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The Role Of Reproductive Timing As A Driver Of Genetic Differentiation In Populations Of Pacific Herring, Eleni L. Petrou, Todd Sandell, Dayv Lowry, Lorenz Hauser

Salish Sea Ecosystem Conference

There is growing recognition that maintaining diversity in life history traits contributes to the sustainable management of wild populations. One important life history characteristic is reproductive phenology, and it has been shown that differences in the timing of reproduction can act as a barrier to gene flow between populations. If the difference in reproductive timing determines the level of connectivity, one would expect that genetic differentiation between populations would increase as a function of difference in reproductive date. This pattern, known as “isolation by time” (IBT), has been observed in wild populations of salmonids containing early and late runs. Pacific …