Journal of Vector Ecology (1996) 21, 146-149

Han-Yeng Yap, Annie E.S. Foo, Chow-Yang Lee, Ngo-Long Chong, Abdul Hamid Awang, Rohaizat Baba and Abdul Malik Yahaya (1996)
Laboratory and field trials of fenthion and cyfluthrin against Mansonia uniformis larvae
Journal of Vector Ecology 21 (2), 146-149
Abstract: A laboratory bioassay of insecticides against laboratory-reared late third/early fourth-instar larvae of Mansonia uniformis indicated that the synthetic pyrethroids tested (cyfluthrin and permethrin) were more active than the organophosphate compounds tested (chlorpyrifos, fenthion, and temephos). The LC₅₀ values ranged from 0.09 (cyfluthrin) to 7.68 µg/l (temephos). Field trials of fenthion (Baytex GR2) and cyfluthrin (Baythroid H10WP) against laboratory-cultured late third/early fourth-instar larvae of Mansonia uniformis in floating screened cages were conducted in small plots on Penang Island, Malaysia. At respective doses of 0.50 and 0.30 g/m² (5.0 and 3.0 kg/ha); both fenthion and cyfluthrin caused more than 90% mortality of the Mansonia larvae exposed at 0 hour post-treatment. The use of these larvicides for the control of Mansonia larvae in open field environments is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Chow-Yang Lee

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Mansonia uniformis		Malaysia