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Article: Polybrominated diphenylethers (PBDEs) alter larval settlement of marine benthic polychaetes

TitlePolybrominated diphenylethers (PBDEs) alter larval settlement of marine benthic polychaetes
Authors
Issue Date2010
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/est
Citation
Environmental Science And Technology, 2010, v. 44 n. 18, p. 7130-7137 How to Cite?
Abstract
Polybrominated diphenylethers (PBDEs) are found ubiquitously in marine environments worldwide. Sediment is the major sink of PBDEs, with the congener BDE 47 being most abundant. In this study, laboratory experiments were carried out to test the hypothesis that contamination of BDE 47 at environmentally realistic sediment concentrations can alter polychaete larval settlement. Using multiple-choice experiment, settlement of three polychaete species (Pseudopolydora vexillosa, Polydora cornuta, and Capitella sp. I) on four types of spiked sediment was studied and compared: (i) low BDE 47 concentration (0.5 ng g -1 dry weight); (ii) high BDE 47 concentration (3.0 ng g -1 dry weight), (iii) hexane (solvent control), and (iv) natural sediment (control). Our results showed that settlement of P. vexillosa and Capitella sp. I larvae was significantly promoted, while settlement of P. cornuta reduced, at high BDE 47 concentration in sediment compared with the respective controls under both short- (24 h) and long-term (4 week) exposures. After 4 weeks, body burden of BDE 47 in all polychaete species was directly related to the spike concentration, and body length of settled juveniles of P. vexillosa and Capitella sp. I at the high-concentration treatment was significantly longer compared with that of other treatments and controls. For the first time, we demonstrated that environmentally realistic concentrations of BDE 47 in sediment can affect polychaete settlement in species-specific and dose-dependent manners. Given the global contamination of PBDE in marine sediment, BDE 47 may potentially alter the settlement pattern of marine polychaetes and hence their benthic composition over large areas. © 2010 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/140879
ISSN
2013 Impact Factor: 5.481
ISI Accession Number ID
Funding AgencyGrant Number
University Grants Committee of the Hong Kong Special Administrative Region, ChinaAoE/P-04/04
Funding Information:

The work described in this paper was fully supported by a grant from the University Grants Committee of the Hong Kong Special Administrative Region, China (AoE/P-04/04). Special thanks to A. Chan and E. Lei for technical support for GC-MS analysis and W. Tse for helping with the multiple-choice settlement assays.

References

 

DC FieldValueLanguage
dc.contributor.authorLam, Cen_HK
dc.contributor.authorNeumann, Ren_HK
dc.contributor.authorShin, PKSen_HK
dc.contributor.authorAu, DWTen_HK
dc.contributor.authorQian, PYen_HK
dc.contributor.authorWu, RSSen_HK
dc.date.accessioned2011-09-23T06:20:50Z-
dc.date.available2011-09-23T06:20:50Z-
dc.date.issued2010en_HK
dc.identifier.citationEnvironmental Science And Technology, 2010, v. 44 n. 18, p. 7130-7137en_HK
dc.identifier.issn0013-936Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/140879-
dc.description.abstractPolybrominated diphenylethers (PBDEs) are found ubiquitously in marine environments worldwide. Sediment is the major sink of PBDEs, with the congener BDE 47 being most abundant. In this study, laboratory experiments were carried out to test the hypothesis that contamination of BDE 47 at environmentally realistic sediment concentrations can alter polychaete larval settlement. Using multiple-choice experiment, settlement of three polychaete species (Pseudopolydora vexillosa, Polydora cornuta, and Capitella sp. I) on four types of spiked sediment was studied and compared: (i) low BDE 47 concentration (0.5 ng g -1 dry weight); (ii) high BDE 47 concentration (3.0 ng g -1 dry weight), (iii) hexane (solvent control), and (iv) natural sediment (control). Our results showed that settlement of P. vexillosa and Capitella sp. I larvae was significantly promoted, while settlement of P. cornuta reduced, at high BDE 47 concentration in sediment compared with the respective controls under both short- (24 h) and long-term (4 week) exposures. After 4 weeks, body burden of BDE 47 in all polychaete species was directly related to the spike concentration, and body length of settled juveniles of P. vexillosa and Capitella sp. I at the high-concentration treatment was significantly longer compared with that of other treatments and controls. For the first time, we demonstrated that environmentally realistic concentrations of BDE 47 in sediment can affect polychaete settlement in species-specific and dose-dependent manners. Given the global contamination of PBDE in marine sediment, BDE 47 may potentially alter the settlement pattern of marine polychaetes and hence their benthic composition over large areas. © 2010 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/esten_HK
dc.relation.ispartofEnvironmental Science and Technologyen_HK
dc.subject.meshEnvironmental Monitoring-
dc.subject.meshGeologic Sediments - chemistry-
dc.subject.meshHalogenated Diphenyl Ethers - toxicity-
dc.subject.meshPolychaeta - anatomy and histology - drug effects - growth and development-
dc.subject.meshSeawater - parasitology-
dc.titlePolybrominated diphenylethers (PBDEs) alter larval settlement of marine benthic polychaetesen_HK
dc.typeArticleen_HK
dc.identifier.emailWu, RSS: rudolfwu@hku.hken_HK
dc.identifier.authorityWu, RSS=rp01398en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/es1012615en_HK
dc.identifier.pmid20726517en_HK
dc.identifier.scopuseid_2-s2.0-77956538459en_HK
dc.identifier.hkuros192058en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77956538459&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue18en_HK
dc.identifier.spage7130en_HK
dc.identifier.epage7137en_HK
dc.identifier.isiWOS:000281629800037-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLam, C=7402990723en_HK
dc.identifier.scopusauthoridNeumann, R=37026847100en_HK
dc.identifier.scopusauthoridShin, PKS=7004445653en_HK
dc.identifier.scopusauthoridAu, DWT=7004909228en_HK
dc.identifier.scopusauthoridQian, PY=35240648600en_HK
dc.identifier.scopusauthoridWu, RSS=7402945079en_HK

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