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Protecting finfish aquaculture from harmful algal blooms: ichthyotoxin adsorption by clay minerals


Seger, A and Hallegraeff, G, Protecting finfish aquaculture from harmful algal blooms: ichthyotoxin adsorption by clay minerals, International Society for Applied Phycology Newsletter, International Society for Applied Phycology Stichting, Netherlands, 2-2018 (2018) [Magazine Article]

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Harmful algal blooms pose a significant threat to a globally expanding aquaculture industry through the production of potent fish-killing toxins (ichthyotoxins). Extensive economic damages to the finfish aquaculture sector (up to US $800 million for single events) have highlighted the urgent requirement for the development of effective mitigation strategies. The largely unknown chemical nature of most ichthyotoxins has necessitated the development of novel bioassay systems, the most recent breakthrough being the development of a fish gill cell line assay, allowing for the direct exposure of fish gill epithelial cells to live algal samples. Employing this assay, we here briefly summarize our recent work on the use of clay minerals to mitigate fish-killing impacts. We focus on the direct adsorption of ichthyotoxins to clay particles, a novel aspect of clay treatment that promises refinement and increased efficacy of existing clay application regimes.

Item Details

Item Type:Magazine Article
Keywords:fish-killing, algae, clay, mitigation, aquaculture
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:Aquaculture fin fish (excl. tuna)
UTAS Author:Seger, A (Mr Andreas Seger)
UTAS Author:Hallegraeff, G (Professor Gustaaf Hallegraeff)
ID Code:140792
Year Published:2018
Deposited By:Fisheries and Aquaculture
Deposited On:2020-09-08
Last Modified:2020-12-21

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