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Article: Trace metals and organochlorines in the bamboo shark Chiloscyllium plagiosum from the southern waters of Hong Kong, China

TitleTrace metals and organochlorines in the bamboo shark Chiloscyllium plagiosum from the southern waters of Hong Kong, China
Authors
KeywordsChiloscyllium plagiosum
Ecological risk
Marine pollution
Seafood safety
Issue Date2007
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv
Citation
Science Of The Total Environment, 2007, v. 376 n. 1-3, p. 335-345 How to Cite?
AbstractThe bamboo shark Chiloscyllium plagiosum is an abundant benthic species along the shallow continental shelf of Southeast Asia. It is commonly taken by fishermen in China, India, Taiwan and Thailand for human consumption. This study measured trace metal and organochlorine concentrations in C. plagiosum collected from the southern waters of Hong Kong, China. Metals (Ag, Cd, Cr, Cu, Mn, Ni, Pb and Zn) were measured in three different tissues: dorsal muscle, spleen and liver. Polychlorinated biphenyls (PCBs) and chlorinated pesticides in the dorsal muscle were identified and quantified using gas chromatography. Metal concentrations varied among the three different tissues, with liver having higher levels of Ag and Cd, and spleen possessing higher levels of Cu and Mn. Both Ni and Pb in all tissues were below the detection limit. Tissue concentrations of Cr, Cu, Mn and Zn generally decreased with increasing body weight whilst no significant concentration-size relationship was found for other metals. In muscle tissues, total PCBs ranged from 1.056-4.771 ng/g (wet wt.) with a median of 1.801 ng/g, while total DDTs ranged from 0.602-23.55 ng/g with a median of 1.109 ng/g, in which p,p′-DDE was the predominant metabolite. Levels of total hexachlorohexanes and cyclodienes were low. The pesticide p,p′-DDT was the only compound found to be positively correlated with body weight, indicating temporal bioaccumulation of this compound. Zn concentrations in the muscle of C. plagiosum were comparatively higher than recorded in other shark species, however, concentrations of other metals and organochlorines were relatively low. C. plagiosum feeds primarily on polychaetes, shrimps and small fishes, and thus is unlikely to contain levels of contaminants of human health concern. © 2007 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/73147
ISSN
2015 Impact Factor: 3.976
2015 SCImago Journal Rankings: 1.702
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCornish, ASen_HK
dc.contributor.authorNg, WCen_HK
dc.contributor.authorHo, VCMen_HK
dc.contributor.authorWong, HLen_HK
dc.contributor.authorLam, JCWen_HK
dc.contributor.authorLam, PKSen_HK
dc.contributor.authorLeung, KMYen_HK
dc.date.accessioned2010-09-06T06:48:36Z-
dc.date.available2010-09-06T06:48:36Z-
dc.date.issued2007en_HK
dc.identifier.citationScience Of The Total Environment, 2007, v. 376 n. 1-3, p. 335-345en_HK
dc.identifier.issn0048-9697en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73147-
dc.description.abstractThe bamboo shark Chiloscyllium plagiosum is an abundant benthic species along the shallow continental shelf of Southeast Asia. It is commonly taken by fishermen in China, India, Taiwan and Thailand for human consumption. This study measured trace metal and organochlorine concentrations in C. plagiosum collected from the southern waters of Hong Kong, China. Metals (Ag, Cd, Cr, Cu, Mn, Ni, Pb and Zn) were measured in three different tissues: dorsal muscle, spleen and liver. Polychlorinated biphenyls (PCBs) and chlorinated pesticides in the dorsal muscle were identified and quantified using gas chromatography. Metal concentrations varied among the three different tissues, with liver having higher levels of Ag and Cd, and spleen possessing higher levels of Cu and Mn. Both Ni and Pb in all tissues were below the detection limit. Tissue concentrations of Cr, Cu, Mn and Zn generally decreased with increasing body weight whilst no significant concentration-size relationship was found for other metals. In muscle tissues, total PCBs ranged from 1.056-4.771 ng/g (wet wt.) with a median of 1.801 ng/g, while total DDTs ranged from 0.602-23.55 ng/g with a median of 1.109 ng/g, in which p,p′-DDE was the predominant metabolite. Levels of total hexachlorohexanes and cyclodienes were low. The pesticide p,p′-DDT was the only compound found to be positively correlated with body weight, indicating temporal bioaccumulation of this compound. Zn concentrations in the muscle of C. plagiosum were comparatively higher than recorded in other shark species, however, concentrations of other metals and organochlorines were relatively low. C. plagiosum feeds primarily on polychaetes, shrimps and small fishes, and thus is unlikely to contain levels of contaminants of human health concern. © 2007 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenven_HK
dc.relation.ispartofScience of the Total Environmenten_HK
dc.rightsScience of the Total Environment. Copyright © Elsevier BV.en_HK
dc.subjectChiloscyllium plagiosumen_HK
dc.subjectEcological risken_HK
dc.subjectMarine pollutionen_HK
dc.subjectSeafood safetyen_HK
dc.titleTrace metals and organochlorines in the bamboo shark Chiloscyllium plagiosum from the southern waters of Hong Kong, Chinaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0048-9697&volume=376 &spage=335&epage=345&date=2007&atitle=Trace+metals+and+organochlorines+in+the+bamboo+shark+Chiloscyllium+plagiosum+from+the+southern+waters+of+Hong+Kong,+Chinaen_HK
dc.identifier.emailLeung, KMY: kmyleung@hku.hken_HK
dc.identifier.authorityLeung, KMY=rp00733en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.scitotenv.2007.01.070en_HK
dc.identifier.pmid17320935en_HK
dc.identifier.scopuseid_2-s2.0-33947289984en_HK
dc.identifier.hkuros130330en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33947289984&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume376en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage335en_HK
dc.identifier.epage345en_HK
dc.identifier.isiWOS:000245776400030-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridCornish, AS=7006637048en_HK
dc.identifier.scopusauthoridNg, WC=24723024100en_HK
dc.identifier.scopusauthoridHo, VCM=16042170700en_HK
dc.identifier.scopusauthoridWong, HL=10839061900en_HK
dc.identifier.scopusauthoridLam, JCW=24178129400en_HK
dc.identifier.scopusauthoridLam, PKS=7202365776en_HK
dc.identifier.scopusauthoridLeung, KMY=7401860738en_HK

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