Table 3 Crepipatella dilatata. Effects of the tidal cycle (12 h) and season (autumn, winter and spring) on radular activity (extrusions h−1) for (A) mucous ball removal, (B) transfer of mucous cord to the mouth and (C) substrate rasping in males
Source | df | MS | F | p |
|---|---|---|---|---|
(A) Mucous ball removal | ||||
Tidal cycle | 12 | 39.10 | 1.06 | 0.3918 |
Season | 2 | 4072.6 | 110.6 | 0.0005 |
Tidal cycle × season | 24 | 70.24 | 1.90 | 0.0073 |
Error | 275 | 36.8 | ||
(B) Transfer of mucous cord to mouth | ||||
Tidal cycle | 12 | 3115.8 | 5.58 | 0.0001 |
Season | 2 | 100,567.1 | 180.2 | 0.0001 |
Tidal cycle × season | 24 | 2490.8 | 4.46 | 0.0001 |
Error | 275 | 557.8 | ||
(C) Substrate rasping | ||||
Tidal cycle | 12 | 2643.1 | 1.12 | 0.3396 |
Season | 2 | 31,468.6 | 15.31 | 0.0511 |
Tidal cycle × season | 24 | 4691.1 | 2.00 | 0.0054 |
Error | 275 | 2346 | ||