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Lack of genetic divergence found with microsatellite DNA markers in the tarakihi Nemadactylus macropterus

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journal contribution
posted on 2003-06-01, 00:00 authored by C Burridge, A Smolenski
Three classes of molecular markers are commonly employed during population genetic studies of marine taxa: allozymes, mitochondrial DNA (mtDNA), and microsatellite DNA. These markers differ in their levels of polymorphism, and the ease and cost of their application. Nemadactylus macropterus is a commercially important marine fish from New Zealand and southern Australia that has been the subject of genetic (allozyme, mtDNA) and non-genetic (otolith microchemistry, larval advection) studies of stock structure. We collected microsatellite DNA data from this species to compare the utility of these molecular markers with those genetic methods previously applied to N. macropterus. Microsatellites did not indicate significant divergence among Australian samples, or between Australian and New Zealand samples. The latter is incongruent with the allozyme and mtDNA studies, and it is suggested that allelic homoplasy has hindered the resolution of population structure when using microsatellites.

History

Journal

New Zealand journal of marine and freshwater research

Volume

37

Issue

2

Pagination

223 - 230

Publisher

Taylor & Francis Australasia

Location

Melbourne, Vic.

ISSN

0028-8330

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2003, The Royal Society of New Zealand

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