Trace Metals Co-Toxicity in Hard Body Structures of Liza klunzingeri (Mugilidae: Perciformes) Mullet Fish

The possibility of inorganic pollutants causing stress to the marine ecosystem instigated us to conduct eco-toxicological tests on the predominant trace metals (Cu, Zn, Pb and V) in commercial important fish. Among the four metals, V had the lowest observed effect 1. Toxicity tests (96 h) using-conc...

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Bibliographic Details
Published in:American journal of environmental sciences 2008, Vol.4 (4), p.326-331
Main Authors: Bu-Olayan, A.H., Thomas, B.V., Al-Husaini, S.M.H.
Format: Article
Language:English
Subjects:
Liza klunzingeri
Mugilidae
Perciformes
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Summary:The possibility of inorganic pollutants causing stress to the marine ecosystem instigated us to conduct eco-toxicological tests on the predominant trace metals (Cu, Zn, Pb and V) in commercial important fish. Among the four metals, V had the lowest observed effect 1. Toxicity tests (96 h) using-concentration (LOEC: LC15) at 6.3 kg L 1) had the greatest-Multi factor Probit analysis revealed V (6.3 kg L effect at median lethal concentration (LC50) followed by Pb (6.7 kg 1) in Liza klunzingeri reared-1) and Zn (15.7 kg L-1), Cu (7.8 kg L-L in filtered seawater in the laboratory. Fish exposed to trace metals mixture (1:1 ratio) showed synergistic co-toxicity coefficient (CTC) factor among Cu, Pb and Zn and antagonistic CTC with V mixtures. There was significant trace metals bioaccumulation in fish body structures (otolith, dorsal fins and scales) exposed for 180 day toxicity tests at LOEC. These results suggest there is value in ecologists to characterize L. klunzingeri as a bio indicator to metal pollution and enumerate the co-toxicity of trace metals in the marine environment.
ISSN:1553-345X
DOI:10.3844/ajessp.2008.326.331