Table 1.

Effect of male ultrasound on mating success. (Mating success of muted males was significantly lower than that of intact or sham-operated males.)

male treatmenta	n	% matingb (no. of pairs mated)
intact	21	100 (21)
tymbal punctured	17	41 ( 7)
sham-operatedc	21	95 (20)

^aAll females were intact;

^bFisher's exact probability test, p < 0.0001;

^cmesothoracic coxae were punctured instead of tymbals.