Investigation reveals larvicidal activity of volatile oil from Solenostemon monostachyus against Anopheles gambiae, suggesting potential eco-friendly control methods.
Synthetic larvicides have been used to control malarial vector. However, increasing resistance ofmosquito larvae to the synthetic larvicides poses great problem in the vector control. Naturalcontrol with plant essential oil may serve as an alternative. This study investigates the chemicalconstituents and larvicidal activity of volatile oil obtained from Solenostemon monostachyusagainst the larvae of Anopheles gambiae. The volatile oils were extracted using hydro-distillationin a Clevenger type apparatus and analyzed using GC-MS. The larvicidal assay was carried outagainst Anopheles gambiae larvae at concentration range of 12.5- 400 μg/mL. The analysis ofthe volatile oil showed that the major constituents of the oil were Caryophyllene oxide (21.6%),β-Caryophyllene (19.6%), β-Pinene (9.8%) and Germacrene D (7.3%). Results showed thatlarval mortality increases with increasing exposure period to the volatile oils from S.monostachyus. The larvicidal activity demonstrated that the mosquito larvae were susceptible tothe volatile oil with LC50 of 23.44 μg/mL. The results suggest that S. monostachyus essential oilhas potentials for the control of Anopheles gambiae. Therefore the plant may serve as a potentialsource of raw material for a new and eco-friendly larvicide.
No takes yet. Share an insight, caveat, or question.
Atiko et al. (2022) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: