Population Dynamics of the Colorado Potato Beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae), on Solanum berthaultii
Authors: Groden, Eleanor; Casagrande, Richard A.
Source: Journal of Economic Entomology, Volume 79, Number 1, February 1986 , pp. 91-97(7)
Publisher: Entomological Society of America
Abstract:Population dynamics of the Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say), differed on two host plants: Solanum tuberosum L., and the wild potato plant, S. berthaultii Hawkes. In both laboratory and field studies, the beetles developed more slowly on S. berthaultii. In the field the CPB first generation index (number of beetles released per cage divided by number of emerging beetles) was reduced on S. berthaultii relative to S. tuberosum. Immigration was lower and dispersal and larval mortality were higher on S. berthaultii. Adult longevity did not differ between the two host plants. Winter survival was 75% lower on S. berthaultii than on S. tuberosum. After two generations of confinement on S. berthaultii in the field, beetles no longer demonstrated a reluctance to oviposit on this host. Survival of larvae from the third generation reared on S. berthaultii was comparable with survival of larvae raised on S. tuberosum.
Document Type: Research Article
Publication date: 1986-02-01
- 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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