Density and variability of dinucleotide microsatellites in the parthenogenetic polyploid snail Melanoides tuberculata |
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| Authors: | S. SAMADI,E. ARTIGUEBIELLE,A. ESTOUP,J.-P. POINTIER,J.-F. SILVAIN,J. HELLER,M.-L. CARIOU,& P. JARNE |
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| Affiliation: | Génétique &Environnement –CC065, Institut des Sciences de l'Evolution, UniversitéMontpellier II, Place Bataillon, 34095 Montpellier cedex 5, France,,;Populations, Génétique et Evolution, CNRS, 91198 Gif-sur-Yvette cedex, France,,;Génétique des poissons, CRJ-INRA, 78352 Jouy-en-Josas, France,,;Centre de Biologie et Ecologie Tropicale et Méditerranéenne, EPHE, UMR 5555 du CNRS, Avenue de Villeneuve, 66860 Perpignan cedex, France,,;ORSTOM, 209–213 rue Lafayette, 75480 Paris cedex 10, France,,;Department of Evolution, Systematics and Ecology, Hebrew University, Jerusalem 91904, Israel |
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| Abstract: | Characterization of microsatellites in the parthenogenetic polyploid snail Melanoides tuberculata revealed an unusual high density of dinucleotide repeats. Multiple banding patterns were obtained at these loci, and interpreted as a consequence of polyploidy. Microsatellite variability was low within, but high between, shell morphotypes. Genotypes were wholly transmitted from mothers to offspring. These results suggest that reproduction is strictly apomictic, and that shell morphotypes are genetic clones. |
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| Keywords: | freshwater snail microsatellites parthenogenesis polymorphism polyploidy |
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