Appendix I. A table showing the number of clams (Venerupis philippinarum and Protothaca staminea) eaten by each replicate adult red rock crab, Cancer productus, in prey choice trials.
Crab (No.) Crab size (mm) Crab sex Elapsed time (d) No. trials (No. clams eaten) Venerupis philippinarum Protothaca staminea ![]()
1 155 f 34 12 8 4 1.33 2 158 f 48 15 10 5 1.67 3 160 f 33 16 13 3 6.25* 4 145 m 36 18 10 8 0.22 5 148 f 13 13 7 6 0.077 6 145 f 22 16 10 6 1
7 142 f 12 12 7 5 0.33 8 160 f 52 12 8 4 1.33 9 141 m 40 14 7 7 0
10 135 m 31 13 8 5 0.69 Total
, df =10
12.91 Pooled
, df = 1
141 88 53 8.69 Heterogeneity
, df = 9
4.22ns
a = 0.05, df = 9 = 16.92
Therefore, pooling justified. Pooled
C2 = 8.20**, df =1
Overall Proportion Selected
0.624 0.376 Notes: Crab size is maximum carapace width in mm. Elapsed time is the number of days each crab took to eat the total number of clams documented.
* P <0.05; ** P < 0.005; ns not significant