Effect of monoterpenoids on oviposition and mortality of Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) under hermetic conditions
DOI: 10.1016/j.jspr.2013.02.001
Title: Effect of monoterpenoids on oviposition and mortality of Callosobruchus maculatus (F.) (Coleoptera: Bruchidae) under hermetic conditions
Journal Title: Journal of Stored Products Research
Volume: 53
Publication Date: April 2013
Start Page: 43
End Page: 47
Published online: online 15 March 2013
ISSN: 0022-474X
Affiliations:

  • a Department of Biology, Fort Valley State University, 1005 State University Drive, Fort Valley, GA 31030, USA

  • b Department of Statistics, Oklahoma State University, Stillwater, OK 74078, USA
  • Abstract: eniods have been shown to cause mortality in certain stored-product insect pests. The current report investigated the prospects of using monoterpenoids as oviposition deterrents of the cowpea beetle, Callosobruchus maculatus (Fabricius), as well as in the management of populations of the beetle. The monoterpenoids investigated include E-anethole, estragole, S-carvone, linalool, L-fenchone, geraniol, γ-terpinene and DL-camphor, and at the concentrations of 66.7, 33.3, 16.7, 8.33 and 0μL/L. Exposure of the life stages of the beetle, which included eggs, young larvae (first instar), 4th instar, pupae and adults to different concentrations of the monoterpenoids over 24h period caused varying levels of mortality. The stages of the beetle that were the least susceptible to the monoterpenoids were the 4th instar, and the pupae, which required high concentrations of the monoterpenoids to achieve 99% mortality. The adults and the eggs exhibited the highest susceptibility to the monoterpenoids. Mated C.maculatus females that were offered cowpea seeds upon treatment with low doses (8.33μL/L) of the monoterpenoids did not lay eggs, while control female beetles offered untreated seeds laid several eggs. However, mated C.maculatus females laid eggs on cowpea seeds treated with monoterpenoids 3 weeks before to the day of experimentation. The monoterpenoids did not exhibit residual toxicity to the cowpea beetles. These monoterpenoids could be further investigated for the postharvest management of seed beetles of grain legumes.
    Accepted: 5 February 2013
    Tel: +1 478 825 6550
    Email: gn1185mbata@aol.com mbatag@fvsu.edu

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