Quantifying the strength and form of sexual selection on men's traits
نویسندگان
چکیده
a Department of Anthropology, Pennsylvania State University, University Park, PA 16802 b Centre for Ecology and Conservation, School of Biosciences, University of Exeter, Penryn, UK c Department of Psychology, Oakland University, Rochester, MI 48309 d Department of Psychology, Pennsylvania State University, University Park, PA 16802 e Center for Brain, Behavior, and Cognition, Pennsylvania State University, University Park, PA 16802
منابع مشابه
Sexual selection on human faces and voices.
Humans are highly sexually dimorphic primates, and some of the most conspicuous human sex differences occur in the face and voice. Consequently, this article utilizes research findings on human faces and voices to illustrate how human sex differences may have arisen by sexual selection (i.e., the type of natural selection favoring traits that increase mating opportunities). Evidence suggesting ...
متن کاملBeauty and the beast: mechanisms of sexual selection in humans
Literature in evolutionary psychology suggests that mate choice has been the primary mechanism of sexual selection in humans, but this conclusion conforms neither to theoretical predictions nor available evidence. Contests override other mechanisms of sexual selection; that is, when individuals can exclude their competitors by force or threat of force, mate choice, sperm competition, and other ...
متن کاملTemporal variation in selection on male and female traits in wild tree crickets
Understanding temporal variation in selection in natural populations is necessary to accurately estimate rates of divergence and macroevolutionary processes. Temporal variation in the strength and direction of selection on sex-specific traits can also explain stasis in male and female phenotype and sexual dimorphism. I investigated changes in strength and form of viability selection (via predat...
متن کاملThe form of sexual selection arising from male-male competition depends on the presence of females in the social environment.
Sexual selection arises from social interactions, and if social environments vary so too should sexual selection. For example, male-male competition often occurs either in the presence or in the absence of females, and such changes in the social environment could affect the form and strength of sexual selection. Here we examine how the presence of a female influences selection arising from male...
متن کاملEvolution of male life histories and age-dependent sexual signals under female choice
Sexual selection theory models evolution of sexual signals and preferences using simple life histories. However, life-history models predict that males benefit from increasing sexual investment approaching old age, producing age-dependent sexual traits. Age-dependent traits require time and energy to grow, and will not fully mature before individuals enter mating competition. Early evolutionary...
متن کامل