eCite Digital Repository

Lobster supply chains are not at risk from paralytic shellfish toxin accumulation during wet storage

Citation

Turnbull, A and Seger, A and Jolley, J and Hallegraeff, G and Knowles, G and Fitzgibbon, Q, Lobster supply chains are not at risk from paralytic shellfish toxin accumulation during wet storage, Toxins, 13, (2) Article 129. ISSN 2072-6651 (2021) [Refereed Article]


Preview
PDF
23Mb
  

Copyright Statement

Copyright 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

DOI: doi:10.3390/toxins13020129

Abstract

Lobster species can accumulate paralytic shellfish toxins (PST) in their hepatopancreas following the consumption of toxic prey. The Southern Rock Lobster (SRL), Jasus edwardsii, industry in Tasmania, Australia, and New Zealand, collectively valued at AUD 365 M, actively manages PST risk based on toxin monitoring of lobsters in coastal waters. The SRL supply chain predominantly provides live lobsters, which includes wet holding in fishing vessels, sea-cages, or processing facilities for periods of up to several months. Survival, quality, and safety of this largely exported high-value product is a major consideration for the industry. In a controlled experiment, SRL were exposed to highly toxic cultures of Alexandrium catenella at field relevant concentrations (2 105 cells L−1) in an experimental aquaculture facility over a period of 21 days. While significant PST accumulation in the lobster hepatopancreas has been reported in parallel experiments feeding lobsters with toxic mussels, no PST toxin accumulated in this experiment from exposure to toxic algal cells, and no negative impact on lobster health was observed as assessed via a wide range of behavioural, immunological, and physiological measures. We conclude that there is no risk of PST accumulation, nor risk to survival or quality at the point of consumption through exposure to toxic algal cells.

Item Details

Item Type:Refereed Article
Keywords:lobster supply chain, PST, lobster health, toxic algae, Alexandrium, Jasus edwardsii
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Post-harvest fisheries technologies (incl. transportation)
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Wild caught rock lobster
UTAS Author:Turnbull, A (Ms Alison Turnbull)
UTAS Author:Seger, A (Mr Andreas Seger)
UTAS Author:Hallegraeff, G (Professor Gustaaf Hallegraeff)
UTAS Author:Fitzgibbon, Q (Associate Professor Quinn Fitzgibbon)
ID Code:142881
Year Published:2021
Deposited By:Directorate
Deposited On:2021-02-14
Last Modified:2021-04-09
Downloads:1 View Download Statistics

Repository Staff Only: item control page