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International Journal of Zoological Research
Year: 2018  |  Volume: 14  |  Issue: 1  |  Page No.: 37 - 42

Insecticidal Activities of the Leaf Powders of Chromolaena odorata and Mimosa diplotricha against the Common Bed Bug, Cimex lectularius (L.)

Osariyekemwen Uyi, Adeyemi Daniel Adetimehin, Ekene Edwin Uyamasi and Afure Joan Ejomah    

Abstract: Background and Objective: Bed bugs, C. lecturalius are small hematophagous parasitic insects that feed on man, bats, chickens and other domestic animals causing severe irritation, inflammation, anaemia and general body discomfort. Studies on the use of invasive alien plants in the control of insect pests are not uncommon. Therefore present study investigated the insecticidal activities of C. odorata and M. diplotricha leaf powders against the adults of the common bed bug, C. lectularius. Materials and Methods: Five unsexed adult C. lectularius were exposed to different concentrations (0.0, 0.5, 1.0, 1.5 and 2.0 g) of C. odorata and M. diplotricha leaf powders for 24, 48, 72, 96, 120, 144 and 168 h after which percentage mortality was calculated. Results: Mortality of C. lectularius caused by the leaf powders of C. odorata and M. diplotricha was considerably high and observed to be concentration and exposure time dependent. At the highest concentration (2.0 g), C. odorata and M. diplotricha leaf powders accounted for 72 and 71% mortality of C. lectularius, respectively following a 168 h exposure period. Conclusion: In sum, this study is the first to demonstrate the insecticidal efficacy of C. odorata and M. diplotricha leaf powders against the common bed bug, C. lectularius and further suggests their usage in the control of the pest in Nigeria and elsewhere.

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