Impact of Stress on Longevity: A Study in Two Races of Immigrans Species Subgroup of Drosophila


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Ramesh Babu Yarajarla, . and Harini, B.P. (2012) Impact of Stress on Longevity: A Study in Two Races of Immigrans Species Subgroup of Drosophila. World Journal of Zoology, 7 (3). pp. 251-257. ISSN 1817-3098


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Drosophila nasuta nasuta (2n = 8) and Drpsophila nasuta albomicans (2n = 6) are a pair of allopatric sibling species, belonging to the nasuta sub-group of the Drosophila immigrans species group. These two siblings are morphologically almost identical and are cross-fertile, but they differ with respect to their karyotypic composition. Hence, they are termed as chromosomal races. In the present study allopatric races of nasuta subgroup of Drosophila namely D. n. nasuta and D. n. albomicans were analyzed to record the performance of the impact of stress on longevity. The flies were subjected to various stressors like temperature, solvent fumes (ethanol and acetone fumes), desiccation, oxidation, as well as starvation. The report has revealed that females are more tolerant than males in both the races; flies exposed to starvation have shown significantly increased longevity in both the races. Interestingly, the derived race D. n. albomicans is significantly prone to be more resistant to variable stressors with increased longevity than ancestral race D. n. nasuta. Thus the derived race is more fit than ancestral race

Item Type: Article
Uncontrolled Keywords: Drosophila Nasuta Nasuta; Drosophila Nasuta Albomicans; S Tressors; Temperature; Longevity
Subjects: Faculty of Science > Environmental and Biological Sciences > Genetics
Divisions: Jnana Bharathi / Central College Campus > Centre for Applied Genetics
Depositing User: Mr. Narayanaswamy B V
Date Deposited: 29 Jun 2016 06:23
Last Modified: 29 Jun 2016 06:23

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