Comparative Mating Competitiveness of Metepa-Sterilized and Normal Pink Bollworm Males in Laboratory and Field Cages

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Abstract:

Male pink bollworms, Pectinophora gossypiella (Saunders), sterilized (S) with the established optimum dosage of 15 g of technical metepa, were fully competitive with normal (N) males in mating with females at all ratios (S ♂ : N ♀) tested. With a constant male ratio (4 S : 1 N) and varied dosages, males sterilized with 15 g technical metepa per male were fully competitive with normal males and exhibited some competitiveness when sterilized with 50 g, the highest dosage investigated. In field-cage experiments with a single release at a 9:1 (S:N) male ratio, males sterilized with 30 g each did not reduce the population when compared with that in the untreated checks, but those sterilized with 15 g reduced the number of F1 larvae by 81.1%.

Document Type: Research Article

Publication date: October 1, 1965

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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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