Browsing by Author "Tsadu S. M."

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    Feeding Habits and Food Preferences of Auchenoglanis Occidentalalis from Tagwai Lake, Minna, Nigeria
    (International Journal of Applied Biological Research, 2019) Kolo Reuben Jiya; Ojutiku R. O.; Tsadu S. M.; Chukwuemeka V. I.
    The temporal variation in the food, feeding habits and food preference of Auchenoglanis occidentalis from Tagwai Lake, Minna, Nigeria were investigated from January 2013 to December 2014 using the frequency of occurrence method. In 2013, seven different food items were found in the diet namely; insect parts, plant materials, parts fish parts, protozoans, phytoplankton, sand particles and crustaceans. The same trend was observed in 2014. Insect materials were fed upon the most irrespective of year and season of sampling. When a comparison was done for both years using a T-test, the result revealed that insect parts valued about 24.00±2.00 in 2013 which was the highest value recorded while parts of fish had the highest frequency of occurrence in 2014 (22.50±3.50). The frequency of occurrence of protozoan for 2013 was 8.00±2.00 while that of 2014 was 11.00±2.00. From both years it is seen that although Auchenoglanis occidentalis from Tagwai Lake Minna is an omnivore, which fed on both plant and animal materials, it had tendency to feed more on animal materials.
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    Influence of Temperature and Ph on Critical Water Quality Parameters of Laboratory-Reared Culture Media of the Economically Important Heteroclarias Fish Fingerlings
    (NSUK Journal of Science & Technology, 2016) Kolo Reuben Jiya; Ayanwale A. V.; Tsadu S. M.; Lamai S. L.; Patrick O. S.; Abdulhakeem A.
    The attainment of species-specific conducive water quality environment is crucial to optimum production of fishes in captivity. This need therefore, informed the study of relationships between temperature, pH, and physicochemical parameters of Heteroclarias fingerlings under laboratory conditions. The fingerlings were raised at water temperature regime (Ambient (26.91oC), 28.00, 30.00 and 32.00oC); and pH of 5.00, 7.00 (i.e. ambient), 9.00 and 11.00. The water quality parameters (Dissolved Oxygen (DO); Biochemical Oxygen Demand (BOD); Ammonia; and Conductivity), of fish culture media were monitored weekly for three months. The results indicated that water temperature had no significant (P>0.05) effect on Ammonia concentration (range = 0.15 – 0.17mg/l) and pH condition (range = 6.78 at 26.91oC, to 6.95 at 28.00oC) of the culture media. Water temperature significantly (P<0.05) reduced DO from 6.16±0.91mg/l at 26.91oC, to < 5.00mg/l at temperatures above 28.00oC; but no significant difference in BOD at all temperatures levels. Conductivity increased significantly with rising temperature above the ambient condition (range = 251.02±59.73μS/cm at 26.91oC to 352.89±79.09μS/cm at 28.00oC). pH had no significant effects on the parameters at pH conditions tested; temperature, DO, BOD, and Ammonia. With the exception of significant difference in conductivity (P<0.05) of rearing media of Heteroclarias (range = 304.42±47.20μS/cm at pH 7.00, to 380.94±38.40 μS/cm at pH 9.00). pH 11.00 could not support survival of the fingerlings. The findings of this study have provided useful information for effective water quality management in artificial culturing of the fish Heteroclarias.