Fall Migration, Hibernation Site Selection, and Associated Winter Mortality of Plum Curculio (Coleoptera: Curculionidae) in a Quebec Apple Orchard
Authors: Lafleur, Gerald; Hill, Stuart B.; Vincent, Charles
Source: Journal of Economic Entomology, Volume 80, Number 6, December 1987 , pp. 1152-1172(21)
Publisher: Entomological Society of America
Abstract:In fall, >5,000 labeled (65Zn) adult plum curculio (PC), Conotrachelus nenuphar (Herbst), were released in two orchards, two woodlots, and 16 microplots in a plowed field. From orchards, most PC migrated toward high tree silhouettes at the edge of woodlots unless they occurred to the north. Most PC (83%) released within woodlots, with no directional differences in tree silhouette, migrated south. Migration was influenced by woodlot type and direction. Where woodlots had a thin litter layer, PC remained at the edge or returned to the orchard. In a field choice experiment, hibernating PC were recovered in thick litter (86%) and orchard turf (14%) plots, whereas none were found in gravel and thin litter layer plots. In field conditions, most PC hibernated within the litter layer; very few (<1%) penetrated the soil. Survival was related to preferred microhabitat type. Speed of dispersion was highest just after release in early September (3 m per insect per day) and close to zero by mid-October. Females dispersed further than males. A pathogenic fungus and bacterium were isolated from diseased PC. Nontarget organisms contaminated with 65Zn included spiders, slugs, earthworms, and birds. Implications for control and future research are discussed.
Document Type: Research Article
Publication date: 1987-12-01
- 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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