Please take this quick survey to tell us about what happens after you publish a paper. Behavioral Ecology and Sociobiology. Five hypotheses have been proposed to explain polygyny in the red-winged blackbird Agelaius phoeniceus.
The sexy son hypothesis of evolutionary biology was first proposed by Patrick J. Weatherhead and Raleigh J. Robertson of Queen's University in
New research from Oakland University reveals that psychologists might be able to predict what kind of man a woman is more likely to achieve an orgasm with. It is the type that women rate as being found more attractive by other women. The study argues that women want to have sons who are also eventually found more desirable by the opposite sex.
The sexy son hypothesis in evolutionary biology and sexual selection —proposed by Ronald Fisher in —states that a female's ideal mate choice among potential mates is one whose genes will produce male offspring with the best chance of reproductive success. This also implies that a potential mate's capacity as a parental caregiver or any other direct benefits the father can offer the mother, such as nuptial gifts or good territoryare irrelevant to his value as the potential father of the female's offspring. Fisher's principle means that the sex ratio except in certain eusocial insects is always between males and females, yet what matters most are her "sexy sons'" future breeding successes, more likely if they have a promiscuous father, in creating large numbers of offspring carrying copies of her genes. Female mating preferences are widely recognized as being responsible for the rapid and divergent evolution of male secondary sex characteristics.
In polygynous mating systems, the female preference of apparently useless or deleterious male characteristics can be understood if a correlation between preferred male characteristics and direct benefits for the female exists see polygyny threshold model, e. This issue is particularly interesting in facultative polygynous mating systems with biparental care because the female's choice of a polygynous male as a mate is most often accompanied by a reduction in paternal care by this mate for a review, see Ligon Several studies e.
Skip to search form Skip to main content. In polygynous mating systems, the female preference of apparently useless or deleterious male characteristics can be understood if a correlation between preferred male characteristics and direct benefits for the female exists see polygyny threshold model, e. View PDF.
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Here's how to inoculate ourselves against negative ones. Verified by Psychology Today. Slightly Blighty. A team of psychologists from Oakland University in the United States have just published new research which reveals that psychologists might be able to predict what kind of man a woman is more likely to achieve an orgasm with.
Darwin went onto greatly develop the theory of sexual selection in his massive tome The Descent of Man, and Selection in Relation to Sex. An early champion of this theory was R. According to this idea, females will be favoured to preferentially mate with males who exhibit conspicuous ornamentation if other females already happen to find this ornamentation attractive because, by mating with ornamented males, females will be more likely to have ornamented sons, who will be more attractive to potential mating partners.