Haematological anomalies in a fresh water teleost, Colisa fasciatus, on acute exposure to cobalt.
Colisa fasciatus, a fresh water teleost, when exposed for 90 hrs to a sublethal concentration of 195 p.p.m. (0.87 of the 96 hrs LC50 value) cobalt elicited leucopenia due to reduction in the number of circulating small lymphocytes. The treatment also caused decline in blood clotting time with a concomitant increase in the abundance of circulating thrombocytes. No differences in total erythrocyte count, haematocrit, erythrocyte sedimentation rate, and haemoglobin values were found between the control and treated fish. The hepatosomatic index of fish increased significantly after exposure to cobalt. Results are discussed in terms of fish's reaction to acute stress.
D000208:Acute Disease; D000818:Animals; D001772:Blood Cell Count; D001777:Blood Coagulation / Q000187:drug effects; D003035:Cobalt / Q000506:poisoning*; D005260:Female; D005399:Fishes / Q000097:blood*; D007970:Leukopenia / Q000139:chemically induced*
D003035:Cobalt