GENETIC VARIATION IN THE LAND SNAIL ISOGNOMOSTOMA ISOGNOMOSTOMA(GASTROPODA: PULMONATA: HELICIDAE)

摘要

Genetic and phenotypic variation in 13 populations of Isognomostoma isognomostoma (Schroter, 1784)from central and peripheral areas of its distribution range in central Europe was estimated by means of allozyme electrophoresis at 11 loci and a morphometric analysis of six shell and 12 genital tract measurements. Because of the effects of genetic drift and inbreeding, which may lead to rapid genetic differ- Entiation, peripheral may play an important role in diversification and speciation.