Studies on the Eradication of Anopheles pharoensis by the Sterile-Male Technique Using Cobalt-60. III. Determination of the Sterile Dose and Its Biological Effects on Different Characters Related to "Fitness" Components1


Source: Journal of Economic Entomology, Volume 60, Number 1, February 1967 , pp. 20-23(4)

Publisher: Entomological Society of America

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Pupae of Anopheles pharoensis Theobald were subjected to various doses of gamma rays from Cobalt-60, i.e., 10,000-13,000rontgen with 1,000 röntgen increments to study their effects on lifetime egg production, egg hatchability, and longevity of adult mosquitoes and to find the exact dose of gamma rays which may cause complete male sterility. The sterilizing dose (12,000 röntgen) was used to investigate its adverse effects on pupae of different ages and the dose fractionation on the emerged adults.

The results indicate clearly the adverse effects of high doses of gamma radiation on all characters studied except longevity of adult mosquitoes. A dose of 12,000 röntgen caused complete sterility in both sexes. The results suggest that it was better to give the whole amount of the sterilization dosage at once rather than in fraction when pupae aged 15-20 hours were used.

Document Type: Research Article

Publication date: February 1, 1967

More about this publication?
  • 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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