Reduction of Sexual Aggressiveness of Male Codling Moths Treated with Tepa or Gamma Irradiation

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Sexual aggressiveness of male Laspeyresia pomonella(L.) was measured by comparing the longevity of female codling moths confined at various ratios with untreated males or with males treated with tepa or gamma irradiation. Females held without males lived 9.3 days, females caged at a ratio of 7 untreated males per female lived 4.2 days, and females confined at the same ratio with males treated with 40 kr of gamma irradiation or with 15 or 30 g of tepa, lived 5.1, 6.1, and 7.6 days, respectively. Also, when untreated males were caged with females at ratios of 1:1 and 7:1, the females contained 2.1 and 3.9 spermatophores, respectively; those caged at the same ratios with males treated with 15 g of tepa contained 1.7 and 4.3 spermatophores, respectively.

Document Type: Research Article

Publication date: December 15, 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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