Larvicidal activity of endocarp and seed crude extracts of Dracaena loureiri Gagnep agains

Larvicidal activity of endocarp and seed crude extracts of Dracaena loureiri Gagnep against Aedes

aegypti(L.) mosquito

Damrongpan;Thongwat;Supaporn;Lamlertthon;Urat;Pimolsri;Nophawan;Bunchu;

【期刊名称】《亚太热带生物医学杂志：英文版》 【年(卷),期】2017(000)003

【摘要】Objective: To evaluate the larvicidal activity of the ethanolic and aqueous extracts of the endocarp and seeds of Dracaena loureiri(D. loureiri) against the dengue mosquito vector, Aedes aegypti.Methods: Bioassays were performed by exposing late third-stage to early fourth-stage larvae of Aedes aegypti to various concentrations of the extracts from D. loureiri. The larval mortality was observed after 24-and 48-h exposure.Results: The larvicidal bioassay in this study demonstrated that the ethanolic endocarp extract was the most effective with the LC50 value of 84.00 mg/L after 24 h exposure and< 50 mg/L after 48 h exposure. Extracts from the other parts of the plant were significantly less effective as a larvicide.Conclusions: The ethanolic endocarp extract of D. loureiri demonstrated effective larvicidal activity. It is an alternative source for developing a novel larvicide for controlling this mosquito species.

【总页数】5页(P.222-226) 【关键词】