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Asian Journal of Applied Sciences
Year: 2017  |  Volume: 10  |  Issue: 1  |  Page No.: 39 - 44

Larvicidal Potency of Arta (Calligonum comosum L'Her.) Extract on the Biology of Culex pipiens Mosquito

Lamya Ahmed Al- Keridis    

Abstract: Background and Objective: In recent years, application of synthetic insecticides in mosquito control program has been limited due to the concern about environmental sustainability; therefore, an urgent looking for environmental friendly insecticides against mosquito species was designed. In the current investigation, the green shoot extract of arta (Calligonum comosum L'Her.) has been assayed to evaluate its influence as a potential larvicidal on the second instar larvae of Culex pipiens mosquito. Materials and Methods: The plant samples were collected from the natural vegetation surrounding Riyadh, Saudi Arabia. Different concentrations of ethanolic plant extract (50, 75 and 100%) were applied against Culex pipiens mosquito and the effect was monitored every 3 h over a total exposure time period of 24 h. The GC-MS technique was employed to detect the chemical compounds in the ethanolic plant extract. Results: It has been found that the shoot extract of arta, Calligonum comosum was effective against the second instar larvae of Culex pipiens mosquito as indicated by the total mortality rate after 15, 18 and 24 h corresponding to concentrations 100, 75 and 50%, respectively. These results showed that the larvicidal activity of the Calligonum comosum extract was concentration-time-dependent. Conclusion: The present findings strongly suggest that Calligonum comosum extract consists of bioactive compounds which are toxic to Culex pipiens mosquito larvae. For gaining betting deeper insights on the mechanism underlying the mode of action behind the efficacy of arta, Calligonum commosum extract on controlling mosquito, further detailed studies are required.

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