FUW TRENDS IN SCIENCE & TECHNOLOGY JOURNAL
(A Peer Review Journal)
e–ISSN: 2408–5162; p–ISSN: 2048–5170
keywords: Cadmium, copper, gill, intestine, lead, liver, Parachanna obscura
The chronic accumulation profile of cadmium was determined by analyzing the tissues of Parachanna obscura exposed to cadmium and the interactive effects of copper and lead by exposing the same fish specimens to combined metals using mixtures of 0.2 mg/L cadmium with 0.2 mg/L copper and 0.2 mg/L cadmium with two different concentrations of 0.2 mg/L and 0.4 mg/L of lead. Following 40 days of exposure, the highest concentrations of cadmium consistently accumulated in the liver of the fish. The intestine and caudal muscle accumulated low levels of cadmium, while the gill accumulated the lowest levels of cadmium. Correlation between cadmium and copper concentrations indicates that cadmium accumulation was increased by co-exposure to copper. Lead however, impaired the uptake of cadmium. This study provides an insight to cellular accumulation of metals caused by single and combined dose of metal exposure, and hence can serve as a useful tool in identifying prior exposure to metals.
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