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

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posted on 2023-05-17, 00:51 authored by Christopher BurridgeChristopher Burridge, Adam SmolenskiAdam 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

Publication title

New Zealand Journal of Marine and Freshwater Research

Volume

37

Pagination

223-230

ISSN

0028-8330

Department/School

School of Natural Sciences

Publisher

Sir Publishing

Place of publication

Po Box 399, Wellington, New Zealand

Rights statement

© The Royal Society of New Zealand 2003

Repository Status

  • Open

Socio-economic Objectives

Marine biodiversity

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