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Turkish Journal of Fisheries and Aquatic Sciences 2011, Vol 11, Num, 1     (Pages: 37-43)

Histological Changes in Oreochromis niloticus (Linnaeus I779) Exposed to Aqueous Extract of Moringa oleifera Seeds Powder

E.O. Ayotunde 1 ,O.A. Fagbenro 2 ,O.T. Adebayo 2

1 Cross River University of Technology, Department of Fisheries, PMB 102, Obubra. Cross River State, Nigeria
2 Federal University of Technology, Department of Fisheries and Wildlife, PMB 704 Akure, Ondo State, Nigeria
DOI : 10.4194/trjfas.2011.0106 Viewed : 4391 - Downloaded : 6178 This research determined the pathological effects of Moringa oleifera seed powder, a natural alternative to alum, used as a water purifier in fish culture enclosure in Nigeria. The histological changes in gill, liver, skin and kidney of fingerling and adult Nile tilapia Oreochromis niloticus exposed to aqueous extract of Moringa oleifera seed at different sub-lethal concentration under static bioassay procedure are described. There were pathologic lesions observed which included different levels of cells degeneration in the gill, lamellar hyperemia; hypertrophy of gill arch occurred, while hyperplasia, disarrangement of hepatic cell, necrosis, and vacuolation occurred in fish liver and kidney. Damages of different organs became severe with increasing concentration of aqueous extract of M. oleifera seeds and time of exposure. Keywords : Histology, Moringa oleifera, Nile tilapia, water quality