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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.

Item Type:	Refereed Article
Keywords:	microsatellite; homoplasy; populationgenetics; stock structure; Nemadactylus macropterus
Research Division:	Biological Sciences
Research Group:	Genetics
Research Field:	Genetics not elsewhere classified
Objective Division:	Environmental Management
Objective Group:	Marine systems and management
Objective Field:	Marine biodiversity
UTAS Author:	Burridge, CP (Associate Professor Christopher Burridge)
UTAS Author:	Smolenski, AJ (Mr Adam Smolenski)
ID Code:	59491
Year Published:	2003
Web of Science® Times Cited:	11
Deposited By:	Zoology
Deposited On:	2009-12-03
Last Modified:	2009-12-10
Downloads:	451 View Download Statistics