Darius H. T. auteur aut IRD Ponton Dominique auteur aut IRD Revel T. auteur aut IRD Cruchet P. auteur aut IRD Ung A. auteur aut IRD Fouc M. T. auteur aut IRD Chinain M. auteur aut IRD text journalArticle eng text/pdf born digital access Ciguatera Fish Poisoning (CFP) is a tropical syndrome well known in remote archipelagos where the population is still dependent on fish resources. In order to assess the ciguatera risk in two islands of French Polynesia, Tubuai (Australes) and Nuku Hiva (Marquesas), a study was carried out on both Gambierdiscus populations as well as on various fish species using the receptor-binding assay (RBA) to detect and quantify ciguatoxins. Relationship between RBA data and size or weight of fish was evaluated, and when only few individuals for a particular species were available the trophic level was used to help comparisons between studied areas. According to epidemiological data, toxic versus safe areas were explored and compared in both islands. In Tubuai Island, Gambierdiscus cells were surprisingly absent in the north area, considered as a toxic area, but almost 94% of fishes were classified as RBA. In contrast, the south area, supposed to be safe, was evolving to be a risky area because of the presence of Gambierdiscus cells and 74% of fishes being RBA(+). In Nuku Hiva Island, Gambierdiscus cells were present in the toxic areas, Anaho, Taiohae and Taipivei, with two toxic blooms in Anaho Bay, but none in Terre Deserte, the fishing area of this island. With RBA data, fishes were analyzed to be RBA(+) at a high percentage in Anaho and Taiohae, higher than in Taipivei and Terre Deserte areas. In general, our findings were congruent with epidemiological data and the knowledge of local people only for risky fish species. specialized ciguatera risks Gambierdiscus fish ciguatoxins detection receptor binding assay 035 050 50 5 612-626 2007 0041-0101 https://www.documentation.ird.fr/hor/fdi:010040857 10.1016/j.toxicon.2007.05.007 0041-0101 [F B010040857] https://www.documentation.ird.fr/hor/fdi:010040857 https://www.documentation.ird.fr/intranet/publi/2007/12/010040857.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2007-12-21 2017-08-23 fdi:010040857 fre