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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