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Ciguatera toxins in the food chain revealed by stable isotopes.
Bull Soc Pathol Exot. 1992; 85(5 Pt 2):510-3.BS

Abstract

The stable carbon and nitrogen isotope contents of the meat tissues of 27 identifiable fish found in the gut contents of 70 ciguatoxic and non-ciguatoxic barracuda caught along the southwest coast of Puerto Rico have been analyzed. The isotope ratios of those fish found in the stomach contents of ciguatoxic barracuda were significantly different than ratios determined in those fish found in the stomachs of non-ciguatoxic barracuda. The isotope ratios of the toxic dinoflagellate Ostreopsis lenticularis, a presumed vector of ciguatera in the Caribbean were found to be extremely light, particularly for nitrogen. The lightened nitrogen ratios of the herbivore (Doctorfish) and carnivore (Squirrelfish) fishes found in the stomach contents of ciguatoxic barracuda suggest that the dinoflagellate was in the food chain of these barracuda. Results indicate that the trophic pathway of ciguatoxins through the marine food chain from the presumed primary trophic level (dinoflagellates/bacteria) to ciguatoxic barracuda appears to be different than the pathway to non-toxic barracuda. Stable isotope ratios may be a very useful tool for tracing ciguatoxins in the food chain and the identification of ciguatoxic fish.

Authors+Show Affiliations

Department of Marine Sciences, University of Puerto Rico, Mayaguez 00681-5000.No affiliation info available

Pub Type(s)

Journal Article
Review

Language

eng

PubMed ID

1340356

Citation

Winter, A, and T R. Tosteson. "Ciguatera Toxins in the Food Chain Revealed By Stable Isotopes." Bulletin De La Societe De Pathologie Exotique (1990), vol. 85, no. 5 Pt 2, 1992, pp. 510-3.
Winter A, Tosteson TR. Ciguatera toxins in the food chain revealed by stable isotopes. Bull Soc Pathol Exot. 1992;85(5 Pt 2):510-3.
Winter, A., & Tosteson, T. R. (1992). Ciguatera toxins in the food chain revealed by stable isotopes. Bulletin De La Societe De Pathologie Exotique (1990), 85(5 Pt 2), 510-3.
Winter A, Tosteson TR. Ciguatera Toxins in the Food Chain Revealed By Stable Isotopes. Bull Soc Pathol Exot. 1992;85(5 Pt 2):510-3. PubMed PMID: 1340356.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ciguatera toxins in the food chain revealed by stable isotopes. AU - Winter,A, AU - Tosteson,T R, PY - 1992/1/1/pubmed PY - 1992/1/1/medline PY - 1992/1/1/entrez SP - 510 EP - 3 JF - Bulletin de la Societe de pathologie exotique (1990) JO - Bull Soc Pathol Exot VL - 85 IS - 5 Pt 2 N2 - The stable carbon and nitrogen isotope contents of the meat tissues of 27 identifiable fish found in the gut contents of 70 ciguatoxic and non-ciguatoxic barracuda caught along the southwest coast of Puerto Rico have been analyzed. The isotope ratios of those fish found in the stomach contents of ciguatoxic barracuda were significantly different than ratios determined in those fish found in the stomachs of non-ciguatoxic barracuda. The isotope ratios of the toxic dinoflagellate Ostreopsis lenticularis, a presumed vector of ciguatera in the Caribbean were found to be extremely light, particularly for nitrogen. The lightened nitrogen ratios of the herbivore (Doctorfish) and carnivore (Squirrelfish) fishes found in the stomach contents of ciguatoxic barracuda suggest that the dinoflagellate was in the food chain of these barracuda. Results indicate that the trophic pathway of ciguatoxins through the marine food chain from the presumed primary trophic level (dinoflagellates/bacteria) to ciguatoxic barracuda appears to be different than the pathway to non-toxic barracuda. Stable isotope ratios may be a very useful tool for tracing ciguatoxins in the food chain and the identification of ciguatoxic fish. SN - 0037-9085 UR - https://www.unboundmedicine.com/medline/citation/1340356/Ciguatera_toxins_in_the_food_chain_revealed_by_stable_isotopes_ L2 - https://medlineplus.gov/foodborneillness.html DB - PRIME DP - Unbound Medicine ER -