Effects of Combinations of Irradiation and Chemosterilization on Mating Competitiveness of Culex quinquefasciatus Say
Authors: El-Gazzar, Lalla M.; Dame, David A.
Source: Journal of Economic Entomology, Volume 76, Number 6, December 1983 , pp. 1331-1334(4)
Publisher: Entomological Society of America
Abstract:Pupae of Culex quinquefasciatus Say from a laboratory colony were sterilized when 20 to 26 h old by immersion in bisazir [P, P-bis (l-aziridinyl)-N-methyl phosphinothioic amide] solution, by gamma irradiation, or by combinations of substerilizing treatments of both. Greater than 99% male sterility was achieved when pupae were irradiated at ca. 8 kR or immersed in 1% bisazir solution for 30 min. Combinations of radiation and chemical sterilization, each at substerilizing levels, produced levels of sterility expected for an additive relationship between the two sterilizing agents. The empirical relationship between sterility (S) and the two sterilizing agents was characterized by the formula: S = −7.73 + 9.76 B + 14.36 K −1.44 BK − 0.06 B2 + 0.44 K2, where B = minutes of exposure to bisazir and K = radiation dose in kR. Males sterilized by bisazir were fully (96%) competitive under laboratory conditions, whereas males sterilized by treatments involving irradiation (26%) or a combination of bisazir and irradiation (15%) were less competitive.
Document Type: Research Article
Publication date: 1983-12-01
- 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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