Actographs for Recording Daily Activity of Plum Curculio (Coleopera: Curculionidae)

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Two types of actographs were designed to study changes in daily activity of plum curculio, Conotrachelu8 nenuphar (Herbst), throughout two growing seasonsin southwestern Quebec. The technique is based on plum curculio's thanatose behavior. During the time when adult plum curculio are active, they repeatedly climb up the walls of cages and drop to the floor. The rate at which they do so provides a measure of their activity. Two years' data indicated that their activity patterns change throughout the growing season. Before apple fruit set, plum curculio dropped mostly during the night. During fruit set and June drop, they remained active throughout the day and night. During mid-summer, the pattern of activity was less predictable. Adults resumed nocturnal dropping activity during the fall.

Document Type: Research Article

Publication date: December 1, 1990

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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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