Bwire, Patroba2026-03-112026-03-112017https://www.suaire.sua.ac.tz/handle/20.500.14820/7379Masters ThesesFrom this study we recommends that all solvent extract used in this study are potentially solvent extract for plant bio-toxicants especially dichoromethane, petroleum ether and methanol however water also do better but more study should be done on it and the selections should be based on the polarity and less harmful to human health and untargeted organisms.enFruit flies speciesDerris ellipticasolvent extractB. dorsalisB. cucurbitaeDose responseLethal dose (LD50)Normal Soaking Extract (NSE)MorogoroTanzaniaThesis