Effects of White Kwao Khruea Extracts on the Reproduction of House Fly (<I>Musca domestica</I> L.)

Abstract

The effects of White Kwao Khruea (Pueraria candollei Grah. ex. Benth. var. mirifica (Airy Shaw et Suvatabandhu) Niyomdham) extracts on the reproduction of the house fly (Musca domestica L.) were investigated. The study was made by extracting dried powder from White Kwao Khruea tubers with 95% ethyl alcohol.  The tests of White Kwao Khruea extracts on larvae and adult house flies were done by dipping and topical methods, respectively. The results showed that all concentrations of White Kwao Khruea extracts were not toxic to larvae and adults.  White Kwao Khruea extract was fed at doses of 0.1, 1, 5, 10, 15 and 20% mixed with larvae food. The percentage of surviving larvae increased concurrently with White Kwao Khruea extracts concentration. Adult eclosion was 84.15 ± 3.36, 75.56 ± 1.62, 82.72 ± 6.90, 82.97 ± 4.34,    88.82 ± 2.54 and 89.98 ± 3.43%, respectively. Adult house flies were reared in mixed doses of   White Kwao Khruea extracts and were examined for fecundity at a ratio of male and female 1 : 1. The results showed that the number of house fly eggs per female on the first day of laying egg was highest in 10% dose. Total number of eggs per female, the percentage of hatching eggs, the percentage of surviving larvae and the percentage of emerging  adults were non-significant among experimental groups.