Male house mice that have evolved with sperm competition have increased mating duration and paternity success
نویسندگان
چکیده
0003-3472/$38.0
منابع مشابه
Function of copulatory plugs in house mice: Mating behavior and paternity outcomes of rival males
Polyandry is widespread across animal taxa, and subjects males to intense post-copulatory sexual selection which favors adaptations that enhance a male’s paternity success, either by decreasing the risk of sperm competition and/or by increasing the competitiveness of the ejaculate. Copulatory plugs deposited by males are thought to have evolved in the context of sperm competition. However, expe...
متن کاملSperm competition, alternative mating tactics and context-dependent fertilization success in the burying beetle, Nicrophorus vespilloides.
Fertilization success in sperm competition is often determined by laboratory estimates of the proportion of offspring sired by the first (P1) or second (P2) male that mates. However, inferences from such data about how sexual selection acts on male traits in nature may be misleading if fertilization success depends on the biological context in which it is measured. We used the sterile male tech...
متن کاملPolyandrous females benefit by producing sons that achieve high reproductive success in a competitive environment.
Females of many taxa often copulate with multiple males and incite sperm competition. On the premise that males of high genetic quality are more successful in sperm competition, it has been suggested that females may benefit from polyandry by accruing 'good genes' for their offspring. Laboratory studies have shown that multiple mating can increase female fitness through enhanced embryo viabilit...
متن کاملThe frequency of multiple paternity suggests that sperm competition is common in house mice (Mus domesticus).
Sexual selection is an important force driving the evolution of morphological and genetic traits. To determine the importance of male-male, postcopulatory sexual selection in natural populations of house mice, we estimated the frequency of multiple paternity, defined as the frequency with which a pregnant female carried a litter fertilized by more than one male. By genotyping eight microsatelli...
متن کاملPlastic responses of male Drosophila melanogaster to the level of sperm competition increase male reproductive fitness.
Evolutionary and plastic responses by males to the level of sperm competition (SC) are reported across widespread taxa, but direct tests of the consequences for male reproductive success in a competitive context are lacking. We varied male perception of SC to examine the effect on male competitive reproductive success and to test whether the outcomes were as predicted by theory. Exposure to riv...
متن کامل