Mortality Response of Potato Leafhopper (Homoptera: Cicadellidae) to Low Temperatures: Implications for Predicting Overwintering and Early Migrant Mortality

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Mortality response to a 30-min exposure to low temperature was studied for all sta!?es of the potato lea˜hop˜er, Emp.o˜sca fabae (Harris). The relationship between mortal˜ty an.d tem˜erature fit a lmear logistic regression model for each stage from egg to adult, mcluslve. This model satisfactorily described data for the egg, first and second in star, ˜nd adult female only after allowing for extra-binomial variation. For the first- and second star data, a model with common slope but different intercepts was used. A common curve described the mortality responses of instars three through five. Cold hardiness increased with dev˜lopment stage from egg through adult. Implications for predicting over wintering populahon and early migrant mortality are discussed.

Document Type: Research Article

Publication date: August 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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