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Fig. 5. Effects of male experimental manipulation on power spectra of idle
displays. (i) Oscillogram of idle display; (ii) power spectra of idle display;
(iii) experimental treatment. (A) Control treatment. (B) Palpal treatment.
Experimental treatment consisted of waxing the tibio-cymbial joint of the
palp, rendering the joint immovable. Percussive components were unaffected
while stridulatory components were attenuated following manipulation. (C)
Abdominal treatment. Experimental treatment consisted of waxing the
cephalothorax–abdomen joint, rendering the joint immovable. No seismic
components were affected following manipulation. (D) Palpal and abdominal
treatment. Experimental treatment consisted of waxing the tibio-cymbial joint
of the palp and waxing the cephalothorax–abdomen joint, rendering both
joints immovable relative to each other. Percussive components were unaffected
while stridulatory/tremulation components were attenuated following
manipulation.
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