Female remating in Drosophila ananassae: shorter duration of copulation during second mating as compared to first mating

Drosophila ananassae, a cosmopolitan and domestic species, belongs to the ananassae subgroup of the melanogaster species group. Female remating was observed in ten mass culture stocks of this species, which were initiated from flies collected from different geographic localities. The frequency of female remating ranges from 24% to 56% in different strains. Strains show significant variation in remating latency (days). Significant variation has also been found in all the stocks for duration of copulation between first and second matings. The duration of copulation is shorter in second mating as compared to first mating in D. ananassae.