Journal of Fisheries and Aquatic Science1816-49271996-0751Academic Journals Inc.10.3923/jfas.2011.563.570Clarias gariepinus (Burchell 1822)]]>AdeyemoOlanike Kudirat AlarapeSelim Adewale EmikpeBenjamin Obukowho 5201165The reprotoxic effects of malachite green on Clarias gariepinus was investigated in this study. Male and female broodstock were exposed to malachite green preparation at 20 mg mL-1 stock solution dissolved in 20 L of well-aerated water for 45 min. After which fish were removed and placed in fresh water. Treatment was repeated every other day for three treatments; after which spawning was artificially induced. Malachite green had a significantly detrimental effect on reproduction outcome, including egg and milt quality and hatchability. Histological assessments revealed distorted and necrotic eggs, disrupted and depleted seminiferous tubules in the testes. Additionally, in other organs harvested from sacrificed male broodstock, there was local degeneration of the skin. The use of malachite green should be discouraged in Nigerian aquaculture industry by imposing and enforcing a ban on its usage. This is both necessary for sustainable aquaculture production and public health protection. Furthermore, the potential of alternative parasiticides, like humic acid and chlorine dioxide, should be explored to replace malachite green.]]>Abdel-Moneim, A.M., N.M. Abou Shabana, S.E.M. Khadre and H.H. Abdel-Kader, 2008Clarias lazera) exposed to dyestuff and chemical wastewater.]]>4189202Adeyemo, O.K. and O.O. Babalobi,200811982988Alderman, D.J. and R.S. Clifton-Hadley,1993Oncorhynchus mykiss (Walbaum).]]>16297311Burchmore, S. and M. Wilkinson,19931993Chang, C.F., C.H. Yang, Y.O. Shu, T.I. Chen, M.S. Shu and I.C. Liao,2001in vitro propagation of the Dinoflagellate parasite, Amylodinium ocellatum.]]>2001Culp, S.J. and F.A. Beland,199615219238Desciens, R. and J. Bablet,1994138838839Fernandes, C., V.S. Lalitha and K.V.K. Rao,1991N-nitrosodiethylamine in rats.]]>12839845Gouranchat, C.,20002000Kaijser, B., B. Torud and M. Sorgaard,2001282525Kiernan, J.A.,19902nd Edn.,Klein, E., M. Edelhauser and R. Lippold,19911991Meyer, F.P. and T.A. Jorgenson,1983112818824Omitoyin, B.O.,2007Clarias gariepinus juveniles (Burchell, 1822).]]>2422426Osman, M.M., S.A. El-Fiky, Y.M. Soheir and A.I Abeer,2009Oreochromis niloticus fish.]]>3923Rao, K.V.K.,199581107113Stentiford, G.D., M. Longshaw, B.P. Lyons, G. Jones, M. Green and S.W. Feist,200355137159Saglam, N., U. Ispir and M.E. Yonar,2003Oncorhynchus mykiss, Walbaum, 1792).]]>1212071210Samuel, O.B., O.Q. Suleiman and W.O. Odiete,2008Clarias gariepinus fry.]]>3280290Srivastava, S.J., N.D. Singh, R. Sinha and A.K. Srivastava,1998Heteropneustes fossilis (Bloch).]]>68253256Srivastava, S., R. Sinha and D. Roya,200466319329Venkataraman, G.V., P.N.S. Rani, N.S. Raju, S.T. Girisha and B.V. Raghavendra,2007Glossogobius giuris.]]>1115Zimmerli, S., D. Bernet, P. Burkhardt-Holm, H. Schmidt-Posthaus, P. Vonlanthen, T. Wahli and H. Segner,2007691125