0000000000937085

AUTHOR

Nerida G. Wilson

showing 1 related works from this author

Contrasting biogeographical patterns in Margarella (Gastropoda: Calliostomatidae: Margarellinae) across the Antarctic Polar Front

2021

International audience; Members of the trochoidean genus Margarella (Calliostomatidae) are broadly distributed across Antarctic and sub-Antarctic ecosystems. Here we used novel mitochondrial and nuclear gene sequences to clarify species boundaries and phylogenetic relationships among seven nominal species distributed on either side of the Antarctic Polar Front (APF). Molecular reconstructions and species-delimitation analyses recognized only four species: M. antarctica (the Antarctic Peninsula), M. achilles (endemic to South Georgia), M. steineni (South Georgia and Crozet Island) and the morphologically variable M. violacea (=M. expansa, M. porcellana and M. pruinosa), with populations in s…

0106 biological sciences0301 basic medicineTime FactorsAntarctic Polar FrontGastropodalong-distance dispersalAntarctic RegionsBiology010603 evolutionary biology01 natural sciencesDNA MitochondrialPorcellanaCalliostomatidae03 medical and health sciencesSpecies SpecificityGastropodaGeneticsAnimals14. Life underwaterGlacial periodMargarellaSouthern OceanMolecular BiologyEcology Evolution Behavior and SystematicsPhylogenyPolar frontGenetic diversityPolymorphism GeneticEcologyBayes TheoremDNA15. Life on landSouth Americabiology.organism_classificationbenthic-protected developmentraftingPhylogeographyMESH: Océan Austral front polaire antarctique dispersion à longue distance développement protégé benthique incubation rafting Margarella030104 developmental biologyBiological dispersalTaxonomy (biology)[SDE.BE]Environmental Sciences/Biodiversity and Ecology
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