Physiological energetics of the zebra musselDreissena polymorphain lakes II. Food uptake and gross growth efficiency

摘要

Food uptake ofDreissena polymorphafrom two shallow water sites and one site at a 9 m depth in lakes was monitored over the course of 1 1/2 years. Feeding was characterized by the filtration capacity and ingestion capacity (i.e.the unrestricted maximum rates) at ambient temperature. The available food was estimated as seston dry weight, as seston ash free dry weight and as seston volume (sum of the volumes of the particles in the water column).