Pubblicazione scientifica

Evidence for the Range Expansion of Ciguatera in French Polynesia: A Revisit of the 2009 Mass-Poisoning Outbreak in Rapa Island (Australes Archipelago)

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità

RIASSUNTO

Ciguatera poisoning (CP) results from the consumption of seafood contaminated with ciguatoxins (CTXs). This disease is highly prevalent in French Polynesia with several well-identified hotspots. Rapa Island, the southernmost inhabited island in the country, was reportedly free of CP until 2007. This study describes the integrated approach used to investigate the etiology of a fatal mass-poisoning outbreak that occurred in Rapa in 2009. Symptoms reported in patients were evocative of ciguatera. Several Gambierdiscus field samples collected from benthic assemblages tested positive by the receptor binding assay (RBA). Additionally, the toxicity screening of ≈250 fish by RBA indicated ≈78% of fish could contain CTXs. The presence of CTXs in fish was confirmed by liquid chromatography tandem mass spectrometry (LC-MS/MS). The potential link between climate change and this range expansion of ciguatera to a subtropical locale of French Polynesia was also examined based on the analysis of temperature time-series data. Results are indicative of a global warming trend in Rapa area. A five-fold reduction in incidence rates was observed between 2009 and 2012, which was due in part to self-regulating behavior among individuals (avoidance of particular fish species and areas). Such observations underscore the prominent role played by community outreach in ciguatera risk management.

DATA

Data di pubblicazione: 01/12/2020

AUTORI

CHINAIN MIREILLE
GATTI CLEMENCE MAHANA ITI
UNG ANDRE
CRUCHET PHILIPPE
REVEL TAINA
VIALLON JEROME
SIBAT MANOELLA
VARNEY PATRICK
LAURENT VICTOIRE
HESS PHILIPP
DARIUS HELENE TAIANA

ENTE DI AFFERENZA

INSTITUT LOUIS MALARDE LABORATORY OF MARINE BIOTOXINS—UMR EIO IFREMER-ILM-IRD-UPF PO BOX 30 98713 PAPEETE TAHITI FRENCH POLYNESIA CGATTI@ILM PF CMIG AUNG@ILM PF AU PCRUCHET@ILM PF PC TREVEL@ILM PF TR JVIALLON@ILM PF JV TDARIUS@ILM PF HTD
INSTITUT FRANCAIS DE RECHERCHE POUR L’EXPLOITATION DE LA MER PHYCOTOXINS LABORATORY 44311 NANTES FRANCE MANOELLA SIBAT@IFREMER FR MS PHILIPP HESS@IFREMER FR PH
METEO FRANCE DIRECTION INTER-REGIONALE EN POLYNESIE FRANCAISE PO BOX 6005 98702 FAA’A TAHITI FRENCH POLYNESIA PATRICK VARNEY@PFMAIL DIRPF METEO FR PV VICTOIRE LAURENT@METEO FR VL

RIVISTA

Toxins, 12(12), 759

IMPACT FACTOR

3,760

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