Reduction in the Fertility of Female Choristoneura occidentalis1,2 by Lannate

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A low dose of LannateĀ® (S-methyl N-[(methylcarbamoyl) oxylthioacetimidate) topically applied to 6th-stage larvae of the western spruce budworm, Choristaneura occidentalis Freeman, caused hyperactivity, regurgitation, bleeding, and prostration, resulting in loss of hemolymph and gut fluid equaling 28% of body weight for 5th and 6th larval stages. Larvae treated with Lannate in the 6th stage showed lower pupal weights and reduced fertility in adults. Larvae treated in the 5th stage gained normal pupal weights when fed, but still showed reduced fertility.

Document Type: Research Article

Publication date: October 1, 1970

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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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