Journal
JOURNAL OF ECONOMIC ENTOMOLOGY
Volume 93, Issue 1, Pages 43-47Publisher
OXFORD UNIV PRESS INC
DOI: 10.1603/0022-0493-93.1.43
Keywords
Artemisia annua; Callosobruchus; Tribolium; essential oil
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The essential oil of Artemisia annua L. was tested for its toxic repellent and development inhibitory activities against 2 economically important stored product insects: Tribolium. castaneum (Herbst) and Callosobruchus maculatus (L.). Adult beetles of T. castaneum were repelled significantly Ly oil of A. annua at 1% concentration (vol:vol) and above in filter paper arena test. Dose-response relationship of A. annua oil revealed a significant negative correlation between lan al survival; pupal survival and adult emergence of T, castaneum (i.e., increase in dose caused decrease in survival and adult emergence). Effective concentration (EC50) to reduce F-1 progeny by 50% was calculated to be 2.6 and 4.1 mu l/ml solvent against both the insect species, C, maculatus and T. castaneum, respectively. The relationship between bioactivity of oil from A. annua and responses of T. castaneum and C. maculatus is discussed. We found that oil from A. annua was largely responsible for both repellent (behavioral) and toxic (physiological) actions on 2 species of insect tested.
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