Abstract:
The sensitivity of fish viz. Catla catla, Labeo rohita and Cirrhina mrigala of three age groups towards toxicity of water-borne and dietary cadmium (Cd) and cobalt (Co) were investigated. All the three fish species showed significantly variable responses towards water-borne and dietary concentrations of both Cd and Co. Among the three age groups, 60 day fish showed significantly more sensitivity towards metallic ion toxicity than the other two age groups i.e., 90 and 120 day. The mean sensitivity of three fish species, as their 96 h LC50 and lethal concentrations followed the order: Co > Cd. However, dietary metals were significantly less toxic than that of water-borne. The ability of three fish species to tolerate dietary metals fluctuated significantly. C. catla showed significantly higher sensitivity towards dietary Cd than that of Co. C. catla were significantly more sensitive to both water-borne and dietary metals, followed by that of C. mrigala and L. rohita with statistically significant differences.
Page(s):
276-280
DOI:
DOI not available
Published:
Journal: International Journal of Agriculture and Biology, Volume: 14, Issue: 2, Year: 2012