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Article: Spatial distribution of ciguateric fish in the Republic of Kiribati

TitleSpatial distribution of ciguateric fish in the Republic of Kiribati
Authors
KeywordsCiguatera
Coral reef fish
Moray eel
Mouse neuroblastoma assay
Republic of Kiribati
Spatial distribution
Issue Date2011
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphere
Citation
Chemosphere, 2011, v. 84 n. 1, p. 117-123 How to Cite?
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 >0.01ngg -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 0.01ngg -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. © 2011 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/140897
ISSN
2013 Impact Factor: 3.499
2013 SCImago Journal Rankings: 1.746
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of the Hong Kong Special Administrative Region, ChinaU3/CRF/08
State Key Laboratory of Marine Environmental Science (Xiamen University)MEL0607
University of Hong Kong
Funding Information:

We thank Mr. Being Yeeting (Senior Fisheries Scientist, Secretariat of the Pacific Community, New Caledonia) and the Fisheries Division (Ministry of Fisheries and Marine Resource Development, Republic of Kiribati) for facilitating the sample collection. We thank Ms. Rachel P.P. Wong for identification of fish species and Mr. Albert C.C. Au, Mr. Xiwen Jiang, Mr. Minghua Wang and Mr. Yue Gao (School of Biological Science, The University of Hong Kong) for technical assistance. The work described in this paper was supported by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (City U3/CRF/08), State Key Laboratory of Marine Environmental Science (Xiamen University) cooperative Project (MEL0607) and a Science Faculty Collaborative Seed Grant from the University of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorChan, WHen_HK
dc.contributor.authorMak, YLen_HK
dc.contributor.authorWu, JJen_HK
dc.contributor.authorJin, Len_HK
dc.contributor.authorSit, WHen_HK
dc.contributor.authorLam, JCWen_HK
dc.contributor.authorSadovy de Mitcheson, Yen_HK
dc.contributor.authorChan, LLen_HK
dc.contributor.authorLam, PKSen_HK
dc.contributor.authorMurphy, MBen_HK
dc.date.accessioned2011-09-23T06:21:13Z-
dc.date.available2011-09-23T06:21:13Z-
dc.date.issued2011en_HK
dc.identifier.citationChemosphere, 2011, v. 84 n. 1, p. 117-123en_HK
dc.identifier.issn0045-6535en_HK
dc.identifier.urihttp://hdl.handle.net/10722/140897-
dc.description.abstractCiguatera 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 >0.01ngg -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 0.01ngg -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. © 2011 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphereen_HK
dc.relation.ispartofChemosphereen_HK
dc.subjectCiguateraen_HK
dc.subjectCoral reef fishen_HK
dc.subjectMoray eelen_HK
dc.subjectMouse neuroblastoma assayen_HK
dc.subjectRepublic of Kiribatien_HK
dc.subjectSpatial distributionen_HK
dc.subject.meshCiguatera Poisoning - epidemiology-
dc.subject.meshCiguatoxins - metabolism - toxicity-
dc.subject.meshFishes - metabolism-
dc.subject.meshLiver - drug effects - metabolism-
dc.subject.meshPoisons - metabolism - toxicity-
dc.titleSpatial distribution of ciguateric fish in the Republic of Kiribatien_HK
dc.typeArticleen_HK
dc.identifier.emailSadovy de Mitcheson, Y: yjsadovy@hkucc.hku.hken_HK
dc.identifier.authoritySadovy de Mitcheson, Y=rp00773en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.chemosphere.2011.02.036en_HK
dc.identifier.pmid21397295en_HK
dc.identifier.scopuseid_2-s2.0-79956124760en_HK
dc.identifier.hkuros194710en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79956124760&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume84en_HK
dc.identifier.issue1en_HK
dc.identifier.spage117en_HK
dc.identifier.epage123en_HK
dc.identifier.isiWOS:000292416400016-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChan, WH=34871462100en_HK
dc.identifier.scopusauthoridMak, YL=37011332400en_HK
dc.identifier.scopusauthoridWu, JJ=37103028100en_HK
dc.identifier.scopusauthoridJin, L=47461258400en_HK
dc.identifier.scopusauthoridSit, WH=8528923000en_HK
dc.identifier.scopusauthoridLam, JCW=24178129400en_HK
dc.identifier.scopusauthoridSadovy de Mitcheson, Y=6603830002en_HK
dc.identifier.scopusauthoridChan, LL=35757489200en_HK
dc.identifier.scopusauthoridLam, PKS=7202365776en_HK
dc.identifier.scopusauthoridMurphy, MB=7403900446en_HK
dc.identifier.citeulike9075952-

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