Chrysomphalus aonidum (L.) was considered only an incidental pest of Texas citrus in 1980 as compared with a pest status of ninth most important pest in 1950. Certain pesticides were associated with the kill of an effective parasite Aphytis holoxanthus DeBach when this scale insect became an economic pest. The greatest numbers of scales were found during the July–November period, whereas the smallest numbers were found in the March–April period. A. holoxanthus varied by the abundance of scales, but were most numerous in June and November from 1972 to 1980. The scale-to-parasite ratio was larger during the July–August period when scales were rapidly increasing. Evidence of the regulatory effect of the introduced parasite was based on the pest-to-parasite relationships in specific months, along with reduced scale abundance for several consecutive years.
Document Type: Research Article
Publication date: February 1, 1982
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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.