Figure 5From: Dynamics of natural populations of the dertitivorous mudsnail Potamopyrgus antipodarum (Gray) (Hydrobiidae) in two interconnected Lakes differing in trophic stateDevelopment of the populations of in the microcosms, according to the six size classes (in mm). 1. Snails, sediment and water from meso-olgotrophic Lake I. 2. Snails, sediment and water from eutrophic Lake II.Back to article page