Comparative effects of Cymbopogon schoenanthus essential oil and piperitone on Callosobruchus maculatus development.
The insecticidal activity of crude essential oil extracted from Cymbopogon schoenanthus and of its main constituent, piperitone, was assessed on different developmental stages of Callosobruchus maculatus. Piperitone was more toxic to adults with a LC(50) value of 1.6 microl/l vs. 2.7 microl/l obtained with the crude extract. Piperitone inhibited the development of newly laid eggs and of neonate larvae, but was less toxic than the crude extract to individuals developing inside the seeds.
Ketoh
Guillaume K
GK
Faculty of Sciences, University of Lome B.P. 1515 Lome, Togo. gketoh@ub.tg
Koumaglo
Honore K
HK
Glitho
Isabelle A
IA
Huignard
Jacques
J
D000818:Animals; D001517:Coleoptera / Q000254:growth & development / Q000502:physiology*; D000081005:Cyclohexane Monoterpenes; D031743:Cymbopogon; D004305:Dose-Response Relationship, Drug; D007306:Insecticides / Q000008:administration & dosage / Q000494:pharmacology*; D007814:Larva / Q000254:growth & development / Q000502:physiology; D007928:Lethal Dose 50; D039821:Monoterpenes / Q000008:administration & dosage / Q000494:pharmacology*; D010572:Pest Control, Biological; D008517:Phytotherapy; D010938:Plant Oils / Q000008:administration & dosage / Q000494:pharmacology*; D012639:Seeds
D000081005:Cyclohexane Monoterpenes; D007306:Insecticides; D039821:Monoterpenes; D010938:Plant Oils; C496656:piperitone