Effects of Temperature and Wind Speed on Pink Boll worm (Lepidoptera: Gelechiidae) Moth Captures During Spring Emergence

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Abstract:

Numbers of pink boll worm moths, Pectinophora gossypiella (Saunders), captured daily in California's Palo Verde Valley during spring emergence were recorded in 6 data sets: 1985 emergence cages; 1986, 1987, and 1989 pheromone traps in cotton fields; and 1986 and 1989 valley wide pheromone survey traps. For 5 of the 6 data sets, numbers of moths were positively correlated with mean temperature for the interval 1800-2200 hours and minimum temperature for the interval 1800-0600 hours, and negatively correlated with mean wind speed for the interval 1800-2200 hours and the time at which wind speed fell below and stayed <2.7 m/s for the remainder of the night. Multiple regression was used to relate numbers of moths captured to these 4 weather variables. With non significant variables deleted from each regression model, R2 ranged from 0.86 to 0.96. Observations combined over data sets showed that numbers of moths captured were greatly reduced at temperatures <18.1, were reduced at intermediate temperatures only on windy nights, and were less affected by wind at temperatures >22. Although temperature and wind affect dispersion of the pheromone plume, there appears to be a direct effect on the moths themselves because regression model parameters were similar in nonpheromone-baited emergence cages and in pheromone traps.

Document Type: Research Article

Publication date: October 1, 1995

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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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