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dc.contributor.authorHafez, Tamer
dc.contributor.authorBilbao Alemany, Dennis
dc.contributor.authorEtxebarria Loizate, Nestor
dc.contributor.authorDuran, Robert
dc.contributor.authorOrtiz Zarragoitia, Maren
dc.date.accessioned2021-07-19T11:05:31Z
dc.date.available2021-07-19T11:05:31Z
dc.date.issued2021-06-01
dc.identifier.citationMarine Environmental Research 169 : (2021) // Article ID 105378es_ES
dc.identifier.issn1879-0291
dc.identifier.urihttp://hdl.handle.net/10810/52509
dc.description.abstractAbstract Copepods play a critical role in the marine food webs, being a food source for marine organisms. In this study, we investigated the toxic effects of Water Accommodated Fractions (WAFs) from three types of oil: Naphthenic North Sea crude oil (NNS), Intermediate Fuel Oil (IFO 180) and a commercial Marine Gas Oil (MGO). The WAFs were prepared at 10°C and 30 PSU (practical salinity unit), and tested on the marine copepod Acartia tonsa at different endpoints and at different levels of biological organization. We determined the median lethal concentrations after 96h (LC50) and reproduction capabilities were calculated in adult females following seven days of exposure to sublethal WAF doses. The total lipid content was measured in reproductive females using Nile red lipophilic dye after 96h of WAF exposure. We also measured the transcription levels of genes involved in antioxidant response and xenobiotic biotransformation after short exposure for 48h. High doses (7% WAF) of MGO affected survival, percentage of fecund females, egg hatching success, and total lipid content. The IFO 180 WAF affected, at medium (20%) and high (40%) doses, the number of fecund females, mortality and produced significant effects on gene expression levels. In conclusion, toxicity assays showed that the WAFs prepared from refined oils were more toxic than crude oil WAF to Acartia tonsa.es_ES
dc.description.sponsorshipThis work was funded by the Basque Government (grant to consolidated research groups IT1302-19) and the European Union (GRACE project, EU Horizon 2020 grant No 679266). The University of the Basque Country supported TH with a cotutelle (co-supervision) doctoral grant with the Universté de Pau et des Pays de l'Adoures_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/679266es_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectacartia tonsaes_ES
dc.subjectfecundityes_ES
dc.subjectgene expressiones_ES
dc.subjectLC50es_ES
dc.subjectoil water acommodated fractionses_ES
dc.subjecttotal lipidses_ES
dc.titleApplication of a Biological Multilevel Response Approach in the Copepod Acartia Tonsa for Toxicity Testing of Three Oil Water Accommodated Fractionses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.rights.holderThis is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC-ND 4.0)es_ES
dc.rights.holderAtribución-NoComercial-SinDerivadas 3.0 España*
dc.relation.publisherversionhttps://www-sciencedirect-com.ehu.idm.oclc.org/science/article/pii/S0141113621001343?via%3Dihub#!es_ES
dc.identifier.doi10.1016/j.marenvres.2021.105378
dc.contributor.funderEuropean Commission
dc.departamentoesQuímica analíticaes_ES
dc.departamentoesZoología y biología celular animales_ES
dc.departamentoeuKimika analitikoaes_ES
dc.departamentoeuZoologia eta animalia zelulen biologiaes_ES


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This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC-ND 4.0)
Except where otherwise noted, this item's license is described as This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY-NC-ND 4.0)