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1 November 2009 Larvicidal Activity of Compounds Isolated from Asarum heterotropoides Against Culex Pipiens Pallens, Aedes aegypti, and Ochlerotatus togoi (Diptera: Culicidae)
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Abstract

The toxicity of several compounds isolated from Asarum heterotropoides root steam distillate to third-instar larvae of Culex pipiens pollens Coquillett, Aedes aegypti (L.), and Ochlerotatus togoi Theobald was examined using a direct contact mortality bioassay. Safrole was the most toxic constituent to Cx. p. pallens and Ae. aegypti larvae, whereas terpinolene was most toxic to Oc. togoi. However, LC50 values of these three mosquito larvae to both essential oils as well as the remainder of the 26 compounds identified in A. heterotropoides were considerably greater than for fenthion or temephos. However, we suggest that constituents of A. heterotropoides root steam distillate merit further study as potential mosquito larvicides due to global efforts to reduce the level of highly toxic synthetic pesticides in the aquatic environment.

© 2009 Entomological Society of America
Haribalan Perumalsamy, Nam-Jin Kim, and Young-Joon Ahn "Larvicidal Activity of Compounds Isolated from Asarum heterotropoides Against Culex Pipiens Pallens, Aedes aegypti, and Ochlerotatus togoi (Diptera: Culicidae)," Journal of Medical Entomology 46(6), 1420-1423, (1 November 2009). https://doi.org/10.1603/033.046.0624
Received: 6 April 2009; Accepted: 1 August 2009; Published: 1 November 2009
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