气候变化领域集成服务门户(CCPortal): Shifting barriers and phenotypic diversification by hybridisation

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DOI	10.1111/ele.12766
	Shifting barriers and phenotypic diversification by hybridisation
	Sefc K.M.; Mattersdorfer K.; Ziegelbecker A.; Neuhüttler N.; Steiner O.; Goessler W.; Koblmüller S.
发表日期	2017
ISSN	1461-023X
EISSN	1461-0248
卷号	20 期号:5
英文摘要	The establishment of hybrid taxa relies on reproductive isolation from the parental forms, typically achieved by ecological differentiation. Here, we present an alternative mechanism, in which shifts in the strength and location of dispersal barriers facilitate diversification by hybridisation. Our case study concerns the highly diverse, stenotopic rock-dwelling cichlids of the African Great Lakes, many of which display geographic colour pattern variation. The littoral habitat of these fish has repeatedly been restructured in the course of ancient lake level fluctuations. Genetic data and an experimental cross support the hybrid origin of a distinct yellow-coloured variant of Tropheus moorii from ancient admixture between two allopatric, red and bluish variants. Deficient assortative mating preferences imply that reproductive isolation continues to be contingent on geographic separation. Linking paleolimnological data with the establishment of the hybrid variant, we sketch a selectively neutral diversification process governed solely by rearrangements of dispersal barriers. © 2017 John Wiley & Sons Ltd/CNRS
英文关键词	Carotenoid coloration; Cichlidae; climate change; colour pattern; environmental fluctuations; genetic admixture; hybrid speciation; Lake Tanganyika; mate choice; Tropheus
学科领域	Cichlidae; Tropheus; Tropheus moorii; fish protein; mitochondrial DNA; animal; cichlid; DNA sequence; genetic variation; genetics; hybridization; metabolism; phenotype; phylogeny; pigmentation; veterinary; Zambia; Animals; Cichlids; DNA, Mitochondrial; Fish Proteins; Genetic Variation; Hybridization, Genetic; Phenotype; Phylogeny; Pigmentation; Sequence Analysis, DNA; Zambia
语种	英语
scopus关键词	Cichlidae; Tropheus; Tropheus moorii; fish protein; mitochondrial DNA; animal; cichlid; DNA sequence; genetic variation; genetics; hybridization; metabolism; phenotype; phylogeny; pigmentation; veterinary; Zambia; Animals; Cichlids; DNA, Mitochondrial; Fish Proteins; Genetic Variation; Hybridization, Genetic; Phenotype; Phylogeny; Pigmentation; Sequence Analysis, DNA; Zambia
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118390
作者单位	Institute of Zoology, University of Graz, Universitätsplatz 2, Graz, 8010, Austria; Institute of Chemistry – Analytical Chemistry, University of Graz, Universitätsplatz 1, Graz, 8010, Austria
推荐引用方式 GB/T 7714	Sefc K.M.,Mattersdorfer K.,Ziegelbecker A.,et al. Shifting barriers and phenotypic diversification by hybridisation[J],2017,20(5).
APA	Sefc K.M..,Mattersdorfer K..,Ziegelbecker A..,Neuhüttler N..,Steiner O..,...&Koblmüller S..(2017).Shifting barriers and phenotypic diversification by hybridisation.Ecology Letters,20(5).
MLA	Sefc K.M.,et al."Shifting barriers and phenotypic diversification by hybridisation".Ecology Letters 20.5(2017).