RRC ID 11563
Author Som A, Singh BN.
Title Evidence for minority male mating success and minority female mating disadvantage in Drosophila ananassae.
Journal Genet. Mol. Res.
Abstract Frequency-dependent mating success was tested for three pairs of wild-type and mutant strains of Drosophila ananassae, MY and yellow body color (y), PN and claret eye color (ca), and TIR and cut wing (ct). The two strains of each pair were chosen for their approximately equal mating propensities. Multiple-choice experiments, using different experimental procedures, were employed. The tests were carried out by direct observation in Elens-Wattiaux mating chambers with five different sex ratios (4:16, 8:12, 10:10, 12:8, and 16:4). There was no assortative mating and sexual isolation between the strains, based on 2 x 2 contingency chi2 analysis and isolation estimate values. One-sided rare male mating advantages were found in two experiments, one for ca males and the other for wild-type males (TIR). However, no advantage was found for rare males in the experiment with MY and y flies. Mating disadvantages for rare females were found for sex-linked mutants (y and ct). Two different observational methods (removal or direct observation of mating pairs) imparted no overall significant effects on the outcome of the frequency-dependent mating tests.
Volume 4(1)
Pages 1-17
Published 2005-3-31
PII 0069
PMID 15841431
MeSH Animals Drosophila / genetics Drosophila / physiology* Female Male Mutation Sex Factors Sexual Behavior, Animal / physiology*