New Zealand Journal of Marine and Freshwater Research abstracts
Short communication
Gymnodinoid genera Karenia and Takayama (Dinophyceae) in New
Zealand coastal waters
Miguel F. De Salas
School of Plant Science
University of Tasmania
Private Bag 55, Hobart
TAS 7001, Australia
Lesley L. Rhodes
Lincoln A. Mackenzie
Janet E. Adamson
Krystyna Ponikla
Cawthron Institute
Private Bag 2
Nelson, New Zealand
Abstract New Zealand has been subject to massive blooms
of gymnodinoid dinoflagellates over the last decade and in some instances
marine biota mortalities. Respiratory problems for people impacted by aerosols
from these blooms have occurred. However, because of the difficulty in definitively
identifying gymnodinoid dinoflagellates, the identities of the causative
organisms have not always been established with certainty. This paper documents
the occurrence of several newly described species in the genera Karenia
and Takayama in New Zealand’s coastal waters as determined by analysis
of DNA sequence data. The species include Karenia umbella de Salas,
Bolch & Hallegraeff, Takayama helix de Salas, Bolch, Botes &
Hallegraeff, and T. tasmanica de Salas, Bolch & Hallegraeff, which
are known to have caused fish kills in Tasmanian (Australia) waters in the
past. Liquid chromatography-mass spectrometry analyses of mass cultures of
these dinoflagellates have been negative for neurotoxic brevetoxins. The
species designation of several unidentified gymnodinoid species (designated
Gymnodinium sp.) isolated from New Zealand waters and maintained in the Cawthron
Collection of Micro-algae were also identified on the basis of their DNA
sequences.
Keywords Karenia; Karlodinium; Takayama;
dinoflagellate; HABs; oligonucleotide probes
M04144; Online publication date 18 February 2005
Received 20 October 2004; accepted 16 December 2004
New Zealand Journal of Marine and Freshwater Research, 2005, Vol. 39:
135–139
0028-8330/05/3901-0135 © The Royal Society of New Zealand 2005
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