THE INHERITANCE OF SOME CHARACTERS IN CEPAEA HORTENSIS AND CEPAEA NEMORALIS (GASTROPODA)

The inheritance of some characters in Cepaea hortensis and Cepaea nemoralis (Gastropoda).

N recent years the remarkable polymorphism of snails of the genus Cepaea IHeld has continued to attract considerable attention. The variation from place to place in the proportions of the different phenotypes has proved to be useful material for the study of evolution in natural populations (CAIN and SHEPPARD 1950, 1954; CLARKE 1960; CLARKE and MURRAY 1962; LAMOTTE 1951, 1959; SCHNETTER 195 1 ;...

Cepaea hortenSiS (O. F. Müller, 1774) (MOllusCa: GastrOpODa) IN CrOatIa?

Candidate genes for shell colour polymorphism in Cepaea nemoralis

The characteristic ground colour and banding patterns on shells of the land snail Cepaea nemoralis form a classic study system for genetics and adaptation as it varies widely between individuals. We use RNAseq analysis to identify candidate genes underlying this polymorphism. We sequenced cDNA from the foot and the mantle (the shell-producing tissue) of four individuals of two phenotypes and pr...

RAD-Seq derived markers flank the shell colour and banding loci of the Cepaea nemoralis supergene

Studies on the classic shell colour and banding polymorphism of the land snail Cepaea played a crucial role in establishing the importance of natural selection in maintaining morphological variation. Cepaea is also a pre-eminent model for ecological genetics because the outward colour and banding phenotype is entirely genetically determined, primarily by a 'supergene' of at least five loci. Unf...

History or current selection? A molecular analysis of 'area effects' in the land snail Cepaea nemoralis.

We have used molecular variation in microsatellite and mitochondrial DNA to throw light on the origins of enigmatic geographical patterns, known as 'area effects', in the shell polymorphisms of the land snail Cepaea nemoralis. Our aim was to assess the relative importance of recent selection and historical events in the formation of these patterns. On the Marlborough Downs in Wiltshire, England...