Resistance to Aldrin in the Rice Water Weevil in Louisiana1

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Laboratory studies conducted during 1965 and 1966 using the topical-application technique demonstrated resistance to aldrin in the rice water weevil, Lissorhoptrus oryzophius Kuschel, in Louisiana. High levels (100- to two-fold) of resistance were found in weevils from Alsatia, Crowley, and Ville Platte. Intermediate levels (.5- to 10 fold) of resistance in weevils were shown to be widespread over the major rice-producing area of Louisiana The more susceptible weevils were found principally around the fringes of the major rice area.

The aldrin-resistant rice water weevils from Alsatia and Crowley also appeared to be resistant to endrin but not to methyl parathion and Nia 10242 (2,3.dihydro-2,2 dimethyl-7-benzofuranyl methylcarbamate).

Document Type: Research Article

Publication date: August 1, 1967

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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