Open AccessEffect of Copper (Heavy Metal) on Catla Fish
Author(s) -
Manju Bhargavi. A,
P Brindha.,
T Ilanchezhian.,
S Ayyappan.
Publication year - 2022
Publication title -
international journal of pharmaceutical sciences review and research
Language(s) - English
Resource type - Journals
ISSN - 0976-044X
DOI - 10.47583/ijpsrr.2022.v72i02.025
Subject(s) - catla , pollutant , copper , fish mortality , toxicology , bioassay , aquatic ecosystem , fish <actinopterygii> , environmental chemistry , heavy metals , aquatic animal , pollution , ecotoxicology , contamination , biology , chemistry , zoology , fishery , ecology , carp , organic chemistry
Heavy metal contamination has been reported in aquatic organisms. These pollutants build up in the food chain and are responsible for adverse effects and death in the aquatic organisms. Fish are relatively sensitive to changes in their surrounding environment including an increase in pollution. Fish health may thus reflect, and give a good indication of the health status of a specific aquatic ecosystem. For this present study Catla catla fish was used. The bioassay tests were conducted to find out the LC50 values for different durations of exposure (24, 48, 72 and 96 hours). We observed that the highest concentration at which 100 percent mortality was observed within 24 hours was considered as the lethal concentration (24 h LC100) and the lowest concentration at which 100 percent survival was observed by the end of 96 hours was considered as the sublethal concentration (96 h LC0). The mortality of fish decreased with decreasing concentration of heavy metals of copper. As soon as fishes were transferred from fresh water to lethal and sublethal concentrations of heavy metals of copper increased swimming activity was noted. At lethal concentration of heavy metals of copper the fishes showed erratic swimming activities and lost their balance. From these studies, it was evident that the rate of mortality increased with increasing concentration of heavy metals. Hundred percent mortality occurred at a concentration of 10-ppm copper.