2012
Variation in the shell colour and banding polymorphism of Cepaea nemoralis (L.) in rular areas around Wrocław
POKRYSZKO, Beata M.; Robert A. D. CAMERON and Michal HORSÁKBasic information
Original name
Variation in the shell colour and banding polymorphism of Cepaea nemoralis (L.) in rular areas around Wrocław
Authors
POKRYSZKO, Beata M. (616 Poland); Robert A. D. CAMERON (826 United Kingdom of Great Britain and Northern Ireland) and Michal HORSÁK (203 Czech Republic, guarantor, belonging to the institution)
Edition
Folia Malacologica, 2012, 1506-7629
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10600 1.6 Biological sciences
Country of publisher
Poland
Confidentiality degree
is not subject to a state or trade secret
RIV identification code
RIV/00216224:14310/12:00060190
Organization unit
Faculty of Science
Keywords in English
terrestrial snails; polymorphism; Cepaea nemoralis; rural populations
Changed: 7/4/2015 13:22, Mgr. Lucie Jarošová, DiS.
Abstract
In the original language
105 samples of Cepaea nemoralis (L.) were made in rural locations around the city of Wroclaw in 2008-10. Variation in the shell colour and banding polymorphism showed no relationship to habitat, nor were there any large-scale geographical patterns. In some morphs, there were strong frequency correlations between samples close to one another, but these never extended beyond 20 km, and usually involved much shorter distances. Relative to populations within the city, these populations vary more among themselves, but are individually less polymorphic. Linkage disequilibria in common between city and country suggest a common origin. These results suggest that rural populations have a more recent origin, and that they are more isolated from one another than those in the city. A process of recent passive dispersal by humans, with some local spread appears to account for the pattern of variation observed.