Počet záznamů: 1  

Genetic linkage of distinct adaptive traits in sympatrically speciating crater lake cichlid fish

  1. 1.
    0471958 - BFÚ 2017 RIV GB eng J - Článek v odborném periodiku
    Fruciano, C. - Franchini, C. - Kováčová, Viera - Elmer, K.R. - Henning, F. - Meyer, A.
    Genetic linkage of distinct adaptive traits in sympatrically speciating crater lake cichlid fish.
    Nature Communications. Roč. 7, SEP2016 (2016), č. článku 12736. E-ISSN 2041-1723
    Grant CEP: GA ČR GA13-06264S
    Institucionální podpora: RVO:68081707
    Klíčová slova: rna-seq * ecological speciation * geometric morphometrics * morphological variation
    Kód oboru RIV: BO - Biofyzika
    Impakt faktor: 12.124, rok: 2016

    Our understanding of how biological diversity arises is limited, especially in the case of speciation in the face of gene flow. Here we investigate the genomic basis of adaptive traits, focusing on a sympatrically diverging species pair of crater lake cichlid fishes. We identify the main quantitative trait loci (QTL) for two eco-morphological traits: body shape and pharyngeal jaw morphology. These traits diverge in parallel between benthic and limnetic species in the repeated adaptive radiations of this and other fish lineages. Remarkably, a single chromosomal region contains the highest effect size QTL for both traits. Transcriptomic data show that the QTL regions contain genes putatively under selection. Independent population genomic data corroborate QTL regions as areas of high differentiation between the sympatric sister species. Our results provide empirical support for current theoretical models that emphasize the importance of genetic linkage and pleiotropy in facilitating rapid divergence in sympatry.
    Trvalý link: http://hdl.handle.net/11104/0269319

     
     
Počet záznamů: 1  

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