Feeding Rhythm in larvae of the Gypsy Moth1,2

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Abstract:

The feeding rhythm of larvae of Portheiria dispar (L.) was determined from field observations. In stages I through III larvae began feeding at dawn, but not when temperatures were below 45°. The peak of feeding occurred in the morning, with some feeding observed throughout the day. When not feeding, or at night, larvae remained quiescent on the undersides of leaves. At stage IV there was a sharp shift in the feeding rhythm, with feeding initiated in the evening and reaching a peak at sunset. About midnight, feeding activity began to decline, with small increases in feeding noted before sunrise, and between 7 and 8 AM. The numbers of larvae feeding during the day were small.

Document Type: Research Article

Publication date: October 1, 1970

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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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