Journal of Fisheries and Aquatic Science1816-49271996-0751Academic Journals Inc.10.3923/jfas.2011.571.577Schilbe mystus (Linne, 1758), from two Different Habitats: Asejire and Oyan Lakes Southwestern Nigeria]]>AyoadeA.A. 5201165The population variability of Schilbe mystus in Asejire and Oyan Lakes located in Osun and Ogun states respectively is studied for the first time and it would serve as a reference for future sustainable fisheries management in various environments. Specimens of African butter catfish Schilbe mystus were caught from Asejire and Oyan lakes and ten morphometric and six meristic features were investigated and used to evaluate the degree of variation among the populations. The morphological characters of fresh specimens of Schilbe mystus collected from Oyan and Asejire Lakes showed differences in the meristic and morphometric characteristics of the two populations but these were not statistically significant (p>0.05; t-test) except right gill raker count. The mean values for all body measurement ratio were higher for specimens from the Oyan Lake than Asejire Lake, except for pectoral fin length/standard length and anal fin length/standard length ratios, however, they were not significantly different (p<0.05). The two populations are not racially distinct due to close similarities between meristic and morphometric characters. Differences observed in the right gill raker counts may be attributed to environmentally induced changes rather than by genetic properties.]]>Ajado, E.O. and C.A. Edokpayi,2003Clarias gariepinus (Burchell, 1822) from River Niger and Badagry Lagoon, Southwest Nigeria.]]>14148Anyanwu, A.O. and O.A. Ugwumba,2002Pseudotolithus senegalensis (C and V 1933) stocks along the East, Central and West of the Niger Delta, Nigeria.]]>17885Ayoade, A.A., S.O. Fagade and A.A. Adebisi,2006510131021Barbour, K.M., J.S. Oguntoyinbo, J.O.C. Onyemelukwe and J.C. Nwator,1982Britto, M.R. and R.M.C. Castro,2002Corydoradine catfish (Siluriformes: Callichthyidae) from the upper Parana and Sao Francisco: The sister group of Brochis and most of Corydoras species.]]>410061015Buitrago-Suarez, U.A. and B.M. Burr,2007Pseudoplatysoma bleeker (Siluriformes: Pimelodidae) with recognition of eight species.]]>1512138Devaere, S., D. Adriaens and W. Verraes,200713799109Evans, B.S. and D.R. Jerry,2006Tridacna gigas (Family Tridacnidae), on the great barrier reef.]]>1235243Ezenwa, B.I.O.,1978Chrysichthys nigrodigitatus (L.).]]>1978Fischer, W., G. Bianchi and W.B. Scott,19981998Friedrich, H.,1972pp: 356pp: 356Gharibkhani, M., M. Pourkazemi, M. Soltani, S. Rezvani and L. Azizzadeh,2009Sander lucioperca Linnaeus, 1758) in the Southwest Caspian Sea using microsatellite markers.]]>4161168Holden, M. and W. Reed,1978Hubbs, C.L. and K.C. Lagler,1964pp: 213pp: 213Ikusemiju, K.,1975Chrysichthys nigrodigitatus from Lagos and Lekki Lagoons, Nigeria.]]>37887898Kavan, L.S. S.R. Gilkolaei, G. Vossoughi, S.M.R. Fatemi, R. Safari and S. Jamili,2009Rutilus frisii kutum (Kamansky 1901) from the Caspian Sea; Iran and Azerbaijan regions, using microsatellite markers.]]>4316322Khalili, K.J. and A.K. Amirkolaie,2010Cyprinus carpio L.) Morphological and electrophoretic characteristics in the Southern Coast of the Caspian Sea.]]>5200207Radcliffe, L.,19281698588Reed, W., J. Burchard, A.J. Hopson, J. Jennes and I. Yaro,19671967Suneetha Gunawickrama, K.B.,200736100107Wiecazek, B., S. Krzykawski, A. Antoszek, J. Kosik and P. Serwotka,20102010Wiecaszek, B. and S. Krzykawski,2010Clarias batrachus (L., 1758) (Actinopterygii: Clariidae) from the laboratory culture.]]>2010