Identification of ciguatoxins in a shark involved in a fatal food poisoning in the Indian Ocean
Visualitza/Obre
Autor/a
Reverté, Laia
Rambla-Alegre, Maria
del Río, Vanessa
de la Iglesia, Pablo
Palacios, Oscar
Flores, Cintia
Caixach, Josep
Ralijaona, Christian
Razanajatovo, Iony
Pirog, Agathe
Magalon, Hélène
Arnich, Nathalie
Turquet, Jean
Data de publicació
2017-08-15ISSN
2045-2322
Resum
Severe food poisoning events after the consumption of sharks have been reported since the 1940s;
however, there has been no clear understanding of their cause. Herein, we report for the frst time the
presence of ciguatoxins (CTXs) in sharks. The identifcation by mass spectrometry of CTXs, including two
new analogues, in a bull shark (Carcharhinus leucas) that was consumed by humans, causing the poisoning and death of 11 people in Madagascar in 2013 is described. Typical neurotoxic ciguatera symptoms were recorded in patients, and toxicological assays on extracts of the shark demonstrated CTX-like activity. These results confrm this episode as a ciguatera poisoning event and expand the range of pelagic fish species that are involved in ciguatera in the Indian Ocean. Additionally, gambieric acid D, a molecule originally described in CTX-producing microalgae, was identifed for the frst time in fsh. This fnding can contribute to a better understanding of trophic relations within food webs. The present work confrms that consumption of sharks from the Indian Ocean should be considered a ciguatera risk, and actions should be taken to evaluate its magnitude and risk in order to manage shark fsheries.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
639 - Caça. Pesca. Piscicultura
Pàgines
8
Publicat per
Nature Research
Publicat a
Scientific Reports
Citació
Diogène, Jorge, Laia Reverté, Maria Rambla-Alegre, Vanessa del Río, Pablo de la Iglesia, Mònica Campàs, and Oscar Palacios et al. 2017. "Identification Of Ciguatoxins In A Shark Involved In A Fatal Food Poisoning In The Indian Ocean". Scientific Reports 7 (1). doi:10.1038/s41598-017-08682-8.
Número de l'acord de la subvenció
EC/FP7/311820/EU/Priority environmental contaminants in seafood: safety assessment, impact and public perception/ECSAFESEAFOOD
Programa
Aigües Marines i Continentals
Aquest element apareix en la col·lecció o col·leccions següent(s)
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