Mitochondrial DNA and allozymes reveal high dispersal abilities and historical movement across drainage boundaries in two species of freshwater fishes from inland rivers in Queensland, Australia
This study used allozymes and mtDNA variation to test that: 1) populations of two fish species, Nematolosa erebi and Retropinna semoni, in lowland rivers in central Australia were highly connected within drainages, 2) populations in different drainages were highly differentiated and 3) there was evi...
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Published in | Journal of fish biology Vol. 68; no. SB; pp. 270 - 291 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK; Malden, USA
Blackwell Publishing Ltd
01.06.2006
Blackwell |
Subjects | |
Online Access | Get full text |
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Summary: | This study used allozymes and mtDNA variation to test that: 1) populations of two fish species, Nematolosa erebi and Retropinna semoni, in lowland rivers in central Australia were highly connected within drainages, 2) populations in different drainages were highly differentiated and 3) there was evidence of historical connections between two major lowland drainages in inland Australia. Levels of genetic differentiation among populations within drainages were low, but still statistically significant, indicating that populations were not as highly connected as had been predicted. Populations from the Murray–Darling and the Lake Eyre drainages were highly differentiated, indicating no contemporary dispersal across drainage boundaries. Both species showed evidence of historical connections between the two drainage basins, although estimates of the time that these last occurred differed between the two species. Nematolosa erebi populations from the two drainages were estimated to have been separated c. 150 000 years ago, whereas populations of R. semoni, were estimated to have been separated c. 1.5 million years ago. |
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Bibliography: | istex:0AC4B1CA3295F3BBB54A4A0C00EF973E9A5B2937 ark:/67375/WNG-8FVX8NQZ-8 ArticleID:JFB1073 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0022-1112 1095-8649 |
DOI: | 10.1111/j.0022-1112.2006.01073.x |