| The best evidence so far for parasite-mediated sexual selection has been found in the barn swallow, Hirundo rustica. |
|
| We studied sexual selection in the red bishop, a sexually dimorphic and polygynous weaverbird from Southern Africa. |
|
| For many flying animals, natural and sexual selection likely work in concert to promote enhanced maneuverability. |
|
| Extrapair paternity is widespread within passerine birds and is indicative of sexual selection. |
|
| The fact that phenotypic differentiation is most pronounced in male secondary sexual ornaments suggests a primary role for sexual selection. |
|
| Such simultaneous sampling may be common in lekking and chorusing species, which have been the subjects of many studies of sexual selection. |
|
| Importantly, sexual selection favors apterous males in several natural populations of a water strider species. |
|
| Thus the expectations regarding the strength of sexual selection for polygyny, polyandry, and monogamy are fairly simple. |
|
| The focus of recent studies has been the explicit integration of an organismal perspective into sexual selection studies. |
|
| We describe an experimental study of the effect of tail-length on sexual selection in Cape sugarbirds and orange-breasted sunbirds. |
|
| He gave us the first quantitative theories of sexual selection, mimicry, polymorphism, evolution of recombination rates, and supergenes. |
|
| The barn swallow has figured largely in studies of sexual selection and exaggerated traits. |
|
| According to the researchers, females' preferences entail a sexual selection dynamic that is almost certainly present in other species too. |
|
| Behavioural ecology, ecological genetics, evolution, sexual selection, vertebrates. |
|
| The central aim of our study was to demonstrate that both natural and sexual selection have been important in shaping the tail streamer of the barn swallow. |
|
| Similarly, in polygamous societies, the operation of sexual selection would have increased the differential advantage of the most viable in finding mates and having progeny. |
|
| A large portion of the first volume was devoted to the working of natural and sexual selection as an explanation of the origin of human beings by natural means. |
|
| Nepotistic exchange is regulated by evolutionary mechanisms such as kin selection and sexual selection, while mercantile exchange is purely human. |
|
| Male swordtails in the genus Xiphophorus display a conspicuous ventral elongation of the caudal fin, the sword, which arose through sexual selection due to female preference. |
|
| There is even the prospect that the human intellect might be a by-product of sexual selection, comparable to the peacock's flamboyant tail feathers. |
|
|
|
| Such research may benefit from application of theory and experimental paradigms that have been developed within the areas of mate choice and sexual selection. |
|
| For females sexual selection is weaker as they cannot increase their number of offspring by outcompeting other females. |
|
| Larger heads in males may be the result of sexual selection, as males with larger heads may exhibit greater success in intrasexual encounters. |
|
| Another popular theory involved sexual selection. |
|
| So Darwin wrote about a second force in evolution, which he called sexual selection. |
|
| Fluctuating asymmetry and sexual selection in the dark-winged damselfly Calopteryx maculata. |
|
| There is still some debate over the extent to which sexual selection is possible in hermaphroditic species. |
|
| There is an excellent example of honest signal in sexual selection, and that is the example of the spotted bowerbird bowers. |
|
| Nevertheless, it does appear that many of the processes of mate choice and sexual selection described for bird and mammal leks also apply to anuran choruses. |
|
| The legacy of this sexual selection process is still with us today, with the majority of women saying that they prefer smooth chests over body rugs. |
|
| American Redstarts are sexually dichromatic and yearling males exhibit delayed plumage maturation, suggesting strong sexual selection on plumage coloration. |
|
