The sex life of hermaphroditic animals is determined by one fundamental question: Who assumes the female role and produces the costly eggs? Hamlets avoid this dilemma by engaging in reciprocal egg trading. Scientists have now used microeconomic models to analyze the circumstances required for this complex system of trading to work. Their results have been published in The American Naturalist.
Click here for original story, Egg trading between hermaphroditic fish: Why would you give when you can just take?
Source: Phys.org