Potency of pinnatoxins produced by dinoflagellates isolated from New Zealand and South Australia

Vulcanodinium rugosum., the scrippsielloid dinoflagellate producer of pinnatoxins, wasisolated from surface sediments collected from Northland, New Zealand, in summer2008/2009. The dinoflagellate was isolated and cultured predominantly in cyst form, with theNew Zealand isolates producing pinnatoxins...

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Bibliographic Details
Main Authors: Rhodes, L, Smith, K, Munday, R, Hallegraeff, GM, Selwood, A, Molenaar, S, McNabb, P, Adamson, J, Wilkinson, C
Format: Conference Object
Language:English
Published: International Society for the Study of Harmful Algae and Intergovernmental Oceanographic Commission of UNESCO 2013
Subjects:
Biological Sciences
Plant Biology
Phycology (incl. Marine Grasses)
Gand
New Zealand
Pacific
Pacific oyster
Online Access:http://www.issha.org/Welcome-to-ISSHA/Conferences/ICHA-conference-proceedings/ICHA14-Proceedings
http://ecite.utas.edu.au/86695
Description
Summary:Vulcanodinium rugosum., the scrippsielloid dinoflagellate producer of pinnatoxins, wasisolated from surface sediments collected from Northland, New Zealand, in summer2008/2009. The dinoflagellate was isolated and cultured predominantly in cyst form, with theNew Zealand isolates producing pinnatoxins E and F and Australian isolates predominantly Gand less E and F. V. rugosum killed sea urchin and paua larvae and caused morbitity in seaslug larvae; Pacific oyster and Artemia salina larvae became slightly moribund. GreenshellTMmussel larvae were unaffected. Depuration rates of 50% of pinnatoxin E and F from Pacificoysters were 14.5 and 16 d respectively. Crude extracts of mass cultures of the New Zealandand Australian isolates tested for toxicity in mice by intraperitoneal injection, gavage andvoluntary consumption resulted in toxicity ratios of 1.0: 1.8: 4.5 and 1.0: 2.9: 7.8 respectively.

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