responsible for the discordant cytonuclear phylogeographic patterns. Consistent with expectation on the genetic consequence of long-distance male dispersal, mantel tests revealed a significant pattern of isolation by distance for mitochondrial sequences, but failed to provide a similar pattern for nuclear genes within a continuous population; female Black-throated tits showed a stronger but not significantly different relationship of isolation by distance than males when using mitochondrial DNA alone. We discussed the contribution of male juveniles with delayed dispersal to the non-significantly different IBD patterns between sexes. Our results using multilocus genetic data revealed aspects of the complex evolutionary history of Black-throated tits and the important role of long-distance male dispersal in the population structuring. Heredity (2013) 110, 457-465; doi:10.1038/hdy.2012.114; published online 9 January 2013
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