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Some Environmental Factors Affecting Feeding, Oviposition, and Survival of the Southern Corn Rootworm1,2

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The effect of food, light, humidity, and temperature on feeding, oviposition, and survival of the southern corn rootworm, Diabmtica undecimpunclata howardi Barber, was studied under controlled laboratory conditions.

Adult rootworms preferred to feed in the light on lettuce and sliced yellow squash and they preferred to oviposit in the shade or dark on moist cotton in preference to candidate legumes or curcubits. Larvae did not reject any food offered in a forced-feeding (isolation) test, but they preferred sliced yellow squash when given a choice.

Humidity has a significant effect on adult survival, oviposition, and egg hatch. A relative humidity above 75% was established as essential.

Adult survival, oviposition and longevity were studied at 5 temperatures ranging from 45 to 95. Longevity was best at 65, and 95 was detrimental after 3 days' exposure. Few eggs were deposited at 45, large numbers were deposited at all test temperatures above 65, and oviposition was optimum at 85

Document Type: Research Article

Publication date: December 1, 1967

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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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