Antitropical distributions and species delimitation in a group of ophiocomid brittle stars (Echinodermata: Ophiuroidea: Ophiocomidae) Naughton,KM, O'Hara,TD, Appleton,B and Cisternas,PA 2014, Antitropical distributions and species delimitation in a group of ophiocomid brittle stars (Echinodermata: Ophiuroidea: Ophiocomidae), Molecular phylogenetics and evolution, vol. 78, no. 1, pp. 232-244, doi: 10.1016/j.ympev.2014.05.020. Attached Files Name Description MIMEType Size Downloads Title Antitropical distributions and species delimitation in a group of ophiocomid brittle stars (Echinodermata: Ophiuroidea: Ophiocomidae) Author(s) Naughton,KM O'Hara,TD Appleton,B Cisternas,PA Journal name Molecular phylogenetics and evolution Volume number 78 Issue number 1 Start page 232 End page 244 Publisher Elsevier Place of publication Maryland Heights, MO Publication date 2014-09 ISSN 1055-7903 1095-9513 Keyword(s) Antitropical Cryptic species Molecular Ophiuroid Phylogeny Summary In this paper we examine the phylogeny and biogeography of the temperate genera of the Ophiocomidae (Echinodermata: Ophiuroidea) which have an interesting asymmetrical anti-tropical distribution, with two genera (Ophiocomina and Ophiopteris) previously considered to have a separate species in both the North and South hemispheres, and the third (Clarkcoma) diversifying in the southern Australian/New Zealand region. Our phylogeny, generated from one mitochondrial and two nuclear markers, revealed that Ophiopteris is sister to a mixed Ophiocomina/. Clarkcoma clade. Ophiocomina was polyphyletic, with O. nigra and an undescribed species from the South Atlantic Ocean sister to a clade including Clarkcoma species and O. australis. The phylogeny also revealed a number of recently diverged lineages occurring within Clarkcoma, some of which are considered to be cryptic species due to the similarity in morphology combined with the apparent absence of interbreeding in a sympatric distribution, while the status of others is less certain. The phylogeny provides support for two transequatorial events in the group under study. A molecular clock analysis places both events in the middle to late Miocene. The analysis excludes a tectonic vicariance hypothesis for the antitropical distribution associated with the breakup of Pangaea and also excludes the hypothesis of more recent gene flow associated with Plio/Pleistocene glacial cycling. © 2014 Elsevier Inc. Language eng DOI 10.1016/j.ympev.2014.05.020 Field of Research 060411 Population, Ecological and Evolutionary Genetics Socio Economic Objective 960808 Marine Flora, Fauna and Biodiversity HERDC Research category C1.1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2014, Elsevier Persistent URL http://hdl.handle.net/10536/DRO/DU:30070310 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Life and Environmental Sciences Related Links Link Description Connect to Elements publication management system Go to link with your DU access privileges   Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Fri, 06 Mar 2015, 08:27:06 EST Fri, 06 Mar 2015, 09:51:16 EST Mon, 09 Mar 2015, 07:19:58 EST Wed, 25 Mar 2015, 12:01:00 EST Thu, 26 Mar 2015, 05:07:38 EST Fri, 27 Mar 2015, 10:12:01 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 16 times in Scopus Search Google Scholar Access Statistics: 484 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Fri, 06 Mar 2015, 08:27:06 EST