Long-Term, Large-Scale Effects of Insecticidal Control on Rangeland Grasshopper Populations (Orthoptera: Acrididae)


Source: Journal of Economic Entomology, Volume 81, Number 5, October 1988 , pp. 1258-1264(7)

Publisher: Entomological Society of America

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The characteristics of rangeland grasshopper outbreaks were assessed among adjacent border counties in Wyoming and Montana by the use of Markovian models. Based on about 30 yr of historical survey data, the probability, duration, and stability of economically damaging grasshopper populations were consistently greater in Wyoming counties than in adjacent Montana counties. These long-term, large-scale differences appear to be attributable to intensive insecticidal control efforts in Wyoming. Target pest resurgence, in which beneficial insects are eliminated by insecticides, thereby allowing rapid growth of a pest population, may be responsible for the counterproductive aspects of an intensive chemical control program against grasshoppers.

Document Type: Research Article

Publication date: October 1, 1988

More about this publication?
  • 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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