3 Works

Data from: AFLP genome scans suggest divergent selection on colour patterning in allopatric colour morphs of a cichlid fish

Karin Mattersdorfer, Stephan Koblmüller & Kristina M. Sefc
Genome scan-based tests for selection are directly applicable to natural populations to study the genetic and evolutionary mechanisms behind phenotypic differentiation. We conducted AFLP genome scans in three distinct geographic colour morphs of the cichlid fish Tropheus moorii to assess whether the extant, allopatric colour pattern differentiation can be explained by drift and to identify markers mapping to genomic regions possibly involved in colour patterning. The tested morphs occupy adjacent shore sections in southern Lake...

Data from: Brood mixing and reduced polyandry in a maternally mouthbrooding cichlid with elevated among-breeder relatedness

Kristina M. Sefc, Caroline M. Hermann, Barbara Taborsky & Stephan Koblmüller
Uniparental maternal brood care often coincides with multiple paternity and single maternity of broods, possibly reflecting benefits of polyandry and costs of uniparental care. Genetic data from the maternally mouthbrooding cichlid fish Simochromis pleurospilus revealed the opposite pattern – low polyandry and allomaternal care. More than 70% of the investigated females had mated with a single male, and 14% of the females had unrelated fry in their broods. Broods with foreign fry were in the...

Data from: Male courtship preferences demonstrate discrimination against allopatric colour morphs in a cichlid fish

Peter Zoppoth, Stephan Koblmüller & Kristina M. Sefc
Whether premating isolation is achieved by male-specific, female-specific or sex-independent assortative preferences often depends on the underlying evolutionary processes. Here we test mate preferences of males presented with females of different allopatric colour variants of the cichlid fish Tropheus, a Lake Tanganyika endemic with rich geographic colour pattern variation, in which the strength of sexual isolation varies between populations. We conducted two-way mate choice experiments to compare behaviour of males of a red-bodied morph (population...

Registration Year

  • 2012
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Resource Types

  • Dataset
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Affiliations

  • University of Graz
    3
  • University of Bern
    1