ABSTRACT

We investigated the feeding response of zebra and quagga mussels to Microcystis aeruginosa strains from culture collection and from natural seston from Saginaw Bay (Lake Huron), western Lake Erie, and enclosures from Gull Lake, an inland lake in Michigan. These experiments were done to evaluate the roles of strain identity, toxin concentration (microcystin), colony size, and environmental phosphorus concentrations as they affect ingestion or selective rejection of Microcystis in pseudofeces and potential Microcystis bloom promotion through the selective-rejection process.