Tags

Type your tag names separated by a space and hit enter

Spatial distribution of ciguateric fish in the Republic of Kiribati.
Chemosphere. 2011 Jun; 84(1):117-23.C

Abstract

Ciguatera is food poisoning caused by human consumption of reef fish contaminated with ciguatoxins (CTXs). The expanding international trade of tropical fish species from ciguatera-endemic regions has resulted in increased global incidence of ciguatera, and more than 50000 people are estimated to suffer from ciguatera each year worldwide. The Republic of Kiribati is located in the Pacific Ocean; two of its islands, Marakei and Tarawa, have been suggested as high-risk areas for ciguatera. The toxicities of coral reef fish collected from these islands, including herbivorous, omnivorous and carnivorous fish (24% [n=41], 8% [n=13] and 68% [n=117], respectively), were analyzed using the mouse neuroblastoma assay (MNA) after CTX extraction. The MNA results indicated that 156 fish specimens, or 91% of the fish samples, were ciguatoxic (CTX levels >0.01 ng g(-1)). Groupers and moray eels were generally more toxic by an order of magnitude than other fish species. All of the collected individuals of eight species (n=3-19) were toxic. Toxicity varied within species and among locations by up to 10000-fold. Cephalapholis argus and Gymnothorax spp. collected from Tarawa Island were significantly less toxic than those from Marakei Island, although all individuals were toxic based on the 0.01 ng g(-1) threshold. CTX concentrations in the livers of individuals of two moray eel species (Gymnothorax spp., n=6) were nine times greater than those in muscle, and toxicity in liver and muscle showed a strong positive correlation with body weight. The present study provides quantitative information on the ciguatoxicity and distribution of toxicity in fish for use in fisheries management and public health.

Authors+Show Affiliations

State Key Laboratory in Marine Pollution, Department of Biology and Chemistry, Academic Building, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong SAR.No affiliation info availableNo affiliation info availableNo 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

21397295

Citation

Chan, Wing Hei, et al. "Spatial Distribution of Ciguateric Fish in the Republic of Kiribati." Chemosphere, vol. 84, no. 1, 2011, pp. 117-23.
Chan WH, Mak YL, Wu JJ, et al. Spatial distribution of ciguateric fish in the Republic of Kiribati. Chemosphere. 2011;84(1):117-23.
Chan, W. H., Mak, Y. L., Wu, J. J., Jin, L., Sit, W. H., Lam, J. C., Sadovy de Mitcheson, Y., Chan, L. L., Lam, P. K., & Murphy, M. B. (2011). Spatial distribution of ciguateric fish in the Republic of Kiribati. Chemosphere, 84(1), 117-23. https://doi.org/10.1016/j.chemosphere.2011.02.036
Chan WH, et al. Spatial Distribution of Ciguateric Fish in the Republic of Kiribati. Chemosphere. 2011;84(1):117-23. PubMed PMID: 21397295.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Spatial distribution of ciguateric fish in the Republic of Kiribati. AU - Chan,Wing Hei, AU - Mak,Yim Ling, AU - Wu,Jia Jun, AU - Jin,Ling, AU - Sit,Wai Hung, AU - Lam,James Chung Wah, AU - Sadovy de Mitcheson,Yvonne, AU - Chan,Leo Lai, AU - Lam,Paul Kwan Sing, AU - Murphy,Margaret B, Y1 - 2011/03/11/ PY - 2010/10/20/received PY - 2011/02/02/revised PY - 2011/02/15/accepted PY - 2011/3/15/entrez PY - 2011/3/15/pubmed PY - 2011/7/30/medline SP - 117 EP - 23 JF - Chemosphere JO - Chemosphere VL - 84 IS - 1 N2 - Ciguatera is food poisoning caused by human consumption of reef fish contaminated with ciguatoxins (CTXs). The expanding international trade of tropical fish species from ciguatera-endemic regions has resulted in increased global incidence of ciguatera, and more than 50000 people are estimated to suffer from ciguatera each year worldwide. The Republic of Kiribati is located in the Pacific Ocean; two of its islands, Marakei and Tarawa, have been suggested as high-risk areas for ciguatera. The toxicities of coral reef fish collected from these islands, including herbivorous, omnivorous and carnivorous fish (24% [n=41], 8% [n=13] and 68% [n=117], respectively), were analyzed using the mouse neuroblastoma assay (MNA) after CTX extraction. The MNA results indicated that 156 fish specimens, or 91% of the fish samples, were ciguatoxic (CTX levels >0.01 ng g(-1)). Groupers and moray eels were generally more toxic by an order of magnitude than other fish species. All of the collected individuals of eight species (n=3-19) were toxic. Toxicity varied within species and among locations by up to 10000-fold. Cephalapholis argus and Gymnothorax spp. collected from Tarawa Island were significantly less toxic than those from Marakei Island, although all individuals were toxic based on the 0.01 ng g(-1) threshold. CTX concentrations in the livers of individuals of two moray eel species (Gymnothorax spp., n=6) were nine times greater than those in muscle, and toxicity in liver and muscle showed a strong positive correlation with body weight. The present study provides quantitative information on the ciguatoxicity and distribution of toxicity in fish for use in fisheries management and public health. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/21397295/Spatial_distribution_of_ciguateric_fish_in_the_Republic_of_Kiribati_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(11)00182-2 DB - PRIME DP - Unbound Medicine ER -