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Species delimitation and distribution in Aporometra (Crinoidea : Echinodermata): endemic Australian featherstars

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dc.contributor.author Helgen, Lauren E. en
dc.contributor.author Rouse, Greg W. en
dc.date.accessioned 2008-07-23T13:31:00Z
dc.date.available 2008-07-23T13:31:00Z
dc.date.issued 2006
dc.identifier.citation Helgen, Lauren E. and Rouse, Greg W. 2006. "<a href="https%3A%2F%2Frepository.si.edu%2Fhandle%2F10088%2F5423">Species delimitation and distribution in Aporometra (Crinoidea : Echinodermata): endemic Australian featherstars</a>." <em>Invertebrate Systematics</em>. 20 (3):395&ndash;414. <a href="https://doi.org/10.1002/ejoc.200500775">https://doi.org/10.1002/ejoc.200500775</a> en
dc.identifier.issn 1445-5226
dc.identifier.uri http://hdl.handle.net/10088/5423
dc.description.abstract Aporometra Clark, 1938, which belongs to the monotypic Aporometridae, is a crinoid genus endemic to temperate Australian waters. It has been described as being ?viviparous? and is among the smallest of comatulids. The small size of specimens, and poor morphological justifications for specific diagnoses have created uncertainty over the number of species in the genus and their distributions. This study identified a suite of characters using data from scanning electron microscopy and mtDNA sequencing (CO1 and ND2) to assess the number of species of Aporometra. Specimens were obtained from museums and collected from Western Australia, South Australia, Victoria and New South Wales. Type material was also examined when possible. Phylogenetic hypotheses were generated using maximum parsimony-based analyses of the separate and combined datasets. The results support the monophyly of Aporometra and the presence of two species, Aporometra wilsoni (Bell, 1888) and Aporometra occidentalis A. H. Clark, 1938, along the southern Australian coast. The status of the third nominal species, Aporometra paedophora (H. L. Clark, 1909), remains to be resolved, but it may be a junior synonym of A. wilsoni. Morphological diagnoses are reviewed. Aporometra occidentalis was only found in Western Australia, while A. wilsoni was found from Western Australia to Victoria. Phylogeographic differentiation between the western and southern populations of A. wilsoni is briefly discussed. en
dc.format.extent 719023 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.relation.ispartof Invertebrate Systematics en
dc.title Species delimitation and distribution in Aporometra (Crinoidea : Echinodermata): endemic Australian featherstars en
dc.type Journal Article en
dc.identifier.srbnumber 59940
dc.identifier.doi 10.1002/ejoc.200500775
rft.jtitle Invertebrate Systematics
rft.volume 20
rft.issue 3
rft.spage 395
rft.epage 414
dc.description.SIUnit NH-Entomology en
dc.description.SIUnit NMNH en
dc.citation.spage 395
dc.citation.epage 414

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