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RESEARCH ARTICLE
Contents Vol 59(6)

Genetic stock structure of blue-eye trevalla (Hyperoglyphe antarctica) and warehous (Seriolella brama and Seriolella punctata) in south-eastern Australian waters

Nick Robinson A I , Alexandra Skinner A B D , Lakshmi Sethuraman A , Helen McPartlan A , Neil Murray B , Ian Knuckey C E , David C. Smith C F , Jeremy Hindell C G and Sonia Talman C H
+ Author Affiliations
- Author Affiliations

A Animal Genetics and Genomics, Department of Primary Industries, Attwood, Vic. 3049, Australia.

B Genetics Department, LaTrobe University, Bundoora, Vic. 3083, Australia.

C Marine and Freshwater Systems, Fisheries Victoria, Queenscliff, Vic. 3225, Australia.

D Present address: Event number K401, Scott Base Antarctica, Private Bag 4745, Christchurch, New Zealand.

E Present address: Fishwell Consulting, Queenscliff, Vic. 3225, Australia.

F Present address: CSIRO Marine and Atmospheric Research, Hobart, Tas. 7001, Australia.

G Present address: Arthur Rylah Institute, Department of Sustainability and Environment, Heidelberg, Vic. 3084, Australia.

H Present address: Fisheries Victoria, Melbourne, Vic. 3001, Australia.

I Corresponding author. Email: nick.robinson@dpi.vic.gov.au

Marine and Freshwater Research 59(6) 502-514 https://doi.org/10.1071/MF07175
Submitted: 1 October 2007  Accepted: 8 April 2008   Published: 19 June 2008

Abstract

Blue-eye trevalla (Hyperoglyphe antarctica), blue warehou (Seriolella brama) and silver warehou (Seriolella punctata) from the family Centrolophidae are three commercially important species in the Australian fishery. These species are currently managed as single stocks. We tested the hypothesis that patterns of phenotypic structuring in these species reflect underlying genetic stock structure using an analysis of mitochondrial DNA control region sequences. The analysis revealed high levels of haplotype diversity within populations. The most common haplotypes for the species occurred in all geographical locations sampled. For S. brama, although structuring was not significant after Bonferroni correction, differences between two sites were sufficient to warrant caution in the management of fishery zones for this species. There were also some indications of structuring when sites were grouped into common regions. Demographic analysis suggested that S. brama might have had a history of population bottlenecks followed by sudden population expansion, potentially contributing to genetic structuring in the fishery. No structuring was detected for H. antarctica and S. punctata. The present study highlights the need for, and the utility of, multiple sources of information, that is, genetic, phenotypic, behavioural and ecological, when managing marine fisheries and the need to take a cautionary approach to the interpretation of genetic data for fisheries management.

Additional keywords: control region, demography, haplotype diversity, mitochondrial DNA, Southern and Eastern Scalefish and Shark Fishery.


Acknowledgements

The research was carried out as part of two broader projects on the stock structure and spatial dynamics of warehous and blue-eye trevalla. We acknowledge and thank Fisheries Victoria, the Australian Fisheries Management Authority and the Fisheries Research and Development Corporation for funding these projects (2001/004 and 2003/045). Thanks to G. Cottier, P. McCoy, K. Smith and C. Fenner for the collection of samples. We thank three anonymous referees for helpful and constructive suggestions on the manuscript.


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