Hermaphroditic sex allocation evolves when mating opportunities change.
The optimal deployment of reproductive resources by hermaphrodites to male versus female function (i.e., their sex allocation) depends directly on opportunities for mating. If hermaphrodites occur among females, selection should favor those with a male-biased allocation because increased male allocation enhances siring success when eggs are abundant. Similarly, when hermaphrodites co-occur with males, selection should favor those that bias their allocation toward their female function. We tes...Expand abstract
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