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New Zealand Journal of Marine and Freshwater Research abstracts


Description and genetic identification of the early life-stages of Notolabrus fucicola and N. tetricus from Tasmanian waters, Australia, with notes on their newly-settled juveniles

D. C. Welsford1,2
A. R. Jordan1
A. J. Smolenski2

1Tasmanian Aquaculture and Fisheries Institute
Marine Research Laboratories
University of Tasmania
GPO Box 252 49, Hobart
TAS 7001, Australia

2School of Zoology
University of Tasmania
GPO Box 252 05, Hobart
TAS 7001, Australia
email: Dirk.Welsford@utas.edu.au

Abstract  The early life-stages of Notolabrus fucicola and N. tetricus are described and illustrated. Developmental stages examined included eggs and yolk-sac larvae reared in aquaria and post-settlement juveniles collected from artificial habitats in the coastal waters of eastern Tasmania, Australia. Larvae were similar to other labrids previously described. Species-specific characters were only evident after settlement, and with the development of scales at c. 15 mm standard length. A molecular assay, based on restriction fragment length polymorphism (RFLP), enabled the discrimination of all five of the closely-related wrasses in the genera Notolabrus, Pseudolabrus, Dotalabrus, and Pictilabrus found on the east coast of Tasmania. This study constitutes the first description of the early life-stages of Notolabrus spp. from temperate Australia.

Keywords  larval development; temperate reef fish; Labridae; Notolabrus tetricus; Notolabrus fucicola; Pseudolabrus psittaculus; Dotalabrus aurantiacus; Pictilabrus laticlavius

M03043; Received 4 August 2003; accepted 3 March 2004; Online publication date 8 June 2004
New Zealand Journal of Marine and Freshwater Research, 2004, Vol. 38: 267-277
0028-8330/04/3802-0267 © The Royal Society of New Zealand 2004

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