Steatitis in wild sharptooth catfish, Clarias gariepinus (Burchell), in the Olifants and Lower Letaba rivers in the Kruger National Park, South Africa

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dc.contributor.author Huchzermeyer, Karl David August
dc.contributor.author Govender, Dhanashree (Danny)
dc.contributor.author Pienaar, Daniel J.
dc.contributor.author Deacon, A.R.
dc.date.accessioned 2012-05-24T08:09:04Z
dc.date.available 2012-07-31T00:20:03Z
dc.date.issued 2011-07
dc.description.abstract Large numbers of adult Nile crocodiles, Crocodylus niloticus (Laurenti), died from pansteatitis during autumn and winter 2008 in the lower Letaba and Olifants River gorge in the Kruger National Park, South Africa. Consequently, the health status of fish from these waters was investigated. The study presents the pathological findings in fish inhabiting these rivers within the boundaries of the Park. Changes typical of steatitis were diagnosed in many of the larger specimens of sharptooth catfish, Clarias gariepinus (Burchell), caught within the Olifants River gorge. These fish carried large amounts of mesenteric fat with characteristic small brown granulomata within the adipose tissue. Necrosis and inflammation of the adipose tissues, with characteristic ceroid accumulation within the resultant granulomata and the associated aggregation of ceroid-containing macrophages, were demonstrated histologically and were typical of steatitis. Other changes included mild thickening and pallor of the gill tissues and swollen, orange, fatty livers. Focal hepatic lipidosis was demonstrated histologically, and special stains revealed storage of large amounts of iron in the livers. Blood smears revealed chromatin clumping in erythrocyte nuclei and nuclear and cell membrane irregularities. This is the first record of steatitis in wild-caught C. gariepinus. en
dc.description.librarian mn2012 en
dc.description.sponsorship The Water Research Commission, South Africa, Consultancy K8/948. en
dc.description.uri http://www.wiley.com/bw/journal.asp?ref=0140-7775 en
dc.identifier.citation Huchzermeyer, KDA, Govender, D, Pienaar, DJ & Deacon, AR 2011, 'Steatitis in wild sharptooth catfish, Clarias gariepinus (Burchell), in the Olifants and Lower Letaba rivers in the Kruger National Park, South Africa', Journal of Fish Diseases, vol. 34, no. 7, pp. 489-498. en
dc.identifier.issn 0140-7775 (print)
dc.identifier.issn 1365-2761 (online)
dc.identifier.other 10.1111/j.1365-2761.2011.01267.x
dc.identifier.uri http://hdl.handle.net/2263/18864
dc.language.iso en en
dc.publisher Wiley-Blackwell en
dc.rights © 2011 Blackwell Publishing Ltd. This is the pre-peer reviewed version of the following article: Huchzermeyer, KDA, Govender, D, Pienaar, DJ & Deacon, AR 2011, 'Steatitis in wild sharptooth catfish, Clarias gariepinus (Burchell), in the Olifants and Lower Letaba rivers in the Kruger National Park, South Africa', Journal of Fish Diseases, vol. 34, no. 7, pp. 489-498., which has been published in final form at http://www.wiley.com/bw/journal.asp?ref=0140-7775. en
dc.subject Clarias gariepinus en
dc.subject Crocodiles en
dc.subject Fat en
dc.subject Kruger National Park (KNP) en
dc.subject Olifants River en
dc.subject Steatitis en
dc.subject.lcsh Catfishes -- South Africa en
dc.subject.lcsh Siluridae -- South Africa en
dc.subject.lcsh Nile crocodile -- South Africa en
dc.subject.lcsh Wildlife diseases -- South Africa en
dc.subject.lcsh Fishes -- Diseases en
dc.title Steatitis in wild sharptooth catfish, Clarias gariepinus (Burchell), in the Olifants and Lower Letaba rivers in the Kruger National Park, South Africa en
dc.type Preprint Article en


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