title: Multiple mating and sperm displacement in a natural population of Drosophila melanogaster.
abstract: Mother-offspring data for alcohol dehydrogenase genotypes of a vineyard cellar population of D. melanogaster are best explained by a model that allows 21% of females in the population to mate twice with an 83% level of sperm displacement. A population model with multiple mating and sperm displacement is examined theoretically. A formula for the effective population size is derived under this model. Multiple mating increases the effective population size relative to single mating.
authors.affiliation: Mathematics Department, Monash University, Clayton, Victoria, Australia.
authors.forename: R C
authors.initials: RC
authors.lastname: Griffiths
authors.forename: S W
authors.initials: SW
authors.lastname: McKechnie
authors.forename: J A
authors.initials: JA
authors.lastname: McKenzie