Pleistocene demographic histories dominate contemporary genomic diversity in a continental radiation of Himalayan-Hengduan songbirds

KIZ OpenIR > 科研部门 > 肿瘤生物学（陈策实）

	Pleistocene demographic histories dominate contemporary genomic diversity in a continental radiation of Himalayan-Hengduan songbirds
	Liu, YD; Hung, CM; He, YR; Wu, F; Yan, D; Song, G; Dong, F
	2026
发表期刊	Proc. Natl. Acad. Sci. U. S. A.
ISSN	0027-8424
卷号	L23 期号:6
摘要	Genetic diversity, the fundamental substrate for evolutionary potential, is declining globally at unprecedented rates. Yet the mechanisms governing its distribution across species remain poorly understood, with competing hypotheses emphasizing either historical demography or contemporary ecological constraints. This debate limits our capacity to predict species' responses to environmental change. Here, based on systematic sampling and a unified analytical pipeline, we de novo assembled genomes for 120 songbird species breeding in the Himalayas-Hengduan Mountains (HHMs) and conducted population genomic analysis to examine the drivers of their genomic diversity. We observed a 6.5-fold variation in genome-wide heterogeneity and a 16.4-fold variation nucleotide diversity across species. Notably, these measures of genomic diversity showed no correlation with recent population dynamics, current population size, or other contemporary factors-such as elevational distribution, or life-history traits. Instead, historical demography strongly predicted genetic diversity, with ancestral population size during the late Pleistocene emerging as the sole correlate: Larger ancestral sizes consistently coincided with higher diversity. These findings underscore the critical influence of historical demography on contemporary genetic diversity in natural populations-an insight essential for designing effective conservation strategies.
收录类别	SCIE
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kiz.ac.cn/handle/152453/15049
专题	科研部门_肿瘤生物学（陈策实）
推荐引用方式 GB/T 7714	Liu, YD,Hung, CM,He, YR,et al. Pleistocene demographic histories dominate contemporary genomic diversity in a continental radiation of Himalayan-Hengduan songbirds[J]. Proc. Natl. Acad. Sci. U. S. A.,2026,L23(6).
APA	Liu, YD.,Hung, CM.,He, YR.,Wu, F.,Yan, D.,...&Dong, F.(2026).Pleistocene demographic histories dominate contemporary genomic diversity in a continental radiation of Himalayan-Hengduan songbirds.Proc. Natl. Acad. Sci. U. S. A.,L23(6).
MLA	Liu, YD,et al."Pleistocene demographic histories dominate contemporary genomic diversity in a continental radiation of Himalayan-Hengduan songbirds".Proc. Natl. Acad. Sci. U. S. A. L23.6(2026).

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