A test for the rare male mating advantage in coisogenic strains of Drosophila melanogaster

Abstract

SUMMARY: Experiments were carried out to see if rare male mating advantage could be detected when males differ at only one locus. The eye colour mutant sepia was inserted into a strain of Drosophila melanogaster homozygous for a first, second, and third chromosome from the Canton-S strain. Tests for the rare male advantage were conducted using ratios of 4:1, 1:1, and 1:4 of the coisogenic wild-type and sepia males. No deviations from expected types of matings were observed. The results are discussed with respect to possible conditions necessary for the rare male effect to occur.