Mitochondrial 12S rRNA sequences support the existence of a third species of freshwater blackfish (Percicthyidae: Gadopsis) from south-eastern Australia Miller, Adam, Waggy, Gretchen, Ryan, Stephen and Austin, Christopher 2004, Mitochondrial 12S rRNA sequences support the existence of a third species of freshwater blackfish (Percicthyidae: Gadopsis) from south-eastern Australia, Memoirs of Museum Victoria, vol. 61, no. 2, pp. 121-127. Attached Files Name Description MIMEType Size Downloads Title Mitochondrial 12S rRNA sequences support the existence of a third species of freshwater blackfish (Percicthyidae: Gadopsis) from south-eastern Australia Formatted title Mitochondrial 12S rRNA sequences support the existence of a third species of freshwater blackfish (Percicthyidae: Gadopsis) from south-eastern Australia Author(s) Miller, Adam orcid.org/0000-0002-1632-7206 Waggy, Gretchen Ryan, Stephen Austin, Christopher orcid.org/0000-0003-1848-6267 Journal name Memoirs of Museum Victoria Volume number 61 Issue number 2 Start page 121 End page 127 Publisher Museum Victoria Place of publication Melbourne, Vic. Publication date 2004 ISSN 1447-2546 1447-2554 Keyword(s) Mitochondrial rRNA taxonomy blackfish Percicthyidae Gadopsis Australia Summary Fish of the genus Gadopsis are a distinctive component of the freshwater fish fauna of south-eastern Australia. Gadopsis marmoratus and G. bispinosus are the only two species recognised within the genus, with the former of uncertain taxonomic status, as it is thought to be composed of at least two distinct geographical forms based on morphological and allozyme data. The objective of this study was to investigate DNA sequence divergence in Gadopsis, especially in the western portion of its distribution, using an approximately 400 base pair fragment of the mitochondrial small subunit 12S rRNA gene region in order to reassess the taxonomy of the genus. Individuals from 11 locations were sequenced and confirm that G. marmoratus and G. bispinosus are genetically distinct, and further that the G. marmoratus complex consists of two divergent clades representing the previously identified northern and southern forms. The degree of divergence between the three Gadopsis clades was similar (5–6% nucleotide substitutions), suggesting that they diverged from a common ancestor at approximately the same period in geological time. These results are consistent with previous allozyme studies and highlight the usefulness of mitochondrial DNA data coupled with allozyme information for clarifying taxonomic boundaries in morphologically conservative aquatic organisms. Language eng Field of Research 060399 Evolutionary Biology not elsewhere classified Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences HERDC Research category C1 Refereed article in a scholarly journal Persistent URL http://hdl.handle.net/10536/DRO/DU:30002776 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Ecology and Environment Centre for Integrative Ecology Related Links Link Description 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 Mon, 22 Apr 2013, 11:43:32 EST Tue, 23 Apr 2013, 09:52:37 EST Tue, 23 Apr 2013, 09:53:27 EST Fri, 13 Jun 2014, 22:45:26 EST Mon, 19 Jan 2015, 10:12:16 EST Fri, 06 Feb 2015, 10:10:04 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 985 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Mon, 07 Jul 2008, 08:34:10 EST