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25-May-2020 02:33

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Scientists study sexual selection in a species by measuring how successful males and females are at mating and reproducing.

Past studies have found that a female’s reproductive success mainly depends on there being enough resources available for her to produce eggs, while a male’s success depends on him getting access to these eggs.

Our results show that male sexual selection gradients are consistently positive.

However, an individual’s female mating success seems to negatively affect its own male reproductive success, an effect that only becomes visible several weeks into the experiment, highlighting that the time frame is crucial for the quantification and interpretation of sexual selection measures, an insight that applies to any iteroparous mating system.

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However, most research into sexual selection has been on species with separate sexes.