Table 2. Change in interbeat intervals (IBI) in Scylla paramamosain in response to touch stimulus delivered to appendages.
| Appendage | Crab | Pre-test IBI: log10-transformed mean IBI (s) | Pre-test beat: log10-transformed IBI 95% confidence interval (s) | Test-beat: log10-transformed IBI (s) |
|---|---|---|---|---|
| Swimming leg | A (male) | 0.139 | 0.063–215 | 0.097 |
| B (female) | 0.170 | 0.125–215 | 0.146 | |
| C (female) | 0.210 | 0.181–239 | 0.193 | |
| Walking leg | A | 0.337 | 0.287–387 | 0.782* |
| B | 0.307 | 0.237–377 | 0.646* | |
| C | 0.329 | 0.287–371 | 0.868* | |
| Claw | A | 0.323 | 0.264–382 | 0.627* |
| B | 0.330 | 0.316–344 | 0.658* | |
| C | 0.359 | 0.326–392 | 0.718* | |
| Antenna | A | 0.226 | 0.163–289 | 0.679* |
| B | 0.244 | 0.219–269 | 0.668* | |
| C | 0.245 | 0.213–277 | 0.765* | |
| Antennule | A | 0.139 | 0.063–215 | 0.124 |
| B | 0.244 | 0.197–251 | 0.220 | |
| C | 0.184 | 0.115–253 | 0.225 | |
| Mouthparts | A | 0.251 | 0.205–297 | 0.684* |
| B | 0.319 | 0.289–349 | 0.647* | |
| C | 0.154 | 0.126–182 | 0.563* |
Notes.
The stimulation was triplicated but cardiac responses were shown only for the first single touch. Mean pre-test IBI was calculated for 10 pre-test IBI.
*
Denotes significantly larger test-beat interval than 95% confidence interval calculated using 10 pre-test IBIs.