New Zealand Journal of Marine and Freshwater Research abstracts
Cell morphology and PSP-toxin profiles of Alexandrium minutum
in the Marlborough Sounds, New Zealand
LINCOLN MACKENZIE
NATASHA BERKETT
Cawthron Institute
Private Bag 2
Nelson, New Zealand
Abstract Thecal plate morphology and paralytic shellfish
poisoning (PSP) toxin spectra produced by three strains of a small
Alexandrium species
isolated from the Marlborough Sounds, New
Zealand were examined. Although these cells displayed minor morphological
features described in the literature as characteristic of both
A.
minutum and
A. lusitanicum,
the former designation was
adopted.
High performance liquid chromatography (HPLC) analysis of
culture extracts showed the toxin profiles to consist predominantly of various
proportions of the carbamate toxins GTX1, GTX2, GTX4, neoSTX, and STX. These
toxin profiles were similar to those observed in other New Zealand isolates of
A. minutum. They were however rather different from those observed in
this species elsewhere in the world though the specific toxicity of these cells
(1.8-2.2
pg STX equivalents per cell) was similarly low.
Keywords dinoflagellates; Alexandrium minutum;
paralytic shellfish poisoning; toxins; Marlborough Sounds; New Zealand
New Zealand Journal of Marine and Freshwater Research, 1997, Vol. 31:
403-409
0028-8330/97/3103-0403 $7.00/0 (c) The Royal Society of New Zealand
1997
PDF file of entire paper: medium quality (1160K); (scanned from paper original: notes about this process)
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