Growth genes are implicated in the evolutionary divergence of sympatric piscivorous and insectivorous rainbow trout (Oncorhynchus mykiss)

Jared Grummer, Michael Whitlock, Patricia Schulte & Eric Taylor
Identifying ecologically significant phenotypic traits and the genomic mechanisms that underly them are crucial steps in understanding the traits associated with population divergence. We used genome-wide data to identify genomic regions associated with a key trait that distinguishes two ecotypes of rainbow trout (Oncorhynchus mykiss) – insectivores and piscivores – that coexist in Kootenay Lake, southeastern British Columbia, for the non-breeding portion of the year. "Gerrards" are large-bodied (breeding maturity at >60cm) piscivores that spawn...
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