气候变化领域集成服务门户(CCPortal): Linked supergenes underlie split sex ratio and social organization in an ant

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DOI	10.1073/pnas.2101427118
	Linked supergenes underlie split sex ratio and social organization in an ant
	Lagunas-Robles G.; Purcell J.; Brelsford A.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:46
英文摘要	Sexually reproducing organisms usually invest equally in male and female offspring. Deviations from this pattern have led researchers to new discoveries in the study of parent-offspring conflict, genomic conflict, and cooperative breeding. Some social insect species exhibit the unusual population-level pattern of split sex ratio, wherein some colonies specialize in the production of future queens and others specialize in the production of males. Theoretical work predicted that worker control of sex ratio and variation in relatedness asymmetry among colonies would cause each colony to specialize in the production of one sex. While some empirical tests supported theoretical predictions, others deviated from them, leaving many questions about how split sex ratio emerges. One factor yet to be investigated is whether colony sex ratio may be influenced by the genotypes of queens or workers. Here, we sequence the genomes of 138 Formica glacialis workers from 34 male-producing and 34 gyne-producing colonies to determine whether split sex ratio is under genetic control. We identify a supergene spanning 5.5 Mbp that is closely associated with sex allocation in this system. Strikingly, this supergene is adjacent to another supergene spanning 5 Mbp that is associated with variation in colony queen number. We identify a similar pattern in a second related species, Formica podzolica. The discovery that split sex ratio is determined, at least in part, by a supergene in two species opens future research on the evolutionary drivers of split sex ratio. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Genomic conflict; Hymenoptera; Sex allocation; Sex chromosome evolution; Social evolution
语种	英语
scopus关键词	adult; article; female; Formica; genetic regulation; genotype; human; male; nonhuman; prediction; sex allocation; sex chromosome; sex ratio; social evolution; social structure; theoretical study; worker
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238756
作者单位	Department of Evolution, Ecology and Organismal Biology, University of California, Riverside, CA 92521, United States; Department of Entomology, University of California, Riverside, CA 92521, United States
推荐引用方式 GB/T 7714	Lagunas-Robles G.,Purcell J.,Brelsford A.. Linked supergenes underlie split sex ratio and social organization in an ant[J],2021,118(46).
APA	Lagunas-Robles G.,Purcell J.,&Brelsford A..(2021).Linked supergenes underlie split sex ratio and social organization in an ant.Proceedings of the National Academy of Sciences of the United States of America,118(46).
MLA	Lagunas-Robles G.,et al."Linked supergenes underlie split sex ratio and social organization in an ant".Proceedings of the National Academy of Sciences of the United States of America 118.46(2021).