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Conference Paper: Toxicity of antifouling biocides to the intertidal harpacticoid copepod Tigriopus japonicus (Crustacea, Copepoda): Effects of temperature and salinity

TitleToxicity of antifouling biocides to the intertidal harpacticoid copepod Tigriopus japonicus (Crustacea, Copepoda): Effects of temperature and salinity
Authors
KeywordsAntifouling
Hong Kong
Lethal concentration
Metals
Organotins
Issue Date2005
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbul
Citation
The 4th International Conference on Marie Pollution & Ecotoxicology, the City University of Hong Kong, Hong Kong, 1-5 June 2004. In Marine Pollution Bulletin, 2005, v. 51 n. 8-12, p. 830-837 How to Cite?
AbstractIntertidal harpacticoid copepods are commonly used in eco-toxicity tests worldwide. They predominately live in mid-high shore rock pools and often experience a wide range of temperature and salinity fluctuation. Most eco-toxicity tests are conducted at fixed temperature and salinity and thus the influence of these environmental factors on chemical toxicity is largely unknown. This study investigated the combined effect of temperature and salinity on the acute toxicity of the copepod Tigriopus japonicus against two common biocides, copper (Cu) and tributyltin (TBT) using a 2 × 3 × 4 factorial design (i.e. two temperatures: 25 and 35°C; three salinities: 15.0‰, 34.5‰ and 45.0‰; three levels of the biocide plus a control). Copper sulphate and tributyltin chloride were used as the test chemicals while distilled water and acetone were utilised as solvents for Cu and TBT respectively. 96h-LC50s of Cu and TBT were 1024 and 0.149 μg l -1 respectively (at 25°C; 34.5‰) and, based on these results, nominal biocide concentrations of LC0 (i.e. control), LC30, LC50 and LC70 were employed. Analysis of Covariance using 'concentration' as the covariate and both 'temperature' and 'salinity' as fixed factors, showed a significant interaction between temperature and salinity effects for Cu, mortality increasing with temperature but decreasing with elevated salinity. A similar result was revealed for TBT. Both temperature and salinity are, therefore, important factors affecting the results of acute eco-toxicity tests using these marine copepods. We recommend that such eco-toxicity tests should be conducted at a range of environmentally realistic temperature/salinity regimes, as this will enhance the sensitivity of the test and improve the safety margin in line with the precautionary principle. © 2005 Elsevier Ltd. All rights reserved.
DescriptionThese journal issues entitled: 4th International Conference on Marine Pollution and Ecotoxicology, 4th International Conference on Marine Pollution and Ecotoxicology
Persistent Identifierhttp://hdl.handle.net/10722/73209
ISSN
2015 Impact Factor: 3.099
2015 SCImago Journal Rankings: 1.264
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorKwok, KWHen_HK
dc.contributor.authorLeung, KMYen_HK
dc.date.accessioned2010-09-06T06:49:10Z-
dc.date.available2010-09-06T06:49:10Z-
dc.date.issued2005en_HK
dc.identifier.citationThe 4th International Conference on Marie Pollution & Ecotoxicology, the City University of Hong Kong, Hong Kong, 1-5 June 2004. In Marine Pollution Bulletin, 2005, v. 51 n. 8-12, p. 830-837en_HK
dc.identifier.issn0025-326Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/73209-
dc.descriptionThese journal issues entitled: 4th International Conference on Marine Pollution and Ecotoxicology, 4th International Conference on Marine Pollution and Ecotoxicology-
dc.description.abstractIntertidal harpacticoid copepods are commonly used in eco-toxicity tests worldwide. They predominately live in mid-high shore rock pools and often experience a wide range of temperature and salinity fluctuation. Most eco-toxicity tests are conducted at fixed temperature and salinity and thus the influence of these environmental factors on chemical toxicity is largely unknown. This study investigated the combined effect of temperature and salinity on the acute toxicity of the copepod Tigriopus japonicus against two common biocides, copper (Cu) and tributyltin (TBT) using a 2 × 3 × 4 factorial design (i.e. two temperatures: 25 and 35°C; three salinities: 15.0‰, 34.5‰ and 45.0‰; three levels of the biocide plus a control). Copper sulphate and tributyltin chloride were used as the test chemicals while distilled water and acetone were utilised as solvents for Cu and TBT respectively. 96h-LC50s of Cu and TBT were 1024 and 0.149 μg l -1 respectively (at 25°C; 34.5‰) and, based on these results, nominal biocide concentrations of LC0 (i.e. control), LC30, LC50 and LC70 were employed. Analysis of Covariance using 'concentration' as the covariate and both 'temperature' and 'salinity' as fixed factors, showed a significant interaction between temperature and salinity effects for Cu, mortality increasing with temperature but decreasing with elevated salinity. A similar result was revealed for TBT. Both temperature and salinity are, therefore, important factors affecting the results of acute eco-toxicity tests using these marine copepods. We recommend that such eco-toxicity tests should be conducted at a range of environmentally realistic temperature/salinity regimes, as this will enhance the sensitivity of the test and improve the safety margin in line with the precautionary principle. © 2005 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/marpolbulen_HK
dc.relation.ispartofMarine Pollution Bulletinen_HK
dc.subjectAntifoulingen_HK
dc.subjectHong Kongen_HK
dc.subjectLethal concentrationen_HK
dc.subjectMetalsen_HK
dc.subjectOrganotinsen_HK
dc.titleToxicity of antifouling biocides to the intertidal harpacticoid copepod Tigriopus japonicus (Crustacea, Copepoda): Effects of temperature and salinityen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0025-326X&volume=51&spage=830&epage=837&date=2005&atitle=Toxicity+of+antifouling+biocides+to+the+intertidal+harpacticoid+copepod+Tigriopus+japonicus+(Crustacea,+Copepoda):+effects+of+temperature+and+salinityen_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.marpolbul.2005.02.036en_HK
dc.identifier.pmid16291193-
dc.identifier.scopuseid_2-s2.0-22344454137en_HK
dc.identifier.hkuros89043en_HK
dc.identifier.hkuros112856-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-22344454137&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume51en_HK
dc.identifier.issue8-12en_HK
dc.identifier.spage830en_HK
dc.identifier.epage837en_HK
dc.identifier.isiWOS:000234079700026-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKwok, KWH=19337480200en_HK
dc.identifier.scopusauthoridLeung, KMY=7401860738en_HK
dc.customcontrol.immutablesml 151013 - merged-

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