Adaptive maternal adjustments of offspring size in response to conspecific density in two populations of the least killifish, Heterandria formosa.


Given a trade-off between offspring size and number and an advantage to large size in competition, theory predicts that the offspring size that maximizes maternal fitness will vary with the level of competition that offspring experience. Where the strength of competition varies, selection should favor females that can adjust their offspring size to match… (More)


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