Julie Rivard » People

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Julie Rivard MSc student

My research focuses on a sympatric pair of landlocked Rainbow Smelt (Osmerus mordax) in Lochaber Lake, Nova Scotia.  Both morphs (small bodied and large bodied smelt) spawn in the same two streams at overlapping times, but continue to appear to act as two different species.  Previous research shows that the populations are genetically distinguishable, however, the genetic divergence is small enough to suggest that hybridization between the morphs potentially occurs to some degree.   I am using microsatellite data collected from smelt larvae to test whether hybridization between the morphs occurs, and if so, whether the hybrids are selected against by disruptive selection.

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