Fig. 2.

Tension records from developing male and female larynges. Adult males typically produce 100% transient tension, while females typically produce mostly maintained tension with small transients superimposed. Tension (t) is sexually monomorphic at the end of metamorphosis and during early postmetamorphic development. The percentage of transient tension then increases in males but remains unchanged in females. Calibration bar: 50 ms.

male	female
a: end of metamorphosis, 0% t, 5 mg larynx	b: end of metamorphosis, 0% t, 5 mg larynx
c: early postmetamorphic, 27% t, 53 mg larynx	d: early postmetamorphic, 21% t, 59 mg larynx
e: late postmetamorphic, 67% t, 108 mg larynx	f: late postmetamorphic, 12% t, 113 mg larynx
g: mature, 100% t, 252 mg larynx	h: mature, 18% t, 240 mg larynx