Evolutionary Ecology and Conservation Biology of Fishes

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My research focuses on the tremendous variability in reproductive strategies within and among natural populations. Such life history variation can be reflected by individual differences in age & size at maturity, number of eggs per female, and offspring size. To what extent is the source of this variability genetic, environmental, or some combination thereof? This is a fundamental question to evolutionary ecology and conservation biology. Firstly, the source of variation determines whether life history responses to environmental perturbations, such as habitat alteration and harvesting, will be rapid, slow, or indeed whether they will occur at all. Secondly, the nature of the life history response, i.e., the change in reproductive strategy produced by the environmental change, can affect a population's ability to recover from collapse, persist through time, and sustain exploitation.