Consumption and Utilization by the Mexican Bean Beetle of Soybean Plants Varying in Levels of Resistance

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Abstract:

Standard gravimetric techniques were used to measure mean body weight, total weight gain, weight of food consumption, efficiency of conversion, consumption index, and growth rate of larvae of Epilachna varivestis Mulsant which fed from hatch to pupation on 15 soybean varieties. The varieties ranged from highly resistant to highly susceptible, Developmental time, mean pupal weight, and percent survival also were determined.

A wide range of parameters was obtained with the results expressed using techniques of numerical taxonomy in a dendrogram. The clusters formed in the dendrogram represent rankings similar to field evaluation of these varieties and reflect trends of the nutritional and biological parameters of the Mexican bean beetle feeding on the soybean varieties.

Physiological inhibitors or biophysical deterrents in P.I. 229358 and nutritional deficiencies or nutrient disproportionality in P.I. 200459, P.I. 200498, P.I. 224269, and P.I. 229321 were postulated as possible causes of resistance.

Document Type: Research Article

Publication date: August 1, 1975

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.
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