Mechanism of hybridization between bream Abramis brama and roach Rutilus rutilus in their native range

Authors

  • A. Kuparinen,

    Corresponding author
    1. Ecological Genetics Research Unit, Department of Biosciences, P.O. Box 65, FI-00014 University of Helsinki, Finland
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    • Current address: Department of Environmental Sciences, P.O. Box 65, FI-00014 University of Helsinki, Finland; Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall TR10 9EZ, U.K.

  • M. Vinni,

    1. Department of Environmental Sciences, P.O. Box 65, FI-00014 University of Helsinki, Finland
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  • A. G. F. Teacher,

    1. Department of Biosciences, P.O. Box 65, FI-00014 University of Helsinki, Finland
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  • K. Kähkönen,

    1. Ecological Genetics Research Unit, Department of Biosciences, P.O. Box 65, FI-00014 University of Helsinki, Finland
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  • J. Merilä

    1. Ecological Genetics Research Unit, Department of Biosciences, P.O. Box 65, FI-00014 University of Helsinki, Finland
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Abstract

Mechanisms of hybridization between bream Abramis brama and roach Rutilus rutilus were studied within the native range of the species in a lake in southern Finland. Through the genetic analysis of A. brama, R. rutilus and putative hybrids, hybridization is shown to have occurred between female A. brama and male R. rutilus. These results match with previous findings from introduced habitats, suggesting that mating between female A. brama and male R. rutilus is the predominant mechanism through which the two species hybridize.

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