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  Inter-chromosomal coupling between vision and pigmentation genes during genomic divergence

Kosmas, H., Vargas, M., Hoeppner, M. P., McMillan, W. O., & Puebla, O. (2019). Inter-chromosomal coupling between vision and pigmentation genes during genomic divergence. NATURE ECOLOGY & EVOLUTION, 3(4), 657-667. doi:10.1038/s41559-019-0814-5.

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 Creators:
Kosmas, Hench1, Author              
Vargas, Marta1, Author
Hoeppner, Marc P.1, Author
McMillan, W. Owen1, Author
Puebla, Oscar1, Author
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1external, ou_persistent22              

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Free keywords: NEURAL CREST; REPRODUCTIVE ISOLATION; READ ALIGNMENT; COLOR MORPHS; REEF FISH; HYPOPLECTRUS; SPECIATION; ISLANDS; LINKAGE; DIFFERENTIATIONEnvironmental Sciences & Ecology; Evolutionary Biology;
 Abstract: Recombination between loci underlying mate choice and ecological traits is a major evolutionary force acting against speciation with gene flow. The evolution of linkage disequilibrium between such loci is therefore a fundamental step in the origin of species. Here, we show that this process can take place in the absence of physical linkage in hamlets-a group of closely related reef fishes from the wider Caribbean that differ essentially in colour pattern and are reproductively isolated through strong visually-based assortative mating. Using full-genome analysis, we identify four narrow genomic intervals that are consistently differentiated among sympatric species in a backdrop of extremely low genomic divergence. These four intervals include genes involved in pigmentation (sox10), axial patterning (hoxc13a), photoreceptor development (casz1) and visual sensitivity (SWS and LWS opsins) that develop islands of long-distance and inter-chromosomal linkage disequilibrium as species diverge. The relatively simple genomic architecture of species differences facilitates the evolution of linkage disequilibrium in the presence of gene flow.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000462542100029
DOI: 10.1038/s41559-019-0814-5
 Degree: -

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Title: NATURE ECOLOGY & EVOLUTION
Source Genre: Journal
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Publ. Info: MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND : NATURE PUBLISHING GROUP
Pages: - Volume / Issue: 3 (4) Sequence Number: - Start / End Page: 657 - 667 Identifier: ISSN: 2397-334X