News from Cayman about a project to evaluate the risk of ciguatera poisoning associated with lionfish consumption:
A study to determine if Cayman’s lionfish carry the toxin that causes ciguatera poisoning is under way, but so far there have been no reports of humans contracting the illness from eating the invasive species.
Researcher Bill Davin, an associate biology professor at Berry College in Mount Berry, Georgia, has been examining lionfish samples supplied by the Cayman Islands to see if they contain the naturally occurring toxin.
He has carried out examinations on 20 lionfish from all three islands – 12 from Cayman Brac, two from Little Cayman and six from Grand Cayman.
“Only one of the fish extracts thus far has shown signs of bio-activity, but those levels were relatively low compared to previous research I have done on ciguatoxic fish,” he said.
…
St. Maarten’s Nature Foundation last year recommended lionfish not be eaten based on a study that found ciguatoxins in flesh samples of larger lionfish caught in the island’s waters.
A US Food and Drug Administration study in the Caribbean has also revealed presence of the toxin in the flesh of lionfish.
“To date we have received no official reports of illness associated with the consumption of lionfish, but in endemic areas of ciguatera, toxins have been detected at levels exceeding FDA guidance and therefore could cause illness if consumed,” said Pat El-Hinnawy, an FDA public affairs officer. “The Virgin Islands is one of those areas. We have collected more than 186 fish from the waters around the US Virgin Islands, including St Croix, St. Thomas and St. John, and Puerto Rico. Of these, we have tested 74 fish to date with 26 per cent confirmed to contain ciguatoxins at levels exceeding FDA guidance.
“Our testing continues in this and other regions,” Ms El-Hinnawy said. “These results are consistent with other species of fish that are well known to be ciguatera hazards in endemic areas.”
Mr. Davin said people eating lionfish should use the same precautions they use when eating other Caribbean reef fish that can carry the ciguatera toxin.
“Avoid fish taken from established or known ciguatera hotspots and if a person has already had ciguatera, they should certainly be more careful, since they are certainly at a higher risk of re-intoxification than someone that has never had the disease,” he said.
He added: “While the number of toxic lionfish being reported from St. Thomas and St. Maarten seem high, I have not been able to find a single report of anyone contracting ciguatera from the consumption of lionfish.”
Get more information in the full article from Compass Cayman.
There have been a few other posts on this topic on Green Antilles: Amid concerns about ciguatera poisoning, reassurance that lionfish caught in Bermuda are safe to eat, More data emerges about ciguatera toxin in lionfish, Lionfish and ciguatera risk.
[Photo: Greg Grimes]

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