Prevalence and proposal for cost-effective management of the ciguatera risk in the Noumea fish market, New Caledonia (South Pacific)

Clua, Éric; Brena, Pierpaolo F.; Lecasble, Côme; Ghnassia, Reine; Chauvet, C.

doi:10.1016/j.toxicon.2011.08.020

Cited by 17 publications

(30 citation statements)

References 24 publications

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“…in the Canary Islands was documented in 2004 [22] and confirmed in 2011 [14]. This coincides with the detection of the first outbreaks in Canary Islands in 2004 and from 2009 is beginning to make a plan for detecting ciguatoxin in the archipelago, beginning itself to detect fish (amberjacks) carriers of the toxin [34]. We present in this work the fish analyzed from September 2011 to December 2014, supporting the existence of fish with toxin yet.…”

Section: Resultssupporting

confidence: 77%

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Ciguatera, an Emerging Human Poisoning in Europe

Acosta¹

2015

JAMB

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Section: Resultssupporting

confidence: 77%

“…This observation is in agreement with other works [32,33] who have reported in the Pacific (French Polynesia) no clear relation between CTXs content and the size of fish specimens. The same authors have also reported the presence of CTXs in both herbivorous and carnivorous fish specimens [34].…”

Section: Resultsmentioning

confidence: 85%

Ciguatera, an Emerging Human Poisoning in Europe

Acosta¹

2015

JAMB

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“…36 In the Pacific Islands, live reef fish from Kiribati caused a serious ciguatera outbreak in Hong Kong and a ban on export (including E. fuscoguttatus) was imposed in 2004. 37 2 wild-caught samples contained total P-CTX 0.13-3.1 μg/kg flesh (P-CTX-1 ∼54%), the 8.2 kg fish contained total P-CTX 3.1 μg/kg flesh New Caledonia 33 Size threshold for ciguatoxicity 40 cm (1.0 kg), based on assessment by the local experts and published reports; all 5 specimens (100%) in the local market were significantly above the this size threshold CTX = ciguatoxin; MBA = mouse bioassay; P-CTX = Pacific ciguatoxin. *11 fish samples collected from Okinawa waters over 10 years.…”

Section: Regulatory Measures and Fish Size Preferencementioning

confidence: 99%

“…33 In Hong Kong, E. fuscoguttatus < 1.8 kg was more popular because the risk of toxicity was assumed to be lower and plate-sized fish was considered the best for consumption. 38 In Mauritius (Indian Ocean), the sales of E. fuscoguttatus and 16 other species were not allowed.…”

Section: Regulatory Measures and Fish Size Preferencementioning

confidence: 99%

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Ciguatoxic Potential of Brown-Marbled Grouper in Relation to Fish Size and Geographical Origin

Chan

2015

The American Society of Tropical Medicine and Hygiene

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Abstract. To determine the ciguatoxic potential of brown-marbled grouper (Epinephelus fuscoguttatus) in relation to fish size and geographical origin, this review systematically analyzed: 1) reports of large ciguatera outbreaks and outbreaks with description of the fish size; 2) Pacific ciguatoxin (P-CTX) profiles and levels and mouse bioassay results in fish samples from ciguatera incidents; 3) P-CTX profiles and levels and risk of toxicity in relation to fish size and origin; 4) regulatory measures restricting fish trade and fish size preference of the consumers. P-CTX levels in flesh and size dependency of toxicity indicate that the risk of ciguatera after eating E. fuscoguttatus varies with its geographical origin. For a large-sized grouper, it is necessary to establish legal size limits and control measures to protect public health and prevent overfishing. More risk assessment studies are required for E. fuscoguttatus to determine the size threshold above which the risk of ciguatera significantly increases.

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Experimental evidence of dietary ciguatoxin accumulation in an herbivorous coral reef fish

et al. 2018

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Ciguatoxins (CTXs) are potent algal toxins that cause widespread ciguatera poisoning and are found ubiquitously in coral reef food webs. Here we developed an environmentally-relevant, experimental model of CTX trophic transfer involving dietary exposure of herbivorous fish to the CTX-producing microalgae Gambierdiscus polynesiensis. Juvenile Naso brevirostris were fed a gel-food embedded with microalgae for 16 weeks (89 cells g fish daily, 0.4 μg CTX3C equiv kg fish). CTXs in muscle tissue were detectable after 2 weeks at levels above the threshold for human intoxication (1.2 ± 0.2 μg CTX3C equiv kg). Although tissue CTX concentrations stabilized after 8 weeks (∼3 ± 0.5 μg CTX3C equiv kg), muscle toxin burden (total μg CTX in muscle tissue) continued to increase linearly through the end of the experiment (16 weeks). Toxin accumulation was therefore continuous, yet masked by somatic growth dilution. The observed CTX concentrations, accumulation rates, and general absence of behavioural signs of intoxication are consistent with field observations and indicate that this method of dietary exposure may be used to develop predictive models of tissue-specific CTX uptake, metabolism and depuration. Results also imply that slow-growing fish may accumulate higher CTX flesh concentrations than fast-growing fish, which has important implications for global seafood safety.

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Prevalence and proposal for cost-effective management of the ciguatera risk in the Noumea fish market, New Caledonia (South Pacific)

Cited by 17 publications

References 24 publications

Ciguatera, an Emerging Human Poisoning in Europe

Ciguatera, an Emerging Human Poisoning in Europe

Ciguatoxic Potential of Brown-Marbled Grouper in Relation to Fish Size and Geographical Origin

Experimental evidence of dietary ciguatoxin accumulation in an herbivorous coral reef fish

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