Fig. 3. Effects of male abdominal immobilization on power spectra of different seismic signals. (A) Buzz signal; (B) scrape signal; (C) thump signal. Panels i-iii represent mean power spectra for one individual during the control, experimental and recovery treatments, respectively. Experimental treatment consisted of waxing the cephalothorax to the abdomen, rendering body segments immovable relative to each other. Recovery treatment consisted of removing the wax from the animal.

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