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Temperature tolerances of toxic dinoflagellate cysts: application to the treatment of ships' ballast water

Citation

Hallegraeff, GM and Valentine, JP and Marshall, JA and Bolch, CJS, Temperature tolerances of toxic dinoflagellate cysts: application to the treatment of ships' ballast water , Aquatic Ecology, 31, (1) pp. 47-52. ISSN 1386-2588 (1997) [Refereed Article]

DOI: doi:10.1023/A:1009972931195

Abstract

Using toxic dinoflagellates and their resistant resting cysts as model organisms, we demonstrate the potential of heat treatment as a method to minimise the transport of harmful aquatic organisms via ships' ballast water. Vegetative dinoflagellate cultures of Gymnodinium catenatum could be readily killed using temperatures as low as 35 °C and treatment times in the range 30 minutes to 5 h. The resistant resting cysts (hypnozygotes) of G. catenatum were killed after 2 h at 35 °C and the cysts of Alexandrium catenella were killed after 4.5 h at 38 °C. A careful assessment of various waste heat sources on the BHP bulk carrier 'Iron Whyalla' has confirmed the practicability of this approach, and a successful pilot heat treatment plant was trialled on-board ship in April 1997.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Phycology (incl. Marine Grasses)
Objective Division:Transport
Objective Group:Environmentally Sustainable Transport
Objective Field:Environmentally Sustainable Transport not elsewhere classified
Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
Author:Valentine, JP (Dr Joseph Valentine)
Author:Marshall, JA (Dr Judith Marshall)
Author:Bolch, CJS (Dr Christopher Bolch)
ID Code:11464
Year Published:1997
Deposited By:Plant Science
Deposited On:1997-08-01
Last Modified:2011-08-12
Downloads:0

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