Monday, 18 November 2002
D0173

This presentation is part of : Display Presentations, Section B. Physiology, Biochemistry, Toxicology, and Molecular Biology

Acoustic monitoring of activity patterns by Cyclocephala lurida (Bland), Phyllophaga congrua (LeConte), P. crinita (Burmeister), and P. crassissima (Blanchard) grubs in soil at varying and constant temperatures

Minling Zhang1, Robert Crocker1, Richard W. Mankin2, Kathy L. Flanders3, and Jamee Lee Brandhorst-Hubbard4. (1) Texas A&M University, REC-Dallas, 17360 Coit Rd, Dallas, TX, (2) USDA-ARS Center for Medical, Agricultural, and Veterinary Entomology, Postharvest Research Unit, P. O. Box 14565, Gainesville, FL, (3) Auburn University, Department of Entomology and Plant Pathology, 208 A Extension Hall, Auburn University, AL, (4) University of Kentucky, Department of Entomology, S225 Agricultural Science Center North, Lexington, KY

Activity patterns of white grubs were acoustically monitored in soil at varying and constant temperatures over multiple-day periods. Larger, 3rd-instars produced detectable sounds at higher rates than smaller, 2nd-instars on average, and the rates varied in relation to temperature but not photoperiod. The activity rates of the different grub species varied similarly with temperature. Distinctive temporal and amplitude patterns were identified that could be used to classify some sounds as feeding activity or general movement.

Species 1: Coleoptera Scarabaeidae Phyllophaga crinita (white grub)
Species 2: Coleoptera Scarabaeidae Cyclocephala lurida (white grub)
Species 3: Coleoptera Scarabaeidae Phyllophaga congrua (white grub)
Keywords: temperature, sound

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