sexual selection


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Related to sexual selection: natural selection

sex·u·al se·lec·tion

a form of natural selection in which, according to darwinian theory, the male or female is attracted by certain characteristics, form, color, behavior, etc., in the opposite sex; thus modifications of a special nature are brought about in the species.

sexual selection

n. Biology
The process in nature by which individuals with certain traits, especially secondary sex characteristics such as colorful plumage and large antlers, are chosen more often for mating and thus pass those traits on to their offspring.

sexual selection

the selection of mates on the basis of the attraction of or preference for certain traits, such as coloration or behavior patterns, so that eventually only those particular traits appear in succeeding generations. It explains the wide variety of sexual characteristics among the various species.

sex·u·al se·lec·tion

(sek'shū-ăl sĕ-lek'shŭn)
A form of natural selection in which, according to Darwin's theory, the male or female is attracted by certain characteristics, forms, colors, behaviors, and phenomena, in the opposite sex; thus, modifications of a special nature are brought about in the species.

sexual selection

the selection of a mate by female animals where, for example, the most brightly coloured is favoured, so maintaining brightly coloured males in a population. Some authorities consider that sexual selection explains the existence of SECONDARY SEXUAL CHARACTERS.
References in periodicals archive ?
Even without specifying the mechanisms of selection, not only are the results consistent with the hypothesized direct role of male-genitalic shape differences in reproductive isolation, but the study also provides evidence for a predominant role of sexual selection in the maintenance of species differences (because we are studying a character involved in reproductive interactions, sexual rather than natural selection is the focus of our conclusions; see Eberhard 1994).
In the sexual selection model based on the sensorial drive, natural selection would act on the issue, transmission and perception of the signs, considering the influence of environmental characteristics on the sensory system and communication (Endler & Basolo, 1998; Smith, Van Staaden, & Carleton, 2012a), or rather, changing the habitat would generate new selective pressures on the female preference.
When males and females differ in the potential costs of parental care, we expect sex differences in parental care to evolve (reviewed in Kokko and Jennions, 2012), which can, in turn, affect mating dynamics and sexual selection (Kokko and Jennions, 2008; Kokko and Jennions, 2012).
Despite the fact that broadcast spawning results in the simultaneous presence of gametes from multiple individuals, and thus the inevitable potential for sperm competition or sperm choice, we know comparatively little about how post-mating sexual selection affects reproductive traits in most species.
Indeed, while natural selection is blind, sexual selection has an eye for beauty -- although the nature of beauty is always in the eye of the beholder.
Sexual selection under parental choice: The role of parents in the evolution of human mating.
we can subject the handaxe to analysis as a SSEP by applying the tenets of sexual selection theory;
Sexual selection within mating swarms of the lovebug, Plecia nearctica (Diptera, Bibionidae).
You take a different approach to Darwinism and specifically to his theory of sexual selection, which you have challenged.
Sexual selection is assumed to be a driving force for language evolution by several authors (Miller, 2000), but Okanoya (2002) specifically pointed out that it is the syntactical domain rather than that of semantics in which sexual selection is strongly related with language, because sexual selection could help evolution of arbitrary complex traits (p.
The latest research and some unusual studies explores the role of disease in longevity, evolution, and the animal and insect as well as human worlds, using the author's on work on sexual selection processes to supplement intriguing stories from nature.
W]hen the males and females of any animal have the same general habits of life, but differ in structure, colour, or ornament, such differences have been mainly caused by sexual selection.