Etude de trois populations de Viviparus malleatus (Reeve) (Gastropoda, Prosobranchia) de la région de Montréal. I. Croissance, fécondité, biomasse et production annuelle

Ecological and biological similarities and differences were observed in these three populations. These variations may partially be explained by the physical and chemical characteristics of the waters in which the specimens were collected. They may also be due to trophic relations which will be described in another paper.