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Pacific ciguatoxins in food web components of coral reef systems in the Republic of Kiribati.
Environ Sci Technol. 2013 Dec 17; 47(24):14070-9.ES

Abstract

Ciguatera fish poisoning (CFP) is a foodborne illness caused by consumption of coral reef fishes contaminated by ciguatoxins (CTXs); of the known CTX congeners, the Pacific ciguatoxins (P-CTXs) are the most toxic. Little is known about the trophodynamics of P-CTXs in coral reef systems. The present study explores the distribution, transfer, and trophic magnification of P-CTX-1, -2, and -3 in coral reef systems with high (ciguatoxic) and low (reference) ciguatoxicity in a CFP-endemic nation by use of liquid chromatography-tandem mass spectrometry (LC-MS/MS). In ciguatoxic coral reef systems, P-CTXs were detected in 54% of herbivorous fishes [total P-CTXs <0.500-1670 pg/g wet weight (ww)], 72% of omnivorous fishes (<0.500-1810 pg/g ww), and 76% of carnivorous fishes (<0.500-69 500 pg/g ww), as well as a lobster (Panulirus penicillatus ; 2.36 pg/g ww) and an octopus (Octopodidae; 2.56 pg/g ww). The dominant P-CTXs in grazers and piscivorous fishes were P-CTX-2 and -1, respectively. No significant correlation between P-CTX levels and lipid content in three target predatory fishes indicated that accumulation of P-CTXs does not depend on fat content. A weak but significant positive relationship was observed between δ(15)N and P-CTX-1 levels, but further investigation is required to confirm its biomagnification potential.

Authors+Show Affiliations

State Key Laboratory in Marine Pollution and ‡Department of Biology and Chemistry, City University of Hong Kong , Tat Chee Avenue, Kowloon, Hong Kong Special Administrative Region, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24228863

Citation

Mak, Yim Ling, et al. "Pacific Ciguatoxins in Food Web Components of Coral Reef Systems in the Republic of Kiribati." Environmental Science & Technology, vol. 47, no. 24, 2013, pp. 14070-9.
Mak YL, Wai TC, Murphy MB, et al. Pacific ciguatoxins in food web components of coral reef systems in the Republic of Kiribati. Environ Sci Technol. 2013;47(24):14070-9.
Mak, Y. L., Wai, T. C., Murphy, M. B., Chan, W. H., Wu, J. J., Lam, J. C., Chan, L. L., & Lam, P. K. (2013). Pacific ciguatoxins in food web components of coral reef systems in the Republic of Kiribati. Environmental Science & Technology, 47(24), 14070-9. https://doi.org/10.1021/es403175d
Mak YL, et al. Pacific Ciguatoxins in Food Web Components of Coral Reef Systems in the Republic of Kiribati. Environ Sci Technol. 2013 Dec 17;47(24):14070-9. PubMed PMID: 24228863.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Pacific ciguatoxins in food web components of coral reef systems in the Republic of Kiribati. AU - Mak,Yim Ling, AU - Wai,Tak-Cheung, AU - Murphy,Margaret B, AU - Chan,Wing Hei, AU - Wu,Jia Jun, AU - Lam,James C W, AU - Chan,Leo L, AU - Lam,Paul K S, Y1 - 2013/12/03/ PY - 2013/11/16/entrez PY - 2013/11/16/pubmed PY - 2014/10/8/medline SP - 14070 EP - 9 JF - Environmental science & technology JO - Environ Sci Technol VL - 47 IS - 24 N2 - Ciguatera fish poisoning (CFP) is a foodborne illness caused by consumption of coral reef fishes contaminated by ciguatoxins (CTXs); of the known CTX congeners, the Pacific ciguatoxins (P-CTXs) are the most toxic. Little is known about the trophodynamics of P-CTXs in coral reef systems. The present study explores the distribution, transfer, and trophic magnification of P-CTX-1, -2, and -3 in coral reef systems with high (ciguatoxic) and low (reference) ciguatoxicity in a CFP-endemic nation by use of liquid chromatography-tandem mass spectrometry (LC-MS/MS). In ciguatoxic coral reef systems, P-CTXs were detected in 54% of herbivorous fishes [total P-CTXs <0.500-1670 pg/g wet weight (ww)], 72% of omnivorous fishes (<0.500-1810 pg/g ww), and 76% of carnivorous fishes (<0.500-69 500 pg/g ww), as well as a lobster (Panulirus penicillatus ; 2.36 pg/g ww) and an octopus (Octopodidae; 2.56 pg/g ww). The dominant P-CTXs in grazers and piscivorous fishes were P-CTX-2 and -1, respectively. No significant correlation between P-CTX levels and lipid content in three target predatory fishes indicated that accumulation of P-CTXs does not depend on fat content. A weak but significant positive relationship was observed between δ(15)N and P-CTX-1 levels, but further investigation is required to confirm its biomagnification potential. SN - 1520-5851 UR - https://www.unboundmedicine.com/medline/citation/24228863/Pacific_ciguatoxins_in_food_web_components_of_coral_reef_systems_in_the_Republic_of_Kiribati_ L2 - https://doi.org/10.1021/es403175d DB - PRIME DP - Unbound Medicine ER -