In Vitro Rearing of the Boll Weevil (Coleoptera: Curculionidae) Ectoparasitoid Catolaccus grandis (Hymenoptera: Pteromalidae) on Meridic Diets

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The pteromalid Catolaccus grandis (Burks), an obligate ectoparasitoid of the boll weevil, Anthonomus grandis grandis Boheman, successfully completed development on 5 original meridic diets. These diets produced C. grandis females of significantly higher quality than those produced on a previously reported meridic diet. Pupal weight and fecundity of females reared in the 5 meridic diets were lower than for females reared in vivo, but, higher than for females reared in a previously developed diet. There was no significant difference between progeny sex ratio of females reared in the 5 new diets from those of females reared in vivo. Based on net reproductive rate (R)0 values of females reared in the 5 new diets, the best artificial diet showed a R0 value of 135.16 as compared to an R0 value of 143.6 for parasitoids reared in vivo. Parasitoids reared in previously developed artificial diets had significantly lower pupal weight, fecundity, survival, and R0 value as compared with C. grandis reared in the 5 new diets. This implies that the presence of some amino acids such as histamine, proline, and glutamic acid in the correct proportions is essential for the growth and development of C. grandis.

Document Type: Research Article

Publication date: October 1, 1996

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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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