Abstract
Although modern sex roles acknowledge the fact that males and females both compete for and chose mates, there are sound theoretical reasons for expecting massive sex differences in these behavioural domains. Because of the resulting sex bias in the empirical evidence, this overview of the mechanisms and consequences of intrasexual selection focuses on male reproductive strategies. All traits that increase the probability of obtaining mating opportunities, even minimally, are positively evaluated by intrasexual selection. Sexually-selected adaptations are found in very different traits, but behaviour plays a prominent role in implementing many of them. The presentation of these adaptations follows the logical chronological sequence of events by distinguishing between pre- and post-copulatory competition. The basic concept of a strategy, which applies to both sexes, is presented before this discussion for a better appreciation of sex-specific adaptations within the context of reproduction.
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Kappeler, P.M. (2021). Intrasexual Selection: How Males Compete. In: Animal Behaviour. Springer, Cham. https://doi.org/10.1007/978-3-030-82879-0_9
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