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Four amino acid analogues, imidazole, canavanine, p-fluorophenylalanine, and ethionine, were tested in diets for their effects on inhibiting reproduction in the female dipterous parasitoid Pseudosarcophaga affinis auct, nee Fallén. Effects of diets lacking in corresponding amino acids also were studied. Diets deficient in methionine and supplemented with ethionine affected reproduction during the 1st and 2nd oöcyte-growth cycles, whereas diets deficient in histidine, arginine, or phenylalanine, or those supplemented with their respective analogues, affected only the 2nd oöcyte-growth cycle. The various effects observed were inhibition of oöcyte growth, delay or lack of yolk deposition, and irregular ovulation and parturition. Lack of effect in the 1st oöcyte-growth cycle is presumably due to the carryover from the larval stage of nutrients required for oöcyte-growth. It is suggested that amino acid analogues offer promise not only for reducing insect fecundity but also as tools in research on insect reproductive metabolism.
Document Type: Research Article
Publication date: December 15, 1970
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.