Frog (N cocoon sections measured) . | 1 (7) . | 2 (4) . | 3 (2) . | 4 (7) . | 5 (5) . | 6 (2) . | Means ± s.e.m. (N=6 frogs) . |
---|---|---|---|---|---|---|---|
Number of cocoon layers | 106 | 99 | 102 | 81 | 91 | 229 | 118±22.5 |
Total cocoon thickness (μm) | 22.3 | 24.6 | 21.4 | 19.4 | 24.5 | 55.6 | 28.0±5.58 |
Maximum layer thickness (μm) | 2.55 | 0.94 | 1.12 | 1.65 | 1.28 | 1.46 | 1.5±0.23 |
Minimum layer thickness (μm) | 0.06 | 0.04 | 0.06 | 0.07 | 0.08 | 0.08 | 0.07±0.006 |
Mean layer thickness (μm) | 0.20 | 0.23 | 0.22 | 0.24 | 0.26 | 0.22 | 0.23±0.008 |
Median layer thickness (μm) | 0.15 | 0.19 | 0.19 | 0.18 | 0.20 | 0.18 | 0.18±0.007 |
Days aestivating (minimum rate)* | 303 | 283 | 292 | 232 | 260 | 655 | 337.5±64.3 |
Days aestivating (maximum rate)* | 530 | 495 | 510 | 405 | 455 | 1145 | 590±112.5 |
Frog (N cocoon sections measured) . | 1 (7) . | 2 (4) . | 3 (2) . | 4 (7) . | 5 (5) . | 6 (2) . | Means ± s.e.m. (N=6 frogs) . |
---|---|---|---|---|---|---|---|
Number of cocoon layers | 106 | 99 | 102 | 81 | 91 | 229 | 118±22.5 |
Total cocoon thickness (μm) | 22.3 | 24.6 | 21.4 | 19.4 | 24.5 | 55.6 | 28.0±5.58 |
Maximum layer thickness (μm) | 2.55 | 0.94 | 1.12 | 1.65 | 1.28 | 1.46 | 1.5±0.23 |
Minimum layer thickness (μm) | 0.06 | 0.04 | 0.06 | 0.07 | 0.08 | 0.08 | 0.07±0.006 |
Mean layer thickness (μm) | 0.20 | 0.23 | 0.22 | 0.24 | 0.26 | 0.22 | 0.23±0.008 |
Median layer thickness (μm) | 0.15 | 0.19 | 0.19 | 0.18 | 0.20 | 0.18 | 0.18±0.007 |
Days aestivating (minimum rate)* | 303 | 283 | 292 | 232 | 260 | 655 | 337.5±64.3 |
Days aestivating (maximum rate)* | 530 | 495 | 510 | 405 | 455 | 1145 | 590±112.5 |
Estimate based on rates of layer formation determined for Neobatrachus spp. (Withers,1995) at a minimum rate of 0.2 layers day−1 and a maximum rate of 0.35 layers day−1.