Abstract Title:

Boric acid bait kills adult mosquitoes (Diptera: Culicidae).

Abstract Source:

J Econ Entomol. 2003 Oct;96(5):1559-62. PMID: 14650531

Abstract Author(s):

Rui-De Xue, Donald R Barnard

Article Affiliation:

Center for Medical, Agricultural, and Veterinary Entomology, USDA-ARS, P.O. Box 14565, Gainesville, FL 32604, USA.


The toxicity of boric acid solutions to adult Anopheles quadrimaculatus Say, Culex nigripalpus Theobald, and Aedes albopictus Skuse was evaluated in the laboratory. Median lethal concentrations (LC50 in %) at 24-h exposure for male and female An. quadrimaculatus were 0.317 and 0.885, respectively; for Cx. nigripalpus, 0.273 and 0.560, respectively; and for Ae. albopictus, 0.174 and 0.527, respectively. The LC50 values at 48-h exposure for male and female An. quadrimaculatus were 0.101 and 0.395, respectively; for Cx. nigripalpus, 0.098 and 0.255, respectively; and for Ae. albopictus, 0.078 and 0.244, respectively. In laboratory tests, access for 48 h to sucrose (10%) water containing 1% boric acid (boric acid bait) resulted in 98% mortality in blood fed, gravid, and parous Ae. albopictus. When offered a choice between boric acid bait and sucrose water, 52% of male and 33% of female Ae. albopictus ingested sufficient boric acid bait in 24 h to cause death; after 48 h, respective percent mortalities were 88 and 58%. In outdoor tests, in a walk-in screened cage (156 m3) containing 1,250 female Ae. albopictus, mosquito biting rates on the exposed forearm of a human subject in 3-min exposure were reduced>or = 78% for the boric acid bait treatment, compared with a sucrose water control.

Study Type : Animal Study
Additional Links
Problem Substances : Boric Acid : CK(44) : AC(0)

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