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...
Main Authors: | , , , , , , , , |
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Format: | Conference Object |
Language: | English |
Published: |
International Society for the Study of Harmful Algae and Intergovernmental Oceanographic Commission of UNESCO
2013
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Subjects: | |
Online Access: | http://www.issha.org/Welcome-to-ISSHA/Conferences/ICHA-conference-proceedings/ICHA14-Proceedings http://ecite.utas.edu.au/86695 |
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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