Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/13572
Title: Influence of mating histories and age on female remating behaviour in a few closely related species of <i>Drosophila nasuta</i> subgroup
Authors: Shruthi, B
Chayakumari
Ram, K Ravi
Ramesh, S R
Keywords: Copulation Duration
<i>Drosophila Nasuta</i> 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 <i>Drosophila nasuta</i> subgroup species with varying levels of reproductive isolation. The time taken for the once mated females to remate varied from 7 days in <i style="">D. s. sulfurigaster</i> to 19 days in <i style="">D. s. neonasuta</i> after first mating. The female remating frequency varied from a minimum of 29% in <i style="">D. s. neonasuta</i> to a maximum of 95% in <i style="">D. s. sulfurigaster</i>. 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 <i style="">nasuta</i> subgroup members. The results revealed that <i style="">D.</i> <i style="">nasuta</i> subgroup members despite being closely related differ in their reproductive behaviour.
Description: 156-163
URI: http://hdl.handle.net/123456789/13572
ISSN: 0975-1009 (Online); 0019-5189 (Print)
Appears in Collections:IJEB Vol.50(02) [February 2012]

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