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Topical toxicity of avermectin B1 to Mediterranean fruit fly,Ceratitis capitata (Wiedemann); oriental fruit fly, Dacus dorsalis Hendel; and melon fly, Dacus cucurbitae Coquillett, was assessed over a 21-d observation period. Mortality stabilized 5–21 d after treatment. LD50's for female D. dorsalis, D. cucurbitae, and C. capitata were 0.021 g/g (5 d), 0.042 g/g (15 d), and 0.29 g/g (10 d), respectively; LD50's for male D. dorsalis, D. cucurbitae, and C. capitata were 0.012 g/g (21 d), 0.025 g/g (15 d), and 0.58 g/g (5 d), respectively. Doses that caused <25% female mortality significantly reduced fecundity in all three species whether or not males were treated before mating. Fertility was significantly reduced in D. dorsalis but seemed dependent upon whether males were treated and paired with treated females. D. cucurbitae showed greatly reduced fertility regardless of whether treated or untreated males were paired with treated females. Avermectin B1 treatment also reduced fertility in C. capitata, but the effect was minimal.
Document Type: Research Article
Publication date: April 1, 1987
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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.