Singh, Shree Ram (2001) Female remating in Drosophila ananassae: evidence for sperm displacement and greater productivity after remating. [Preprint]
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Abstract
ABSTRACTIn 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 (0.910.94) 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.
Item Type: | Preprint |
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Keywords: | female remating, sperm precedence, sperm displacement, sperm competition, sexual selection, productivity, Drosophila ananssae |
Subjects: | Biology > Evolution |
ID Code: | 1948 |
Deposited By: | Singh, Shree Ram |
Deposited On: | 01 Dec 2001 |
Last Modified: | 11 Mar 2011 08:54 |
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