Temporal genetic differentiation: continuous v. discontinuous spawning runs in anadromous rainbow smelt Osmerus mordax (Mitchill)

Authors

  • M. W. Coulson,

    Corresponding author
    1. Marine Gene Probe Laboratory, Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, Nova Scotia, B3H 4J1, Canada
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  • I. R. Bradbury,

    1. Marine Gene Probe Laboratory, Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, Nova Scotia, B3H 4J1, Canada
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  • P. Bentzen

    1. Marine Gene Probe Laboratory, Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, Nova Scotia, B3H 4J1, Canada
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*Tel.: +1 902 494 1398; fax: +1 902 494 3736; email: mcoulson@dal.ca

Abstract

Genetic differentiation was greater between ‘early’ and ‘late’ spawning rainbow smelt Osmerus mordax separated by a hiatus in spawning activity compared to a continuously spawning population over a similar time period. This magnitude of temporal differentiation was comparable to that seen among spatially separated populations.

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