FN Archimer Export Format PT J TI Ciguatoxin Occurrence in Food-Web Components of a Cuban Coral Reef Ecosystem: Risk-Assessment Implications BT AF Díaz-Asencio, Lisbet Clausing, Rachel J. Vandersea, Mark Chamero-Lago, Donaida Gómez-Batista, Miguel Hernández-Albernas, Joan I. Chomérat, Nicolas Rojas-Abrahantes, Gabriel Litaker, Wayne Tester, Patricia Diogène, Jorge Alonso-Hernández, Carlos M. Dechraoui Bottein, Marie-Yasmine AS 1:1;2:2,3;3:4;4:1;5:1;6:5;7:6;8:1;9:4;10:7;11:8;12:1,2;13:2,9; FF 1:;2:;3:;4:;5:;6:;7:PDG-ODE-LITTORAL-LERBO;8:;9:;10:;11:;12:;13:; C1 Centro de Estudios Ambientales de Cienfuegos, Ciudad Nuclear, Cienfuegos 59350, Cuba Environment Laboratories, Department of Nuclear Science and Application, International Atomic Energy Agency, 4 Quai Antoine 1er, MC 98000 Monaco, Monaco Department of Ecology and Evolutionary Biology, University of California Los Angeles, 621 Charles E Young Dr S, Los Angeles, CA 90095-1606, USA National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Beaufort Laboratory, 101 Pivers Island Rd., Beaufort, NC 28516, USA Refugio de Fauna Cayo Santa María, Gaviota S.A., Villa Clara 53100, Cuba Ifremer, Laboratory of Environment and Resources Western Britanny, Coastal Research Unit, Place de la Croix, B.P. 40537, 29185 Concarneau CEDEX, France Ocean Tester, LLC, 295 Dills Point Road, Beaufort, NC 28516, USA Marine Environmental Monitoring, IRTA, Ctra. Poble Nou km 5.5, 43540 Sant Carles de la Ràpita, Spain Intergovernmental Oceanographic Commission of UNESCO, IOC Science and Communication Centre on Harmful Algae, University of Copenhagen, 2100 Copenhagen, Denmark C2 CEAC, CUBA IAEA, MONACO UNIV CALIF LOS ANGELES, USA NOAA, USA REFUGIO FAUNA CAYO SANTA MARIA, CUBA IFREMER, FRANCE OCEAN TESTER LLC, USA IRTA, SPAIN IOC, DENMARK SI CONCARNEAU SE PDG-ODE-LITTORAL-LERBO IN WOS Ifremer UPR DOAJ copubli-europe copubli-int-hors-europe copubli-sud IF 2.13 TC 28 UR https://archimer.ifremer.fr/doc/00597/70947/69189.pdf https://archimer.ifremer.fr/doc/00597/70947/69190.pdf LA English DT Article DE ;Caribbean;ciguatoxicity;qPCR;trophic transfer;ish;food safety;food security;science-based management;foodborne disease AB In Cuba, ciguatera poisoning associated with fish consumption is the most commonly occurring non-bacterial seafood-borne illness. Risk management through fish market regulation has existed in Cuba for decades and consists of bans on selected species above a certain weight; however, the actual occurrence of ciguatoxins (CTXs) in seafood has never been verified. From this food safety risk management perspective, a study site locally known to be at risk for ciguatera was selected. Analysis of the epiphytic dinoflagellate community identified the microalga Gambierdiscus. Gambierdiscus species included six of the seven species known to be present in Cuba (G. caribaeus, G. belizeanus, G. carpenteri, G. carolinianus, G. silvae, and F. ruetzleri). CTX-like activity in invertebrates, herbivorous and carnivorous fishes were analyzed with a radioligand receptor-binding assay and, for selected samples, with the N2A cell cytotoxicity assay. CTX activity was found in 80% of the organisms sampled, with toxin values ranging from 2 to 8 ng CTX3C equivalents g−1 tissue. Data analysis further confirmed CTXs trophic magnification. This study constitutes the first finding of CTX-like activity in marine organisms in Cuba and in herbivorous fish in the Caribbean. Elucidating the structure–activity relationship and toxicology of CTX from the Caribbean is needed before conclusions may be drawn about risk exposure in Cuba and the wider Caribbean PY 2019 PD DEC SO Toxins SN 2072-6651 PU MDPI AG VL 11 IS 12 UT 000507337800045 DI 10.3390/toxins11120722 ID 70947 ER EF