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Microalgal spores in ship's ballast water: a danger to aquaculture


Hallegraeff, GM and Bolch, CJ and Bryan, J and Koerbin, B, Microalgal spores in ship's ballast water: a danger to aquaculture, Proceedings of the 4th International Conference on Toxic Marine Phytoplankton, 26-30 June, 1989, Lund, Sweden, pp. 475-480. ISBN 9780444015235 (1990) [Refereed Conference Paper]

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Copyright 1990 Elsevier Science Publishing Co., Inc.


Resting spores of diatoms and dinoflagellates were found in the ballast tank sediments of Japanese cargo ships servicing Tasmanian ports. while most phytoplankton cells do not survive the long, dark voyage in ballast tanks and subsequent discharge into different temperature, salinity and nutrient regimes, phytoplankton resting spores are well capable of surviving such unfavourable conditions. Ballast tank sediments, even after being stored in the dark at 4 c for 6 months, were found to be capable of producing viable cultures of diatoms (e.g. Chaetoceros, Odontella) and dinoflagellates (e.g. Protoperidiniwn, Scrippsiella). Of special concern was the finding of the cyst of the toxic dinoflagellate Alexandrium cf. tamarense. Precautionary measures on ballast water discharge are called for, especially where ballast water and/or sediments may be carried into important aquaculture areas.

Item Details

Item Type:Refereed Conference Paper
Keywords:dinoflagellate cysts, phytoplankton, ballast water
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Phycology (incl. marine grasses)
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
UTAS Author:Bolch, CJ (Associate Professor Christopher Bolch)
ID Code:111293
Year Published:1990
Deposited By:Ecology and Biodiversity
Deposited On:2016-09-07
Last Modified:2016-10-18

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