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dc.contributor.authorCarini, G
dc.contributor.authorHughes, JM
dc.date.accessioned2017-05-03T11:06:57Z
dc.date.available2017-05-03T11:06:57Z
dc.date.issued2006
dc.date.modified2009-01-20T06:12:49Z
dc.identifier.issn0024-4066
dc.identifier.doi10.1111/j.1095-8312.2006.00594.x
dc.identifier.urihttp://hdl.handle.net/10072/14465
dc.description.abstractPopulations of the Australian freshwater snail Notopala sublineata (Conrad, 1850) have declined rapidly over the last decade, but are still abundant in most river systems of Western Queensland. These rivers are characterized by the unpredictable and highly variable nature of their climatic and hydrological regimes, with episodic periods of very large flow and many periods of little or no flow. We used mitochondrial sequences and allozymes to investigate the genetic structure and infer patterns of dispersal of N. sublineata within this unique environment. We sampled 24 waterholes throughout the four major catchments of the Lake Eyre Basin. Based on a 457-bp fragment of the mitochondrial cytochrome oxidase subunit I gene, we identified 55 haplotypes in a sample of 256 individuals. Both nuclear and mitochondrial genetic datasets indicated high levels of genetic subdivision and restricted gene flow among populations within and among catchments. The mitochondrial haplotypes clustered into two main geographical clades, corresponding with two groups of adjacent catchments: Cooper-Bulloo and Diamantina-Georgina, which appear to have diverged 300 000 years ago. Populations of N. sublineata within these adjacent catchments seem to have diverged relatively recently, roughly 130 000 years ago. Contemporary dispersal seems to be absent between catchments but we suggest that climate fluctuations during the Pleistocene resulted in extensive floods that promoted historical movement of aquatic organisms across catchment boundaries.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherPublished for the Linnean Society of London by Blackwell Publishing Ltd
dc.publisher.placeOxford, England
dc.publisher.urihttp://www.wiley.com/bw/journal.asp?ref=0024-4066
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto16
dc.relation.ispartofjournalBiological Journal of the Linnean Society
dc.relation.ispartofvolume88
dc.rights.retentionY
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchcode31
dc.titleSubdivided population structure and phylogeography of an endangered freshwater snail, Notopala sublineata (Conrad, 1850) (Gastropoda: Viviparidae), in Western Queensland, Australia
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2006
gro.hasfulltextNo Full Text
gro.griffith.authorHughes, Jane M.


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