Deep structure, long-distance migration and admixture in the colour polymorphic land snail Cepaea nemoralis.

ABSTRACT: Although snails of the genus Cepaea have historically been important in studying colour polymorphism, an ongoing issue is that there is a lack of knowledge of the underlying genetics of the polymorphism, as well as an absence of genomic data to put findings in context. We, therefore, used phylogenomic methods to begin to investigate the post-glacial history of Cepaea nemoralis, with a long-term aim to understand the roles that selection and drift have in determining both European-wide and local patterns of colour polymorphism. By combining prior and new mitochondrial DNA data from over 1500 individuals with ddRAD genomic data from representative individuals across Europe, we show that patterns of differentiation are primarily due to multiple deeply diverged populations of snails. Minimally

SUBMITTER: Ramos-Gonzalez D 

PROVIDER: S-EPMC9541890 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature