Autor(es): Kim, Min-Sik; Lan, Que

Resumo: alpha-Mangostin, a major xanthone derivative in mangosteen (Garcinia mangostana), has been proven to have a wide range of biological-activities. In this study, we assessed the larvicidal and antifeeding activities of alpha-mangostin using larvae and adults of the Colorado potato beetle, Leptinotarsa decemlineata Say. alpha-Mangostin showed larvicidal activity and growth inhibitory effects under non-choice feeding conditions. The LC50 values with 7-, 14- and 23-day treatment were 63.66 (13.29-279.79) mu M, 8.37 (2.67-20.27) mu M and 4.09 (0.89-11.81) mu M, respectively. Larval development was significantly delayed 3-8 days with alpha-mangostin treatment. The antifeeding activity of alpha-mangostin was also tested by leaf disc non-choice and choice methods against larvae and adults of L. decemlineata. alpha-Mangostin had stronger antifeeding-activity toward adults than toward larvae, whereas there was low lethality in adults associated with higher antifeeding indexes (AFIs). The larvicidal and antifeeding effects suggest that alpha-mangostin and related compounds should be explored for their potential as botanical insecticide alternatives for control of the Colorado potato beetle. (C) Pesticide Science Society of Japan

Palavras-Chave: Cholesterol; Insecticide; Larvicide; Colorado Potato Beetle; Sterol Carrier Protein-2 (SCP-2)

Imprenta: Journal of Pesticide Science, v. 36, n. 3, p. 370-375, 2011

Identificador do objeto digital: 10.1584/jpestics.G11-09

Descritores: Aedes aegypti - Larvicide

Data de publicação: 2011

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