sexual selection

(redirected from Mate choice)
Also found in: Dictionary, Medical.
Related to Mate choice: assortative mating

sexual selection:

see selectionselection.
In Darwinism, the mechanism of natural selection is considered of major importance in the process of evolution. Popular formulations sometimes envisage a struggle for existence in which direct competition for mates or for various factors in the environment (e.g.
..... Click the link for more information.

Sexual Selection


the particular form of natural selection distinguished by the evolutionary development of secondary sex characteristics. These characteristics include the bright nuptial plumage of many birds, including ducks and grouse, the dances of insects, the mating calls of birds, the fighting of male birds and mammals, the varied sound signals of males used to attract females, and the odoriferous glands of insects and mammals used for attracting the opposite sex. Prominent characteristics, such as coloration, develop chiefly in males. Females, especially during the reproductive period, are usually protected by appropriate behavior, coloration, and form.

The primary basis for sexual selection was the divergence in the identifying characteristics of males and females, which probably facilitated inbreeding of the same species and prevented crossbreeding with other species. Subsequently, individuals with more pronounced sexual characteristics attracted the opposite sex more easily and had the advantage in reproduction.

The ethological or behavioral mechanisms of isolation are partially affected by sexual selection. The course of sexual selection sometimes conflicts with other trends of natural selection. Genotypes that are preserved make reproduction more successful but do not increase the viability of the species as a whole. However, this does not justify contrasting sexual selection with natural selection or considering it an independent factor in evolution. Sexual selection was first suggested by C. Darwin in 1859 and later substantiated in 1871.


Darwin, C. Proiskhozhdenie vidov putem estestvennogo otbora. In Soch, vol. 3. Moscow-Leningrad, 1939. (Translated from English.)
Darwin, C. Proiskhozhdenie cheloveka i polovoi otbor. In Soch., vol. 5. Moscow, 1953. (Translated from English.)
Shmal’gauzen, I. I. Problemy darvinizma, 2nd ed. Leningrad, 1969.


sexual selection

[¦seksh·ə·wəl si′lek·shən]
A special form of natural selection responsible for the evolution of traits that promote success in competition for mates.
References in periodicals archive ?
Sexual conflict and the energetic costs of mating and mate choice in water striders.
Sexual selection in earthworms: mate choice, sperm competition, differential allocation and partner manipulation.
This would be a significant finding because it would open up the possibility of there being information in the facial patterns of ladybirds, which could lead to new studies designed to investigate if those patterns are used in behaviors such as mate choice.
Mate choice in lekking Sage Grouse revisited: The roles of vocal display, female site fidelity and copying.
Our results show that female mate choice could have played a role in the evolution of the relatively large human male penis," the authors wrote.
On the dating scene, this region might be figuring out how similar a potential partner is to the observer, a calculation that's known to influence mate choice.
In addition, some studies have also assessed factor structure of mate preferences (Fletcher, Simpson, Thomas & Giles, 1999) as well as trade-offs and compromises in mate choice (Shackleford et al, 2005); and the effect of self-concept on mate choice (Kenrick, Groth, Trost & Sadalla, 1993).
Recently, I documented the first record of a bufflehead x common goldeneye hybrid, as well as the first record of inter-specific mate choice.
Male mate choice and female-female competition for mates in the pipefish Nerophis ophidion.
in front of conspecifics, so mate choice decisions and any other communicatory interactions between choosing individuals, their potential mates, and by-standing individuals are usually part of extensive communication networks (Matos & Schlupp 2005; McGregor & Peake 2000; Peake 2005; Earley & Dugatkin 2005).
There are many universal cues that human beings consider in their mate choice.