气候变化领域集成服务门户(CCPortal): Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance

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DOI	10.1038/s41559-021-01530-z
	Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance
	Kaufmann P.; Wolak M.E.; Husby A.; Immonen E.
发表日期	2021
ISSN	2397-334X
起始页码	1394
结束页码	1402
卷号	5 期号:10
英文摘要	Sexual dimorphism is ubiquitous in nature but its evolution is puzzling given that the mostly shared genome constrains independent evolution in the sexes. Sex differences should result from asymmetries between the sexes in selection or genetic variation but studies investigating both simultaneously are lacking. Here, we combine a quantitative genetic analysis of body size variation, partitioned into autosomal and sex chromosome contributions and ten generations of experimental evolution to dissect the evolution of sexual body size dimorphism in seed beetles (Callosobruchus maculatus) subjected to sexually antagonistic or sex-limited selection. Female additive genetic variance (VA) was primarily linked to autosomes, exhibiting a strong intersexual genetic correlation with males (rm,fa = 0.926), while X- and Y-linked genes further contributed to the male VA and X-linked genes contributed to female dominance variance. Consistent with these estimates, sexual body size dimorphism did not evolve in response to female-limited selection but evolved by 30–50% under male-limited and sexually antagonistic selection. Remarkably, Y-linked variance alone could change dimorphism by 30%, despite the C. maculatus Y chromosome being small and heterochromatic. Our results demonstrate how the potential for sexual dimorphism to evolve depends on both its underlying genetic basis and the nature of sex-specific selection. ? 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	animal; beetle; body size; female; genetics; male; sex chromosome; sexual characteristics; Y chromosomal inheritance; Animals; Body Size; Coleoptera; Female; Genes, Y-Linked; Male; Sex Characteristics; Sex Chromosomes
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/256853
作者单位	Evolutionary Biology, Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden; Department of Biological Sciences, Auburn University, Auburn, AL, United States
推荐引用方式 GB/T 7714	Kaufmann P.,Wolak M.E.,Husby A.,et al. Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance[J],2021,5(10).
APA	Kaufmann P.,Wolak M.E.,Husby A.,&Immonen E..(2021).Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance.Nature Ecology & Evolution,5(10).
MLA	Kaufmann P.,et al."Rapid evolution of sexual size dimorphism facilitated by Y-linked genetic variance".Nature Ecology & Evolution 5.10(2021).