PCBs in Fish and Their Cestode Parasites in Lake Victoria.

dc.contributor.authorOyoo-Okoth, Elijah
dc.contributor.authorOluoch-Otiego, John
dc.contributor.authorKipkorir, Koross Godfrey Kiptoo
dc.contributor.authorChemoiwa, Emily J.
dc.contributor.authorNgugi, Charles C.
dc.contributor.authorSimiyu, Gelas
dc.contributor.authorOmutange, Elijah S.
dc.contributor.authorNgure, Veronica
dc.contributor.authorOpiyo, Mary A.
dc.date.accessioned2025-04-10T13:27:58Z
dc.date.available2025-04-10T13:27:58Z
dc.date.issued2016
dc.descriptionJournal Article
dc.description.abstractPolychlorinatedbiphenyls(PCBs)areclassified as persistent organic pollutants (POPs) regulated by the Stockholm Convention (2001). Although their production and use was stopped almost three decades ago, PCBs are environmental persistent, toxic, and bioaccumulate in biota. We assessed the levels of 7 PCB congeners (IUPAC nos. 28, 52, 101, 118, 138, 153, and 180) in sediment and fish (Oreochromis niloticus, Lates niloticus, and Rastrineobola argentea) and evaluated the potential of cestode fish endoparasite (Monobothrioides sp., Proteocephalaus sp., and Ligula intestinalis) as concentration of Σ7PCBs in sediments and fish were 2.2– 96.3 μg/kg dw and 300–3,000 μg/kg lw, respectively. At all the sampling sites, CB138, CB153, and CB180 were the dominant PCB congeners in sediment and fish samples. Compared to the muscle of the piscine host, Proteocephalaus sp. (infecting L. niloticus) biomagnified PCBs ×6–14 while Monobothrioides sp. (infecting O. niloticus) biomagnified PCBs ×4–8. Meanwhile, L. intestinalis (infecting R. argentea) biomagnified PCBs ×8–16 compared to the muscle of unparasitized fish. We demonstrate the occurrence of moderate to high levels of PCB in sediments and fish in Lake Victoria. We also provide evidence that fish parasites bioaccumulate higher levels of PCBs than their piscine hosts and therefore provide a promising biomonitor of PCBs. We urge further a long-term study to validate the use of the above cestode fish parasites as biomonitoring tools for PCBs.
dc.identifier.citationOyoo-Okoth, E., Oluoch-Otiego, J., Kipkorir, K. G. K., Chemoiwa, E. J., Ngugi, C. C., Simiyu, G., Omutange, E. S., Ngure, V., Opiyo, M. A. (2016). PCBs in Fish and Their Cestode Parasites in Lake Victoria. Environmental Monitoring and Assessment
dc.identifier.issn0167-6369
dc.identifier.urihttps://repository.daystar.ac.ke/handle/123456789/6611
dc.language.isoen
dc.publisherEnvironmental Monitoring and Assessment.
dc.relation.ispartofseries(188)8
dc.subjectPCBs. Bioaccumulation
dc.subjectParasite
dc.subjectLipid content
dc.subjectBiomagnification
dc.subjectLakeVictoria
dc.titlePCBs in Fish and Their Cestode Parasites in Lake Victoria.
dc.typeArticle

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