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1 July 2002 Evaluation of Insecticide Impregnated Baits for Control of Mosquito Larvae in Land Crab Burrows on French Polynesian Atolls
Frederic Lardeux, Yves Sechan, Marc Faaruia
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Abstract

Land crab burrows are larval mosquito habitats of major significance in the Pacific region. They are constituted by a sinuous tunnel leading to a chamber in contact with the water table, where mosquito larvae proliferate. Controlling larvae in these sites is difficult, because the configuration of burrows prevents the use of standard techniques. An experiment was carried out in French Polynesia to control Aedes polynesiensis Marks and Culex spp. breeding in burrows of the land crab Cardisoma carnifex (Herbst). The technique was based on the crab’s behavior, which involves the crab carrying food into its burrow. It was shown that appetizing baits impregnated with an insecticide were carried by crabs into the flooded chamber of their burrows. A field treatment of burrows was carried out by sowing insecticide impregnated baits on the ground. The treatment coverage was almost perfect and the easy implementation of the technique enabled large areas to be treated in a short time. The bait was developed by compacting various flours, which easily incorporate a large variety of insecticide formulations. Although the baits can be easily stocked, a reliable insecticide is still to be found. The results indicate that our technique could be a method of choice for treating crab burrows.

Frederic Lardeux, Yves Sechan, and Marc Faaruia "Evaluation of Insecticide Impregnated Baits for Control of Mosquito Larvae in Land Crab Burrows on French Polynesian Atolls," Journal of Medical Entomology 39(4), 658-661, (1 July 2002). https://doi.org/10.1603/0022-2585-39.4.658
Received: 4 August 2000; Accepted: 1 November 2000; Published: 1 July 2002
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