Assessment of Trace Elements Concentration in Tissues of Tilapia Fish (Tilapia guineensis) from Badagry Creek, Nigeria
Journal Title: Journal of Applied Life Sciences International - Year 2017, Vol 10, Issue 2
Abstract
Aims: To determine trace element (Fe, Cu, Pb, Zn, Cr and Cd) concentrations in Tilapia guineensis tissues from Badagry creek, and to test hypotheses of (1) no significant difference in the element concentrations in muscle, liver, gill and kidney of Tilapia guineensis and (2) the observed concentrations in fish tissues do not exceed the limits in fish for human consumption. Study Design: Stratified random sampling. Place and Duration of Study: Designated fishermen landing points around Badagry creek, Nigeria. Quarterly between November, 2012 and September, 2013. Methodology: I randomly sampled Tilapia guineensis from the fishermen catches in the selected landing points of Badagry creek. In the laboratory, extraction and digestion of tissues (muscle, liver, gills and kidney) of specimen fishes were done using standard methods. The concentrations of Fe, Cu, Pb, Zn, Cr and Cd in the digested fish tissues specimens (filtrate) for each set of samples were measured using Atomic Absorption Spectrophotometer (Spectra AA-240, Agilent Technologies) with air-acetylene flame. Results: Mean concentrations in muscle, liver, gill and kidney respectively, expressed in mg/kg dry weight were 30.18, 122.29, 168.89 and 41.30 for Fe, 0.32, 5.27, 2.51 and 1.54 for Cu, 13.87, 15.10, 17.86 and 20.11 for Pb, 17.15, 15.32, 30.73 and 11.58 for Zn, 94.60, 98.93, 134.67 and 150.51 for Cr and Below Detection Limit (BDL), BDL, 0.06 and BDL for Cd. The concentration of iron in gills was significantly higher than liver, kidney and muscles (P =.02). Zinc concentration was also significantly higher in gills than in muscle, liver and kidney (P =.00). Average metal concentrations in muscle, liver, gill and kidney decrease in the following magnitude orders respectively: Cr>Fe>Zn>Pb>Cu>Cd; Fe>Cr>Zn>Pb>Cu>Cd; Fe>Cr>Zn>Pb>Cu>Cd; Cr>Fe>Pb>Zn>Cu>Cd. Element concentrations in fish edible tissues were below the FAO/WHO limits except for Pb and Cr. Conclusion: The concentrations of Pb and Cr in examined edible fish were posing a public health hazard and calls for continuous monitoring by relevant authorities/agencies.
Authors and Affiliations
Balogun Kayode James
Keywords
Related Articles
- EP ID EP318005
- DOI 10.9734/JALSI/2017/30771
- Views 113
- Downloads 0
Impact of Heavy Metals in Food Products from Crude Oil Polluted Area of Nigeria in Testicular Functions of Wistar Rats
Aims: The present study aim at investigating the effect of crude oil contaminated food products on the reproductive function of male rats. Study Design: Randomized controlled experiment. Place and Duration of Study: Mol...
Nutritional Evaluation of Marula (Sclerocarya birrea) Seed Cake as a Protein Supplement in Dairy Meal
Aims: To investigate the nutritional properties of Marula (Sclerocarya birrea) Seed Cake as a protein supplement in dairy cattle ration. Study Design: Experimental design used was a completely randomized design (CRD). Pl...
Nutritive Components in the Terminalia catappa L. (Combretaceae) Almonds Cultivated in Côte d'Ivoire
Aims: To determine the contents of the main nutrients in almonds derived from fruits of Terminalia catappa L. (Combretaceae) cultivated in Côte d'Ivoire. Study Design: The almonds of T. catappa were removed from the drie...
Nutritional Analysis of Octopus hubbsorum B (Cephalopoda: Octopodidae) from the Pacific Ocean, Acapulco, Guerrero, México
Aim: To establish the micro and macronutrient values of O. hubbsorum B and to evaluate its potential contribution to Mexican diet, since this organism is available all year in the Mexican Pacific Coast. Study Design: Tra...
Maximizing Maize (Zea mays L.) Crop Yield via Matching the Appropriate Genotype with the Optimum Plant Density
Aim: The objective of this investigation was to match the functions of optimum plant density to produce the highest possible grain yield per unit area with the greatest maize genotype efficiency. Study Design: A split pl...