Sub-Lethal Gamma Radiation Effects on Prepupae, Pupae, and Adults of Angoumois Grain Moth
Authors: Qureshi, Zafar A.; Wilbur, D. A.; Mills, R. B.
Source: Journal of Economic Entomology, Volume 61, Number 6, 16 December 1968 , pp. 1699-1705(7)
Publisher: Entomological Society of America
Abstract:Effects of gamma radiation from cobalt-60 on prepupae, pupae, and adults of Sitotroga cerealella (Olivier) were determined. Pupal sensitivity depended on age at treatment; the older the pupae, the less susceptible. Irradiation of per pupae and 1-day-old pupae resulted in reduced numbers, delayed and incomplete adult emergence, and in structural deformities including twisted wings and fusion of tarsal and antennal segments. No dose tested on late pupae significantly affected adult emergence. Larvae hatched from the eggs of irradiated 1-day-old adults, but the number of F1 moths was less than in the controls. Females, irradiated at 10 kr as prepupae and mated with normal virgin males or vice versa, either did not oviposit or laid infertile eggs. Irradiation of early pupae at 20 kr may cause complete sterility of both sexes. Following irradiation of late pupae, no dose from 5 to 25 kr prevented hatching of eggs in crosses where treated males were mated to untreated females or vice versa. When males and females, irradiated as 1-day-old moths, were mated, egg deposition and hatchability were markedly reduced. The males remained fertile at all doses.
Document Type: Research Article
Publication date: December 16, 1968
- 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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