气候变化领域集成服务门户(CCPortal): Frequency-dependent selection maintains clonal diversity in an asexual organism

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DOI	10.1073/pnas.0806039105
	Frequency-dependent selection maintains clonal diversity in an asexual organism
	Weeks A.R.; Hoffmann A.A.
发表日期	2008
ISSN	0027-8424
起始页码	17872
结束页码	17877
卷号	105 期号:46
英文摘要	Asexual organisms can be genetically variable and evolve through time, yet it is not known how genetic diversity is maintained in populations. In sexual organisms, negative frequency-dependent selection plays a role in maintaining diversity at some loci, but in asexual organisms, this mechanism could provide a general explanation for persistent genetic diversity because it acts on the whole genome and not just on some polymorphisms within a genome. Using field manipulations, we show that negative frequency-dependent selection maintains clonal diversity in an asexual mite species, and we link predicted equilibrium clonal frequencies to average frequencies in space and time. Intense frequency-dependent selection is likely to be a general mechanism for persistent genetic diversity in asexual organisms. © 2008 by The National Academy of Sciences of the USA.
英文关键词	Clone; Genetic variation; Maintenance; Niche; Penthaleus major
语种	英语
scopus关键词	amplified fragment length polymorphism; article; clonal variation; controlled study; DNA fingerprinting; genetic polymorphism; genetic variability; mesocosm; mite; nonhuman; priority journal; Analysis of Variance; Animals; Clone Cells; Genetic Variation; Mites; Phylogeny; Population Dynamics; Regression Analysis; Reproduction, Asexual; Selection (Genetics); Acari; Penthaleus major
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/159007
作者单位	Weeks, A.R., Centre for Environmental Stress and Adaptation Research, Department of Genetics, University of Melbourne, Parkville, VIC 3010, Australia; Hoffmann, A.A., Centre for Environmental Stress and Adaptation Research, Department of Genetics, University of Melbourne, Parkville, VIC 3010, Australia
推荐引用方式 GB/T 7714	Weeks A.R.,Hoffmann A.A.. Frequency-dependent selection maintains clonal diversity in an asexual organism[J],2008,105(46).
APA	Weeks A.R.,&Hoffmann A.A..(2008).Frequency-dependent selection maintains clonal diversity in an asexual organism.Proceedings of the National Academy of Sciences of the United States of America,105(46).
MLA	Weeks A.R.,et al."Frequency-dependent selection maintains clonal diversity in an asexual organism".Proceedings of the National Academy of Sciences of the United States of America 105.46(2008).