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

Type Article
Date 2020-12
Language English
Author(s) Chinain Mireille1, Mahana Iti Gatti Clémence1, Ung André1, Cruchet Philippe1, Revel Taina1, Viallon Jérôme1, Sibat ManoellaORCID2, Varney Patrick3, Laurent Victoire3, Hess PhilippORCID2, Taiana Darius Hélène1
Affiliation(s) 1 : Institut Louis Malardé, Laboratory of Marine Biotoxins—UMR EIO (IFREMER-ILM-IRD-UPF), P.O. Box 30, 98713 Papeete, Tahiti, French Polynesia
2 : Institut Français de Recherche Pour l’Exploitation de la Mer, Phycotoxins Laboratory, 44311 Nantes, France
3 : Météo France, Direction Inter-Régionale en Polynésie Française, P.O. Box 6005, 98702 Faa’a, Tahiti, French Polynesia
Source Toxins (2072-6651) (MDPI AG), 2020-12 , Vol. 12 , N. 12 , P. 759 (30p.)
DOI 10.3390/toxins12120759
WOS© Times Cited 25
Keyword(s) ciguatera poisoning, French Polynesia, Gambierdiscus, ciguatoxins, epidemiology, toxicological analyses, risk management, climate change

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

Full Text
File Pages Size Access
Publisher's official version 28 3 MB Open access
Supplementary File 1 7 891 KB Open access
Top of the page

How to cite 

Chinain Mireille, Mahana Iti Gatti Clémence, Ung André, Cruchet Philippe, Revel Taina, Viallon Jérôme, Sibat Manoella, Varney Patrick, Laurent Victoire, Hess Philipp, Taiana Darius Hélène (2020). Evidence for the Range Expansion of Ciguatera in French Polynesia: A Revisit of the 2009 Mass-Poisoning Outbreak in Rapa Island (Australes Archipelago). Toxins, 12(12), 759 (30p.). Publisher's official version : https://doi.org/10.3390/toxins12120759 , Open Access version : https://archimer.ifremer.fr/doc/00662/77362/