Abstract
Fish, Notopterus notopterus, in four sizes (4.5 ± 1.0, 9.0 ± 1.0, 14.5 ± 1.2, and 22.6 ± 1.8 cm in length) were exposed to phenol (P), 2,4-dinitrophenol (DNP), and pentachlorophenol (PCP) separately, and also to their three combinations (PCP + DNP) P (highly antagonistic), (DNP + P) PCP (additive), and (P + DNP) PCP (highly synergistic) to evaluate the effect of fish size on the toxicity of these chemicals separately and in combination. The results reveal that with increased fish size (from 4.5 + 1.0 to 14.5 + 12 cm in length) toxicity of phenolic compounds decreased. On the contrary, the larger size fish (22.6 ± 1.8 cm in length) was comparatively more susceptible. This indicates that change in fish size does influence the toxicity of phenolic compounds.
Published Version
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