Heavy metal levels in Thunnus albacares (Bonnaterre, 1788) from Karachi Fish Harbour, Pakistan
Fish Thunnus albacares were marketed by local fishermen during Febuaryto November 2011 from Karachi Fish Harbour. The fishes were collected seasonallyspring (February, March), summer (April, May), Monsoon (August), winter (November)for analysis of heavy metals. The highest mean of length (cm) 80.70+0.21 and weight (g)4587.50+83.45 was measured in winter season. The highest mean concentration of Fe46.93+13.54 μg/g dry wt. and Mn 5.40+3.06μg/g dry wt. was determined in summer andspring season. The lowest mean of Fe 20.861+ 5.095 μ/g and Mn 4.80+1.41 μg/g dry wt.was recorded in spring and summer seasons also. The maximum level of Zn 29.95+11.41μg/g dry wt., Cu 7.08+2.64 μg/g dry wt. and Pb 0.54+0.13 μg/g dry wt., was measured inwinter season. The lowest mean of Cd 0.15+0.11μg/g dry wt. was determined in springseason. The concentration of metals in fish muscles as follows: Fe>Zn>Cu>Mn>Pb>Cd.
| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2012
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| Subjects: | Biology, Fisheries, Heavy Metals, Thunnus albacares, Karachi Fish Harbour, Pakistan., |
| Online Access: | http://hdl.handle.net/1834/40769 |
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