Histopathological changes in two potential indicator fish species from a hyper-eutrophic freshwater ecosystem in South Africa : a baseline study

dc.contributor.authorMarchand, M.J.
dc.contributor.authorVan Dyk, Jacobus C.
dc.contributor.authorBarnhoorn, Irene E.J.
dc.contributor.authorWagenaar, G.M.
dc.date.accessioned2012-09-12T06:54:50Z
dc.date.available2012-10-31T00:20:03Z
dc.date.issued2012
dc.description.abstractHistopatholigical changes were identified in selected target organs from two freshwater fish species, Clarias gariepinus and Oreochromis mossambicus, inhabiting a hyper-eutrophic freshwater aquatic system. The approach was to use a histology-based fish health assessment protocol which included a semi-quantitative histopathological assessment of six target organs (gills, liver, ovaries, testes, kidney, and heart). Results of water quality analysis showed selected variables to be above the recommended levels including pH, ammonia, nitrogen, chloride, and phosphorus. A number of histopathological alterations were identified in the target organs of both species, with the highest number observed in the liver. Species differences were identified in terms of the severity of the alterations within all the organs, with most alterations being regressive in nature. The results of this study provide valuable baseline data for two indicator species inhabiting a hyper-eutrophic system that could be useful for future bio-monitoring studies.en_US
dc.description.sponsorshipThe National Research Foundation of South Africaen_US
dc.description.urihttp://tandfonline.com/loi/taas20en_US
dc.identifier.citationMJ Marchand, JC van Dyk, IEJ Barnhoorn & GM Wagenaar (2012): Histopathological changes in two potential indicator fish species from a hyper-eutrophic freshwater ecosystem in South Africa : a baseline study', African Journal of Aquatic Science, vol. 37, no. 1, pp. 38-48.en_US
dc.identifier.issn1608-5914(print)
dc.identifier.issn1727-9364 (online)
dc.identifier.other10.2989/16085914.2011.636902
dc.identifier.urihttp://hdl.handle.net/2263/19747
dc.language.isoenen_US
dc.publisherTaylor & Francisen_US
dc.rights© NISC (Pty) Ltden_US
dc.subjectBiononitoringen_US
dc.subjectClarias gariepinusen_US
dc.subjectHistologyen_US
dc.subjectOreochromis mossambicusen_US
dc.subjectRoodeplaat Damen_US
dc.titleHistopathological changes in two potential indicator fish species from a hyper-eutrophic freshwater ecosystem in South Africa : a baseline studyen_US
dc.typePostprint Articleen_US

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