Valve Gape Response to Turbidity in Two Freshwater Bivalves (Corbicula fluminea and Lampsilis radiata)

ABSTRACT In a laboratory study with a simulated storm event, we found a significant difference (p<0.05) in valve gape response to the turbidity between Corbicula fluminea and Lampsilis radiata. Valves of C. fluminea opened more intensively during the peak turbidity period and closed significantly more during a following chronic turbidity period. L. radiata exhibited little change in valve gape response with change in turbidity.