Effect of Dietary Restriction on Survival, Longevity and Fecundity of Blowfly Chrysomya Chloropyga (Wied.) (Diptera: Calliphoridae)
Journal Title: IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS) - Year 2016, Vol 11, Issue 4
Abstract
Dietary Restriction (DR) was used to determined the survival, longevity, adult weights and fecundity of adult reared blowfly Chrysomya chloropyga.Twenty males and 20 females each were put in cages and exposed to continuous feeding (control) and 24, 48, 72 and 96 hr dietary restrictions periods. The flies were fed on a mixture of ground rice and fish paste for an hour after every restriction periods. Sugar and water were provided. Developments of the ovaries under various treatments were determined by dissecting females at day 18 of exposure. Protein contents of whole male and female from each of the treatments were also determined DR reduced the life span of the adult blowfly C. chloropyga. Maximum longevity of control male and female flies was 59 and 67 days; 44 and 45 days for 24 hr and 38 and 33 days for 96 hr restrictions respectively. Adult male and female weights decreased with increase in exposure and with age. There were no developed ovaries in females exposed to restricted diets hence no egg laying and mean fecundity in control females was 106.8±9.12 eggs.Protein concentrations in male decreased with age from 5-30 days and with exposure to dietary restriction but no pattern with female age except with exposure to dietary restriction. Protein content with age or with exposure to restricted diets was higher in females than in males. In conclusion, the study showed that dietary restriction in C. chloropyga did not prolong the lifespan of the blowfly species. The non-production of eggs in females exposed to restricted diets is probably due to insufficiency of proteins from the diet used in this study. A diet of blood source is recommended for a similar study.
Authors and Affiliations
K. Naman, W. A. Muse*
Keywords
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