Last mated male sperm precedence in doubly mated females is not ubiquitous: evidence from sperm competition in laboratory populations of Drosophila nasuta nasuta and Drosophila nasuta albomicans

Abstract

Shruthi B. and Ramesh S. R. 2013 Last mated male sperm precedence in doubly mated females is not ubiquitous: evidence from sperm competition in laboratory populations of Drosophila nasuta nasuta and Drosophila nasuta albomicans J. Genet. 92, [309][310][311][312]

Sperm displacement in the Drosophila bipectinata species complex: Evidence for interspecific variations

“…Interestingly, it has been observed that the last male sperm precedence in doubly mated females is not ubiquitous. In the nasuta species subgroup, two species Drosophila nasuta nasuta (P2 is 0.34) and Drosophila nasuta albomicans (P2 is 0.29) show first male sperm precedence which has been explained by suggesting that selection has not favored remating (Shruthi and Ramesh, 2013). Therefore, we conclude that the three species of the bipectinata complex i.e., D. bipectinata, D. parabipectinata and D. malerkotliana show variations in the pattern of sperm displacement although the intensity of sperm competition is highest in D. bipectinata.…”