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Larval and Pupal Weight Relationships of Six Strains of Screwworm (Diptera: Calliphoridae) Reared in the Laboratory and in Wounds

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Relationships were determined between larval and pupal weight of the primary screwworm, Cochliomyia hominivorax (Coquerel), reared in the laboratory on an artificial diet and in animal wounds. Six strains were studied, 083, Micholima, A82, V81, Sinaloa, and 009 in colony for 5–183 generations. Linear regression analyses of larval and pupal weight showed the 083 and A82 strains reared in the laboratory to be significantly different from each other and the other strains tested. This difference could not be attributed to length of time in colony or to geographic origin of the strains. There was no significant difference in the relationship between larval and pupal weights for the six strains of screwworms reared in wounds. Composite regression lines for laboratory and wound-reared larvae and pupae were not significantly different. Mean weight loss from larva to pupa was 21 and 23% for wound and laboratory-reared screwworms. Survival from larva to adult was 91 and 94% for those reared in the laboratory and in wounds, respectively.

Document Type: Research Article

Publication date: December 1, 1987

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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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