Sperm Competitive Ability in Drosophila melanogaster Associated With Variation in Male Reproductive Proteins
نویسندگان
چکیده
منابع مشابه
Sperm competitive ability in Drosophila melanogaster associated with variation in male reproductive proteins.
Multiple mating by females establishes the opportunity for postcopulatory sexual selection favoring males whose sperm is preferentially employed in fertilizations. Here we use natural variation in a wild population of Drosophila melanogaster to investigate the genetic basis of sperm competitive ability. Approximately 101 chromosome 2 substitution lines were scored for components of sperm compet...
متن کاملAssociations between Variation in X Chromosome Male Reproductive Genes and Sperm Competitive Ability in Drosophila melanogaster
Variation in reproductive success has long been thought to be mediated in part by genes encoding seminal proteins. Here we explore the effect on male reproductive phenotypes of X-linked polymorphisms, a chromosome that is depauperate in genes encoding seminal proteins. Using 57 X chromosome substitution lines, sperm competition was tested both when the males from the wild-extracted line were th...
متن کاملNatural genetic variation in male reproductive genes contributes to nontransitivity of sperm competitive ability in Drosophila melanogaster.
Female Drosophila melanogaster frequently mate with multiple males, and the success of a given male depends not only on his genotype but also on the genotype of his competitor. Here, we assess how natural genetic variation affects male-male interactions for traits influencing pre- and postcopulatory sexual selection. Males from a set of 66 chromosome substitution lines were competed against eac...
متن کاملMale-mating Ability in Drosophila Melanogaster
The effect of full-sib inbreeding on competitive male-mating ability (CI8) in Drosophila melanogaster was investigated in two experiments. In the first, five inbred lines (with reserves) were assessed up to 18 generations. Linear inbreeding depression, of 5.9% per 10% increase in homozygosity, was observed. In a second experiment, 21 inbred lines were tested after three generations of full-sib ...
متن کاملSperm competitive ability and genetic relatedness in Drosophila melanogaster: similarity breeds contempt.
Offspring of close relatives often suffer severe fitness consequences. Previous studies have demonstrated that females, when given a choice, will choose to avoid mating with closely related males. But where opportunities for mate choice are limited or kin recognition is absent, precopulatory mechanisms may not work. In this case, either sex could reduce the risks of inbreeding through mechanism...
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ژورنال
عنوان ژورنال: Genetics
سال: 2005
ISSN: 1943-2631
DOI: 10.1534/genetics.104.032870