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.
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    Physiological Responses of the Heterobranchus Bidorsalis (Male) X Clarias Gariepinus (Female) Hybrid (Heteroclarias) Fingerlings to Different Temperature Levels under Laboratory Conditions
    (World Academy of Science, Engineering and Technology, 2015) Kolo Reuben Jiya; Ayanwale Adesola Victoria; Iliya Auta Yohanna; Mohammed A. Z.; Lamai S. L.; Tsadu S. M.
    A twelve weeks experiment was carried out on Heteroclarias freshwater hybrid fish fingerlings under laboratory conditions to study the effects of different temperature levels, 26.91 (control), 28.00, 30.00, 32.00°C respectively and their physiological responses to oxygen consumption, ammonia excretion and opercular respiratory beats were evaluated. The oxygen consumption, ammonia excretion and opercular respiratory beats were determined weekly based on standard procedures. The findings revealed that the oxygen consumption of Heteroclarias hybrid fingerlings significantly (p<0.05) increased with increase in temperature. The ammonia excretion were not significantly different (p>0.05) in all the temperature levels. The opercular respiratory beats per minutes showed similar trend in weeks 1,2,4 and 8 but indicated significantly higher (p<0.05) opercular respiratory beats (range= 117.10±2.26 at 30oC to 142.75±3.04 opercular beat at 32oC in week 8) at highest tested temperature levels. However, there was a decreasing trend in the opercular respiratory beats per minute of the controlled fingerlings. Generally, the opercular respiratory beats per minute decreased with increase in fish size. The findings of this study confirmed that increase in water temperature affects the physiology of Heteroclarias hybrid and hence for effective rearing and for profit making, it is essential for the hybrid to be cultured in the temperature range between 26.91°C (control) to 28.00°C
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    Relationship between fish species abundance and physico-chemical parameters of Tagwai Lake, Minna, Nigeria.
    (Fisheries Society of Nigeria, 2020) Kolo Reuben Jiya; Ojutiku R. O.; Tsadu S. M.; Chukwuemeka V. I
    The study was carried out to investigate the temporal variations, in terms of physico-chemical parameters as well as the fish species abundance in Tagwai Lake, Minna, Nigeria and establish a relationship between both parameters using Canonical correspondence analysis ,from January 2013 to December, 2014. The results of the physico-chemical parameters investigated revealed that the Dissolved Oxygen (DO) ranged from 6.60±0.75 (mg/l) to 12.7±0.66 (mg/l), in 2013 and 6.00±0.31 (mg/l) to 11.20±1.35 (mg/l) in 2014. The BOD ranged from 2.40±0.24 (mg/l) to 7.00±1.52 (mg/l) in 2013; and from 3.28±0.41 (mg/l) to 5.60±1.02 (mg/l) in 2014. The DO values in the rainy season months were significantly different (p >0.05) from those of the dry season months. A total of ten (10) species of fishes belonging to seven families were identified namely, Clariidae (Clarias gariepinus), Claroteidae (Chrysicthys auratus), Bagridae (Auchenoglanis occidentalis), Characidae (Alestes dentex), Mormyridae (Mormyrus hasselquistii) and Cichlidae (Sarotherodon galiliaeus, Tilipia zillii and Tilapia aurea, Hemichromis fasciatus, and Clupeidae (Odaxothrissa mento). Correlation between fish species and physico-chemical parameters revealed strong correlation of Tilapia galileae and Mormyrus hasselquistii with phosphate. Hemichromis fasciatus correlated strongly with nitrate, BOD and DO. Auchenoglanis occidentalis and Clarias gariepinus weakly correlated with pH. This indicate the influence of physico-chemical parameter on the domestication and productivity of the lake