Predation of scallop Chlamys farreri by crab Charybdis japonica
日本蟳捕食栉孔扇贝机制的初步研究

Predation of scallop Chlamys farreri by crab Charybdis japonica was examined in situ and in the laboratory at different water temperatures. It was found that the predation rate of small scallop (shell height < 5.0 cm) was increased with increasing water temperature, and the predation was negligible either when the shell height of scallop exceeded 5.9 cm or when the water temperature was blow 10°C. In situ predation rate was higher than that in the laboratory at the same seawater temperature; however, the Q10 values were similar at the two different situations. Our results indicate that the best way to enhance the survival of the bottom cultured C. farreri is to seed large scallops in autumn and winter, when the water temperature is low, and some mussels should also be put in the culture area as a sacrifice to reduce the predation of scallop by crab.