Show simple item record Fiorentino, Viviana Manganelli, Giuseppe Giusti, Folco Tiedemann, Ralph Ketmaier, Valerio 2012-10-10T17:59:50Z 2012-10-10T17:59:50Z 2012-11-19
dc.identifier doi:10.5061/dryad.v84jr
dc.identifier.citation Fiorentino V, Manganelli G, Giusti F, Tiedemann R, Ketmaier V (2012) A question of time: the land snail Murella muralis (Gastropoda: Pulmonata) reveals constrains to past ecological speciation. Molecular Ecology 22(1): 170-186.
dc.description The lively debate about speciation currently focuses on the relative importance of factors driving population differentiation. While many studies are increasingly producing results on the importance of selection, little is known about the interaction between drift and selection. Moreover there is still little knowledge on the spatial-temporal scales at which speciation occurs, i.e. arrangement of habitat patches, abruptness of habitat transitions, climate and habitat changes interacting with selective forces. To investigate these questions, we quantified variation on a fine geographical scale analysing morphological (shell) and genetic datasets coupled with environmental data in the land snail Murella muralis, endemic to the Mediterranean island of Sicily. Analysis of a fragment of the mitochondrial DNA Cytochrome Oxidase I gene (COI) and eight nuclear microsatellite loci showed that genetic variation is highly structured at a very fine spatial scale by local palaeogeographical events and historical population dynamics. Molecular clock estimates, calibrated here specifically for Tyrrhenian land snails, provided a framework of palaeogeographical events responsible for the observed geographical variations and migration routes. Finally, we showed for the first time well documented lines of evidences of selection in the past, which explains divergence of land snail shell shapes. We suggest that time and palaeogeographical history acted as constraints in the progress along the ecological speciation continuum. Our study shows that testing for correlation among palaeogeography, morphology and genetic data on a fine geographical scale provides information fundamental for a detailed understanding of ecological speciation processes.
dc.relation.haspart doi:10.5061/dryad.v84jr/1
dc.relation.haspart doi:10.5061/dryad.v84jr/2
dc.relation.haspart doi:10.5061/dryad.v84jr/3
dc.relation.isreferencedby doi:10.1111/mec.12107
dc.relation.isreferencedby PMID:23163429
dc.subject Molluscs
dc.subject Phylogeography
dc.subject Population Genetics - Empirical
dc.subject Speciation
dc.title Data from: A question of time: the land snail Murella muralis (Gastropoda: Pulmonata) reveals constrains to past ecological speciation
dc.type Article *
dwc.ScientificName Murella muralis
dc.contributor.correspondingAuthor Fiorentino, Viviana
prism.publicationName Molecular Ecology

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