Loading...
Please wait, while we are loading the content...
Similar Documents
Monoterpenoids as Fumigants in the Management of Callosobruchus Maculatus (f.) (coleoptera: Bruchidae): Oviposition Deterrence and Mortality of Developmental
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mbata, George N. Smith, Dana McNeal, K. K. |
| Copyright Year | 2012 |
| Abstract | Monoterpeniods have been demonstrated to cause mortality in certain stored-product insect pests. The current report investigated the prospects of using monoterpenoids in the management of all stages of the cowpea beetle, Callosobruchus maculatus (Fabricius). Newly emerged males and females (36 - 48 h), that were observed mating were exposed to cowpea seeds treated with the following monoterpenoids; E-anethole, estragole, S- carvone, linalool, L-fenchone, geraniol, Ȗ-terpinene and DL-camphor at the following concentrations 66.7, 33.3, 16.7, 8.33 and 0 µL/L to determine the effect of the fumigants on egg laying. Treated C. maculatus females did not lay eggs even when exposed to sublethal doses of the monoterpenoids, while control adult beetles exposed to 0 µL/L laid several eggs. However, mated C. maculatus females laid eggs on cowpea seeds treated with monoterpenoids if the treated seeds were aerated for one week. The monoterpenoids did not exhibit residual toxicity to the cowpea beetles. Exposure of the developmental stages of the beetle, which include eggs, young larvae (first instar), 4 th instar, pupae and adults to different concentrations of the monoterpenoids over 24 h period generated varying levels of mortality. The developmental stages of the beetle that were most tolerant to the monoterpenoids were the 4 th instar, and the pupae. All the monoterpenoid evaluated were effective in causing mortality to the stages of C. maculatus. These monoterpenoids could be further investigated for the postharvest management of seed beetles of grain legumes. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://ftic.co.il/2012AntalyaPDF/SESSION%2001%20PAPER%2006.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
