INTERACTIVE EFFECT OF VELOCITY AND SESTON CONCENTRATION ON GIANT SCALLOP FEEDING INHIBITION

Short-term feeding experiments with starved giant scallops Placopecten magellanicus Gmelin show that there is an interaction between ambient velocities and cell densities of a preferred unialgal diet offered, s uch that at high concentrations, flow-inhibited feeding persists at hi gher velocities. This result implies that there is homoeorheostatic co ntrol of feeding in the giant scallop involving the recognition of cel l density, as well as ambient velocities around the scallop.