Evaluation of trace metal (Hg, B, Co, and Al) levels in tissues of skipjack tuna, Katsuwonus pelamis (Linnaeus, 1758) fish from Karachi Fish Harbour, Karachi, Pakistan
The level of four heavy metals Mercury (Hg), Boron (B), Cobalt (Co),Aluminum(Al) in muscle and liver of Katsuwonus pelamis fish. Fish sample ofKatsuwonus pelamis were collected from fish harbour of Karachi during January 2007and December 2007 for metal analysis. Samples were analyzed by AAS-700. The highestlength (63cm) and weight (2700g) were recorded in this studied. The meanconcentrations of Hg, B, Co and Al in muscle were recorded as 0.041, 0.069, 0.041and0.030μg/g, respectively. However, the mean concentrations of Hg, B, Co and Al in livertissues were found as 0.673, 0.725, 0.725 and 0.498μg/g, respectively.The highestconcentration of B was found in both liver and muscle tissues in pre-monsoon andmonsoon, and the lowest concentration of Al was found in liver tissues at pre-monsoon,monsoon and post-monsoon seasons. The results of this study show that Hg, Co and Alaccumulations of K. pelamis caught from Karachi coast were generally below theinternational permissible levels. Therefore, metal accumulations in K. pelamis and allother fishes have to be monitored continuously in this region for human healthy. ANOVAanalysis clearly revealed that there was a significant p≤0.05 in organ of fishes.Statistically significant differences were observed in the mean metal values fromdifferent seasons and tissues (p<0.05).
| Main Authors: | , , , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2011
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| Subjects: | Biology, Fisheries, Heavy metals, Katsuwonus pelamis fish, fish harbour, Karachi, Pakistan., |
| Online Access: | http://hdl.handle.net/1834/40762 |
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