Radioisotope Technique for Estimating Lady Beetle Consumption of Tobacco Budworm Eggs and Larvae
Authors: Moore, S. T.; Schuster, M. F.; Harris, F. A.
Source: Journal of Economic Entomology, Volume 67, Number 6, December 1974 , pp. 703-705(3)
Publisher: Entomological Society of America
Abstract:Females of the tobacco budworm, Heliothis virescens (F.), were fed Phosphorus-32 (in NaH232PO4)in a 10% sucrose solution. Eggs and larvae of the moths were assayed for radioactivity before feeding them to the adult lady beetles, Coleomegilla maculata DeGeer. The adults were assayed for radioactivity each day for 10 days after consumption of the eggs or larvae. Radioactivity levels in the lady beetles showed a gradual decline each day after consumption of egg or larvae.
Prediction equations from regression analysis indicate that the number of eggs or larvae eaten by adult C. maculata can be predicted in laboratory or field studies after determining radioactivity of H. virescens eggs or larvae prior to lady beetle consumption.
Document Type: Research Article
Publication date: December 1, 1974
- 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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