title: Female remating in Drosophila ananassae: evidence for sperm displacement and greater productivity after remating
creator: Singh, Shree Ram
subject: Evolution
description: ABSTRACT—In Drosophila ananassae, female remating with respect to productivity and sperm displace-ment was studied by employing different mutant strains and a wild type strain. In all the experiments, the continuous confinement technique was used. The comparison of productivity between once-mated (control) and remated females reveals that the productivity of remated females is significantly higher than that of once-mated ones in all the crosses. The P2´ values (the proportion of second male progeny produced after remating) were calculated to test sperm displacement in each cross of remated females. In all the crosses, high P2´ values (0.91–0.94) were found which indicate sperm precedence of second male to mate suggest-ing the existence of sperm displacement in D. ananassae. Furthermore, female productivity is increased after remating in D. ananassae.
date: 2001-03
type: Preprint
type: PeerReviewed
format: application/pdf
identifier: http://cogprints.org/1948/3/Sperm_displacement_ZS.pdf
identifier:   Singh, Shree Ram  (2001) Female remating in Drosophila ananassae: evidence for sperm displacement and greater productivity after remating.  [Preprint]     
relation: http://cogprints.org/1948/