Abstracts (first author)

Poster 

Genetics of parallel phenotypic evolution in ninespine sticklebacks (Pungitius pungitius) – a comparative genomic approach

Author(s): Eberlein C, Guo B, Shikano T, Merilä J

Summary:

Uncovering the genetic architecture of local adaptations is a central topic in contemporary evolutionary biology. Parallel phenotypic and physiological differentiation in independent populations provides strong evidence for evolution by natural selection. Pond populations of Fennoscandian ninespine sticklebacks, subject to strong genetic drift show parallel phenotypic divergence from their marine conspecifics in several traits (e.g. growth, behavior, body shape) apparently as a result of adaptation to reduced predation-risk. We are investigating genetic mechanisms underlying this parallel phenotypic evolution with the aid of genomic approaches utilizing F2-intercrosses between pond populations and a marine population. One of the main aims is to clarify whether the same (parallel evolution) or different (convergent evolution) genes and genomic regions are responsible for the repeated evolution of pond phenotypes. Targeting this, a high density linkage map based on SNP-markers has been constructed to identify genomic regions responsible for the phenotypic divergence among pond and marine populations. This also opens opportunities for comparative genomic studies among nine- and threespine sticklebacks. In future, linkage and QTL mapping for multiple crosses will give the first insights into genomic regions responsible for parallel phenotypic evolution in ninespine sticklebacks.



Contacts

Chairman: Octávio S. Paulo
Tel: 00 351 217500614 direct
Tel: 00 351 217500000 ext22359
Fax: 00 351 217500028
email: mail@eseb2013.com

Address

XIV Congress of the European Society for Evolutionary Biology

Organization Team
Department of Animal Biology (DBA)
Faculty of Sciences of the University of Lisbon
P-1749-016 Lisbon
Portugal

Website

Computational Biology & Population Genomics Group 
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