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Indian Journal of Experimental Biology (IJEB) >
IJEB Vol.50 [2012] >
IJEB Vol.50(02) [February 2012] >
| Title: | Influence of mating histories and age on female remating behaviour in a few closely related species of Drosophila nasuta subgroup |
| Authors: | Shruthi, B
Chayakumari
Ram, K Ravi
Ramesh, S R |
| Keywords: | Copulation Duration
Drosophila Nasuta Subgroup
Female Remating
Reproductive Isolation
Sexual Selection |
| Issue Date: | Feb-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Female remating with more than one male leads to coexistence of sperm from
different males in the same female, thus creating a selection pressure on
sperm. To understand the extent of divergence in the reproductive behaviour
among closely related species, in the present study, the influence of first
mating histories like mating latency, duration of copulation and age of flies have
been analysed on female remating behaviour in closely related Drosophila
nasuta subgroup species with varying levels of reproductive isolation. The
time taken for the once mated females to remate varied from 7 days in D. s. sulfurigaster to 19 days in D. s. neonasuta after first mating. The
female remating frequency varied from a minimum of 29% in D. s. neonasuta to a maximum of 95% in D. s. sulfurigaster. The younger flies, which had remating latency
of three times less than aged flies, show 100% remating frequency. In addition,
it was observed that the duration of copulation in the first mating influences
the remating behaviour among the nasuta
subgroup members. The results revealed that D.
nasuta subgroup members despite being
closely related differ in their reproductive behaviour. |
| Page(s): | 156-163 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1009 (Online); 0019-5189 (Print) |
| Source: | IJEB Vol.50(02) [February 2012]
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