Pages
pp. 149 -
156

The author presents the results of the study on intrapopulation variability in the egg cluster morphology of Planorbarius corneus (Linnaeus, 1758) in a small lake near Smolensk. The changes in the basic characteristics of syncapsules are very considerable. The most constant feature is the egg capsule size, but its limits and mean values also vary both in one specimen and in different molluscs and coincide with the variation within the genus Planorbarius Dumeril, 1806. Thus, the use of characters of egg clusters for recognition of species is impossible.

Внутрипопуляционная изменчивость морфологии кладок яиц Planorbarius corneus (Linnaeus, 1758) (Gastropoda, Pulmonata)
Березкина Г. В.;