Sexual Selection - Biology Encyclopedia forum. I make several predictions about the nature of intrasexual competition in females based on the availability of mates or mating resources and the potential direct and indirect benefits to be obtained via competition for mates. The Descent of Man, and Selection in Relation to Sex. 2010) and parent–offspring correlations (e.g., Maestripieri 2003) suggest a potential for high genetic variance and thus high heritability (Falconer 1989). A review of the naturally selected functions of female–female competition is vital to placing this behavior’s possible sexually selected functions into context; however, because female–female competition for nonmating resources is widely accepted, I will only briefly summarize competition that directly influences fecundity, survival, or offspring survival.

Evolution Even without complete reproductive suppression, this active competition may successfully delay reproduction in rivals by interrupting mating, delaying ovulation, or increasing stress (Wasser and Starling 1988; Hohmann and Fruth 2003). Besides common examples of combat and physical competition between males there is another example that is not as common but has an interesting story in relation to fitness.

Intrasexual selection and Intersexual selection occur in Polygamous condition of sexual selection. In his study "Mate Selection—A Thornhill, R., and J. Alcock.

has and will continue to further the study of sexual selection, Does host value influence female aggressiveness, contest outcome and fitness gain in parasitoids?

Part of Springer Nature. At one end of the spectrum of relative parental investment, with extensive female-only care, sexual selection appears to play a lesser role, with fecundity and mortality selection shaping female competition to protect offspring or acquire the food necessary for prolonged maternal care.

Indeed, temporal patterns of female aggression in birds and fish (i.e., species in which males often provide care) differ markedly from mammals (i.e., species with little to no male care).

2006). This third, more controversial possibility is the focus of this review. (1994). The male kills all of the infants in an attempt to bring all the females back into estrus since they will cease nursing young. Women’s preferences for male behavioral displays change across the menstrual cycle. These patterns reveal a key sex difference in sexual selection: Although females may compete for the number of mates, they appear to compete more so for access to high-quality mates that provide direct and indirect (genetic) benefits. This review uses female–female aggressive behavior as a model behavioral trait for understanding the evolutionary mechanisms promoting intrasexual competition, focusing especially on sexual selection. 1995). If females compete for high-quality males that provide parental care, female–female aggression should also be more intense when vying for a male whose phenotype suggests that he will be a high-quality male that will provide more care than other males. Natural Selection

Nesting sites can be a limiting resource for females of many species, independent of the OSR. Hyde, J. S. (1984). Intrasexual selection occurs when members of one sex compete among each other for access to potential mates. mate that inhibits courtship by subsequent males. Do female chacma baboons compete for a safe spatial position in a southern woodland habitat?

It is therefore especially important to identify the component of fitness affected by female–female competition for mating opportunities or mating resources. Replacement female house sparrows regularly commit infanticide: gaining time or signaling status? National Institutes of Health T32 postdoctoral fellowship “Common Themes in Reproductive Diversity” (T32HD049336). deoxyribonucleic acid (DNA) fingerprinting, microsatellite DNA typing, and A brief and accessible review of male–male competition. For permissions, please e-mail: journals.permissions@oup.com, Sequential organization of birdsong: relationships with individual quality and fitness, Vegetation structure drives mixed-species flock interaction strength and nuclear species roles.

Among humans, the particular nature of the competition... Over 10 million scientific documents at your fingertips. Environmental complexity during early life shapes average behavior in adulthood, Ecological and social drivers of neighbor recognition and the dear enemy effect in a poison frog, About the International Society for Behavioral Ecology, Receive exclusive offers and updates from Oxford Academic, Copyright © 2020 International Society of Behavioral Ecology.



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