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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Divergent selection and phenotypic plasticity during incipient speciation in Lake Victoria cichlid fish
Journal of Evolutionary Biology, Volume 22, No. 2, Year 2009
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Description
Divergent selection acting on several different traits that cause multidimensional shifts are supposed to promote speciation, but the outcome of this process is highly dependent on the balance between the strength of selection vs. gene flow. Here, we studied a pair of sister species of Lake Victoria cichlids at a location where they hybridize and tested the hypothesis that divergent selection acting on several traits can maintain phenotypic differentiation despite gene flow. To explore the possible role of selection we tested for correlations between phenotypes and environment and compared phenotypic divergence (PST) with that based on neutral markers (FST). We found indications for disruptive selection acting on male breeding colour and divergent selection acting on several morphological traits. By performing common garden experiments we also separated the environmental and heritable components of divergence and found evidence for phenotypic plasticity in some morphological traits contributing to species differences. © 2008 The Authors.
Authors & Co-Authors
Magalhaes, Isabel Santos
Switzerland, Bern
University of Bern
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Mwaiko, Salome
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Tanzania, Dar es Salaam
Tanzania Fisheries Research Institute Tafiri
Schneider, Maria Victoria
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
United Kingdom, Hinxton
Embl’s European Bioinformatics Institute
Seehausen, Ole
Switzerland, Bern
University of Bern
Switzerland, Dubendorf
Eawag - Swiss Federal Institute of Aquatic Science and Technology
Statistics
Citations: 50
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1111/j.1420-9101.2008.01637.x
ISSN:
1010061X
e-ISSN:
14209101
Research Areas
Genetics And Genomics
Participants Gender
Male