New Zealand Journal of Marine and Freshwater Research abstracts

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Genetic subdivision of Australian and New Zealand populations of Jasus verreauxi (Decapoda: Palinuridae) - preliminary evidence from the mitochondrial genome

D.J. BRASHER J.R.OVENDEN

Fish Research Group
Department of Zoology
University of Tasmania
G.P.O.Box252C
Hobart, Tasmania, Australia 7001

J. D. BOOTH

Ministry of Agriculture and Fisheries P. O. Box 297 Wellington, New Zealand

R.W.G. WHITE

Fish Research Group Department of Zoology University of Tasmania

Abstract The palinurid rock lobster, Jasus verreauxi, has a disjunct distribution, occurring on the east coast of Australia and in New Zealand. Oceanic currents flowing across the Tasman Sea from Australia towards New Zealand and the long life of phyllosoma larvae suggests larval mixing and, consequently, genetic similarity between these populations. However, restriction endonuclease analysis of the mitochondrial DNA (mtDNA) of 25 late juvenile and adult lobsters showed that Australian and New Zealand haplotype assemblages are defined by two restriction sites, one confined to each locality. Genetic differentiation between Australian and New Zealand /. verreauxi was also supported by gene diversity analysis (G_St). In contrast to the results from a similar study of a congeneric species with an analogous distribution (J. edwardsii), these preliminary results suggest that larval exchange between adult populations across the Tasman Sea may be limited.

Keywords Jasus verreauxi; mitochondrial DNA; restriction endonuclease; phyllosoma; genetic subdivision; Tasman Sea

New Zealand Journal of Marine and Freshwater Research, 1992, Vol. 26:The Royal Society of New Zealand 1992
Received 20 September 1991; accepted 14 January 1992

PDF file of entire paper: medium quality (430K); (scanned from paper original: notes about this process)

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