Levels and patterns of persistent organic pollutants (POPs) in tilapia (Oreochromis sp.) from four different lakes in Tanzania: Geographical differences and implications for human health

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dc.contributor.authorLie, Elisabeth
dc.contributor.authorPolder, A.
dc.contributor.authorMüller, M. B.
dc.contributor.authorLyche, J. L.
dc.contributor.authorMdegela, R. H.
dc.contributor.authorNonga, H. E.
dc.contributor.authorMabiki, F.
dc.contributor.authorMbise, T. J.
dc.contributor.authorSkaare, J. U.
dc.contributor.authorSandvik, M.
dc.contributor.authorSkjerve, E.
dc.contributor.authorLie, E.
dc.date.accessioned2018-07-16T07:05:32Z
dc.date.available2018-07-16T07:05:32Z
dc.date.issued2014-04-22
dc.descriptionScience of the total environment, 2014; 488-489:252-260en_US
dc.description.abstractIn Tanzania fish is one of the most important protein sources for the rapidly increasing population. Wild fish is threatened by overfishing and pollution from agriculture, industries, mining, household effluents and vector control. Tomonitor possible implications for public health, the geographical differences of the occurrence and levels of persistent organic pollutants (POPs) in tilapia fish (Oreochromis sp.) from four different Tanzanian lakes were investigated in 2011. Concentrations of organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), polybrominated diphenyls (PBDEs) and hexabromocyclododecane (HBCDD) were determined in pooled samples of tilapia muscle from Lake (L) Victoria, L. Tanganyika, L. Nyasa (also called L. Malawi) and L. Babati in Tanzania in 2011. Levels of Σ-DDTs (274 ng/g lipid weight (lw)) and sum of 7 indicator PCBs (Σ-7PCBs) (17 ng/g lw) were significantly higher in tilapia from L. Tanganyika compared to the other lakes. The highest levels of Σ-endosulfan (94 ng/g lw) were detected in tilapia from L. Victoria. Toxaphenes were detected in low levels in fish from L. Tanganyika and L. Babati. Results revealed a geographic difference in the use of DDT and endosulfan between L. Victoria and L. Tanganyika. Low ratios of DDE/DDT in tilapia from L. Tanganyika indicated an on-going use of DDT in the area. Median levels of ΣBDEs, including BDE-209, were highest in L. Victoria (19.4 ng/g lw) and BDE- 209 was present in 68% of the samples from this lake. The presence of BDE-209 indicates increasing influence of imported products from heavy industrialized countries. The measured POP levels in the studied tilapia were all below MRLs of EU or were lower than recommended levels, and thus the fish is considered as safe for human consumption. They may, however, pose a risk to the fish species and threaten biodiversity.en_US
dc.description.sponsorshipResearch Council of Norway (NFR nr: 204051).en_US
dc.identifier.urihttps://www.suaire.sua.ac.tz/handle/123456789/2525
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectTilapiaen_US
dc.subjectPersistent organic pollutantsen_US
dc.subjectPOPsen_US
dc.subjectPCBsen_US
dc.subjectDDTsen_US
dc.subjectBFRsen_US
dc.subjectTanzaniaen_US
dc.titleLevels and patterns of persistent organic pollutants (POPs) in tilapia (Oreochromis sp.) from four different lakes in Tanzania: Geographical differences and implications for human healthen_US
dc.typeArticleen_US
dc.urlhttps://www.ncbi.nlm.nih.gov/pubmed/24836134en_US

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