Economic Thresholds for Lone Star Ticks (Acari: Ixodidae) in Recreational Areas Based on a Relationship Between CO2 and Human Subject Sampling

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A relationship between CO2 (dry ice) and human subject attraction of free-living adults and nymphs of Amblyomma americanum (L.) was studied in upland oak-hickory habitat in LeFlore County, Okla., during April to June 1981. Correlation coefficients of 0.75 to 0.90 (significant at P = 0.01) were obtained from analyses of numbers of ticks attracted to CO2 and human subjects at the same sampling sites, but on different days. Regression analyses showed that numbers of ticks attracted to human subjects could be predicted from CO2 densities with an acceptable level of precision. Economic threshold (CO2 densities) were then calculated from regression equation data for an eight-fold range of selected tick attack rates. An economic threshold of 0.65 ticks per l-h CO2 sample was suggested for general use in tick management for recreational areas.

Document Type: Research Article

Publication date: April 1, 1983

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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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