| Autor: |
Wangrawa, Dimitri Wendgida, Yaméogo, Félix, Sombié, Aboubacar, Esalimba, Edward, Ochomo, Eric, Borovsky, Dov, Badolo, Athanase, Sanon, Antoine |
| Zdroj: |
Journal of Medical Entomology; September 2023, Vol. 60 Issue: 5 p1030-1037, 8p |
| Abstrakt: |
The massive and inappropriate use of synthetic insecticides is causing significant and increasing environmental disruption. Therefore, developing effective natural mosquitocidal compounds could be an alternative tool for malarial vector control. The present study investigates the larvicidal and adulticidal effect of methanol and acetone extracts of leaves from Lippia chevalieri, Lippia multiflora, Cymbopogon schoenanthus, and Lantana camaraagainst Anopheles arabiensis, to control the most widespread vector transmitting malaria in sub-Saharan. Africa. Extracts were evaluated following WHO modified test procedure against third- to fourth-instar larvae and, non-blood-fed females from 3- to 5-day-old field populations of An. arabiensisunder laboratory conditions using WHO larval and CDC bottle bioassays, respectively. Mortality was recorded after 24-h exposure and several compounds were identified in the extracts. The methanolic and acetonic extracts of L. camarawere effective against larvae showing lethal concentrations to 50% (LC50) of the population, at 89.48 and 58.72 ppm, respectively. The acetonic extracts of C. schoenanthusand L. chevalierishowed higher toxicities LC50s of 0.16% and 0.22% against female adults, respectively. The methanolic extracts of L. multifloraand L. chevalieriLC50s were effective at 0.17% and 0.27%, respectively, against female adults. These results indicate that the plant extracts tested may represent effective means to control An. arabiensiswhen used to treat the surface of the marshes. |
| Databáze: |
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