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- Title
Metal Bioaccumulation Patterns in Major Carps during Acute Toxicity Tests.
- Authors
ABDULLAH, SAJID; JAVED, MUHAMMAD; YAQUB, SAJID; AHMAD, NASIR
- Abstract
Laboratory tests were conducted on juvenile major carps viz. Catla catla, Labeo rohita and Cirrhina mrigala to determine zinc (Zn), lead (Pb), nickel (Ni) and manganese (Mn) bio-accumulation patterns during acute toxicity LC50 and lethal test at constant water temperature, pH and total hardness. Significant direct relationships were observed among metal LC50 and lethal concentrations that were responded in terms of metal accumulation in fish body. The present findings also demonstrated that the metal contents of fish body before exposure had a direct impact on 96h LC50 values of respective heavy metal and the susceptibility of fish. The differences among fish species for their ability to accumulate different metals in their bodies appeared to be species specific. Regarding overall ability of fish to concentrate metals in their bodies, C. mrigala exhibited the highest tendency, followed by that of L. rohita and C. catla. However, the difference between C. catla and L. rohita, to accumulate metals in their bodies during 96 h LC50 tests was statistically non-significant. The ability of all the three fish species to concentrate manganese in its body was significantly maximum followed by that of zinc, nickel and lead, respectively. Lead accumulation in fish body was significantly less than that of other metals during 96-h lethal toxicity tests. However, the ability of fish to accumulate manganese and zinc and lead and nickel showed statistically non-significant differences during 96-h LC50.
- Subjects
BIOACCUMULATION; CATLA catla; ROHU; TOXICITY testing; MORWONGS
- Publication
International Journal of Agriculture & Biology, 2011, Vol 13, Issue 5, p756
- ISSN
1560-8530
- Publication type
Article