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dc.contributor.authorPonniah, Marken_US
dc.contributor.authorHughes, Janeen_US
dc.date.accessioned2017-05-03T12:53:06Z
dc.date.available2017-05-03T12:53:06Z
dc.date.issued2006en_US
dc.date.modified2009-09-24T05:52:36Z
dc.identifier.issn13231650en_US
dc.identifier.doi10.1071/MF05172en_AU
dc.identifier.urihttp://hdl.handle.net/10072/14477
dc.description.abstractPhylogenetic evidence suggested that the Queensland Euastacus diversified through 'simultaneous vicariance', where the range of a widespread ancestral Euastacus receded to tops of mountains with the Pliocene warming of the continent and subsequent isolation lead to speciation. Implicit in the simultaneous vicariance hypothesis are three postulates on ancestral history: (1) warm temperatures were effective barriers to ancestral gene flow; (2) the ancestral Euastacus had an extensive contiguous distribution; and (3) there was a single vicariant event associated with Pliocene warming. It is argued that if there was interspecific diversification due to simultaneous vicariance then, within extant species, there are three predictions on current population structure. First, lowland areas, even those connected by streams, would be barriers to contemporary dispersal. Second, there would be contemporary dispersal between catchments covered by mesic rainforests. Third, there would have been recent Pleistocene intraspecific vicariant events. The population structure of E. robertsi, E. fleckeri, E. hystricosus and E. sulcatus was investigated with mtDNA and allozymes and it was found that the intraspecific data were consistent with these predictions. Furthermore, the Euastacus underwent limited range expansions during the cooler Pleistocene glacial cycles, and it is hypothesised that during cooler glacial periods, lowlands were still effective barriers to dispersal because of increased Pleistocene aridity.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherCSIRO Publishingen_US
dc.publisher.placeCollingwood, Vic.en_US
dc.publisher.urihttp://www.publish.csiro.au/nid/126.htmen_AU
dc.relation.ispartofstudentpublicationNen_AU
dc.relation.ispartofpagefrom349en_US
dc.relation.ispartofpageto362en_US
dc.relation.ispartofjournalMarine and Freshwater Researchen_US
dc.relation.ispartofvolume57en_US
dc.rights.retentionYen_AU
dc.subject.fieldofresearchcode270709en_US
dc.titleThe evolution of Queensland spiny mountain crayfish of the genus Euastacus. II. Investigating simultaneous vicariance with intraspecific genetic dataen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.date.issued2006
gro.hasfulltextNo Full Text


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