Journal of Pest Science (2017) 90, 369-378

Roman Pavela and Marimuthu Govindarajan (2017)
The essential oil from Zanthoxylum monophyllum a potential mosquito larvicide with low toxicity to the non-target fish Gambusia affinis
Journal of Pest Science 90 (1), 369-378
Abstract: The mosquito larvicidal activity of Zanthoxylum monophyllum leaf essential oil (EO) and its major chemical constituents was tested against the three mosquito vectors Anopheles subpictus, Aedes albopictus and Culex tritaeniorhynchus. In the EO of Z. monophyllum, it contains 36 compounds with the two major compounds being Germacrene D-4-ol (19.40 %) and α-Cadinol (12.30). The larvicidal activity of the essential oil against An. subpictus, Ae. albopictus and Cx. tritaeniorhynchus was determined and LC₅₀ values were estimated at 41.50, 45.35 and 49.01 µg/mL, respectively. The two major compounds Germacrene D-4-ol and α-Cadinol were tested for acute toxicity against larvae of the three mosquito vectors. Germacrene D-4-ol showed a significantly higher efficacy compared to α-Cadinol. While LC₅₀ for Germacrene D-4-ol ranged from 6.12 to 7.26 µg/mL, LC₅₀ values for α-Cadinol were estimated in the range from 10.27 to 12.28 µg/mL. The EO, Germacrene D-4-ol and α-Cadinol were found safer to the non-target organism Gambusia affinis (LC₅₀ = 4234.07,414.05 and 635.12 µg/mL, respectively), which was manifested in the high suitability of the index/predator safety factor value, ranging from 86.36 for the least sensitive larvae of Cx. tritaeniorhynchus to 102.02 for the most sensitive larvae of An. subpictus.
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Link to article at publishers website
Database assignments for author(s): Roman Pavela

Research topic(s) for pests/diseases/weeds:
control - general
health/environmental effects of pesticides
Research topic(s) for beneficials or antagonists:
resistance to pesticides

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Culex tritaeniorhynchus
	Aedes albopictus
	Anopheles subpictus
Gambusia affinis (predator)