Accumulation of Copper in Different Tissues and Changes in Oxygen Consumption Rate in Indian Flying Barb , Esomus Danricus ( Hamilton-Buchanan ) Exposed to Sub-Lethal Concentrations of Copper

Abstract

In the present work, the accumulation pattern of sub-lethal doses (0.005, 0.0025 and 0.001 µgl-1) of copper (Cu) in different tissues of Indian flying barb, Esomus danricus and its influence on the rate of oxygen consumption of this fish at the end of 28 days of exposure were studied. It was found that the pattern of accumulation changed with concentration. Cu concentration increased in all the tissues except bone and brain and the rate of uptake of Cu increased with time in the gill, liver and flesh but remained same in kidney. Treatment of 0.005 and 0.0025 µgl-1 of Cu produced significant decline in the rates of oxygen consumption of the fish at all exposure duration, while treatment of 0.001 µgl-1 produced similar decline only after 14 days of exposure when compared to control. Higher doses of exposure had more severe effects.

Dietary copper requirement of fingerlingHeteropneustes fossilisfor formulating copper‐balanced commercial feeds

“…Only bioavailable forms of copper are considered to be toxic to exposed organisms. Toxic effects and reduced weight were recorded in H. fossilis that were fed diets containing higher than optimum levels of copper which are in accordance with other studies on olive flounder (Kim, Jang, Lee, & Kim, ); Indian flying barb (Das & Gupta, ); beluga (Mohseni et al, ); common carp (Luszczek‐Trojnar, Sionkowski, Drazg‐Kozak, & Popek, ); and spotted snakehead (Hameid et al, ). Recent studies indicate that the Cu uptake efficiency is similar for diet and water (Clearwater et al, ).…”

“…Lower values of Hct, Hb and RBC counts have been acknowledged as the indications of anaemia in fish (Lin, Lin, & Shiau, 2012;Zehra & Khan, 2018). Decreased immunity, negative effect on the heartbeat, disturbance of respiratory system and other behavioural changes develop as a result of excess dietary copper (Ajani & Akpoilih, 2010;Das & Gupta, 2013).…”

Copper and lead accumulation in common carp females during long-term dietary exposure to these metals in pond conditions

“…The results obtained confirm the observations of other authors, who also noted the multiplication of Cu concentrations in the liver of fish chronically exposed to this metal (Clearwater, Baskin, Wood & McDonald ; Kraemer, Campbell & Hare ; Kim et al . ; Das & Gupta ) or as the effect of short‐time exposure (Karayakal et al . ).…”

“…Studies carried out with various fish species showed that excess copper causes structural deformations in gill tissue, changes in biochemical and haematological parameters (Ciftci, Cicik, Erdem & Ay ), coordination disturbances in swimming activities or rejection of food uptake (Karayakal, Cicik, Ciftci, Karaytug, Erdem & Ozcan ). An excess of copper levels in the body may lead to anaemia, disturbances in the liver or the respiratory system, behavioural changes, decreased immunity and a negative effect on the heartbeat (Ajani & Akpoilih ; Ezeonyejiaku, Obiakor & Ezenwelu ; Das & Gupta ).…”

Relationship of Biometric Size - Weight , Nutritive Value and Metal Concentrations in Clarias Lazera ( Cuvier and Valenciennes ) Reared in Treated Wastewater

“…Furthermore, Benamar and Zitouni (2013) reported that accumulation of Cu is higher than Cr in liver tissue compared with the muscle tissue of Sardinella aurita collected from Oran Coastline in Algeria. Das and Gupta (2013) concluded that Cu accumulation pattern in the Indian flying barb Esomus danricus was related to metal concentration and increased with exposure time. The findings of this study are also in agreement with Mason (1991) and Ebrahimi et al (2007) who reported that consumption of edible tissue of mullet which is subjected to heavy metals pollution is not harmful to humans and that the heavy metals accumulation in fish tissues is below the Egyptian standards.…”