Fine-scale genital morphology affects male ejaculation success: an experimental test
نویسندگان
چکیده
منابع مشابه
Influence of body and genital morphology on relative male fertilization success in oriental beetle
Although the frequently large variance in relative male fertilization success when females are mated by more than 1 male has been appreciated for some time, the factors that influence relative paternity are still poorly understood. Recently, experimental evidence that morphology of male genitalia influences fertilization success has been documented in 2 water striders, a dung beetle, and a leaf...
متن کاملMale Genital Morphology and Its Influence on Female Mating Preferences and Paternity Success in Guppies
In internally fertilizing species male genitalia often show a higher degree of elaboration than required for simply transferring sperm to females. Among the hypotheses proposed to explain such diversity, sexual selection has received the most empirical support, with studies revealing that genital morphology can be targeted by both pre-and postcopulatory sexual selection. Until now, most studies...
متن کاملGenital morphology and fertilization success in the dung beetle Onthophagus taurus: an example of sexually selected male genitalia.
In animals with internal fertilization and promiscuous mating, male genitalia show rapid and divergent evolution. Three hypotheses have been suggested to explain the evolutionary processes responsible for genital evolution: the lock-and-key hypothesis, the pleiotropy hypothesis and the sexual-selection hypothesis. Here, we determine whether variation in male genital morphology influences fertil...
متن کاملEffects of fine-scale genetic structure on male mating success in gynodioecious Beta vulgaris ssp. maritima.
Plant mating systems are known to influence population genetic structure because pollen and seed dispersal are often spatially restricted. However, the reciprocal outcomes of population structure on the dynamics of polymorphic mating systems have received little attention. In gynodioecious sea beet (Beta vulgaris ssp. maritima), three sexual types co-occur: females carrying a cytoplasmic male s...
متن کاملCoevolution of Male and Female Genital Morphology in Waterfowl
Most birds have simple genitalia; males lack external genitalia and females have simple vaginas. However, male waterfowl have a phallus whose length (1.5->40 cm) and morphological elaborations vary among species and are positively correlated with the frequency of forced extra-pair copulations among waterfowl species. Here we report morphological complexity in female genital morphology in waterf...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2020
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2020.0251