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dc.contributor.authorCarini, G
dc.contributor.authorHughes, JM
dc.contributor.editorRichard A Nichols (Managing Editor)
dc.date.accessioned2017-05-03T11:06:51Z
dc.date.available2017-05-03T11:06:51Z
dc.date.issued2004
dc.date.modified2009-01-20T06:10:55Z
dc.identifier.issn0018-067X
dc.identifier.doi10.1038/sj.hdy.6800510
dc.identifier.urihttp://hdl.handle.net/10072/5227
dc.description.abstractRivers of Western Queensland, Australia, represent a discontinuous and variable aquatic habitat for the freshwater fauna of the region. Rivers periodically fluctuate between being highly fragmented, with numerous disconnected waterholes and ephemeral channels, and being highly connected by a dominant system of anastomosing channels. We used mitochondrial sequences to investigate the genetic structure and inferred patterns of dispersal associated with this flow regime for the freshwater prawn, Macrobrachium australiense (Decapoda: Palaemonidae), sampling 28 localities throughout eight catchments. Based on a 505 base pair fragment of mitochondrial cytochrome c oxidase subunit I, we identified 98 haplotypes in a sample of 402 individuals. The haplotypes clustered into two main clades corresponding geographically to the major drainages: the Lake Eyre and Murray-Darling basins. Populations of M. australiense inhabiting the two basins appear to have diverged around 800 000 years ago (estimated sequence divergence of 1.6%). Analysis of population differentiation indicated contemporary high levels of genetic subdivision and restricted gene flow among populations within and among catchments. Phylogenetic analysis detected a series of historical range expansions in the region and we suggest that climate fluctuations during the Pleistocene have resulted in extensive floods that have promoted historical movements of aquatic organisms across catchment boundaries.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoen_AU
dc.publisherNature Publishing Group
dc.publisher.placeLondon, UK
dc.publisher.urihttp://www.nature.com/hdy/index.html
dc.relation.ispartofpagefrom350
dc.relation.ispartofpageto363
dc.relation.ispartofjournalHeredity
dc.relation.ispartofvolume93
dc.subject.fieldofresearchEvolutionary Biology
dc.subject.fieldofresearchGenetics
dc.subject.fieldofresearchcode0603
dc.subject.fieldofresearchcode0604
dc.titlePopulation structure of Macrobrachium australiense (Decapoda: Palaemonidae) in Western Queensland, Australia: the role of contemporary and historical processes
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2004
gro.hasfulltextNo Full Text
gro.griffith.authorHughes, Jane M.
gro.griffith.authorCarini, Giovannella


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