INFLUENCE OF TURBIDITY ON SURVIVAL, GROWTH AND DISTRIBUTION OF LARVAL LAKE HERRING Coregonus artedii

Abstract

Influence of red-clay turbidity on survival, growth and distribution of larval lake herring, Coregonus artedii, was measured by holding post hatch larvae for 62 days at 9 levels of suspended solids varying from 2 to 50 FTU (1 to 29 ppm). The concentrations included the normal range in the red clay area of western Lake Superior. The bioassay was conducted in a continuous flow system with chambers designed to promote normal behavior and influence light levels between the surface and bottom.