Agrochemical induced microcytic anaemia in a fresh water air-breathing fish

Mohita Sardana^a*, Kumar Saurabh^b, Subhash Chandra^b & Mrigendra Narayan Singh^b
*^aDepartment of Zoology, Magadh Mahila College, Patna University, Patna-800 005
^bFish Research Laboratory, P. G. Deptt. Of Zoology, A. N. College, Patna, Bihar, India

Received 10th June., 2012; Revised:17th August., 2012

Abstract :Pesticides are toxic and their improper use can result in hazards of various kinds. In the envisaged work an attempt has been made to evaluate the impact of LC50 48-h concentration of Rogor intoxication on the fish, Clarias batrachus (L.). The result indicated that the pesticide caused “hypochromic micro-cytic anaemia” marked by significant decrease in the number of erythrocyte count (TEC), size and shape of erythrocytes, haemoglobin content (Hb), haematocrit value (PCV), absolute values (MCV, MCH & MCHC), total thrombocyte count (THC) and coagulation time (CT) of blood with significant increase in ESR values and prothrombin time (PT) of blood in both the sexes of the test fish. It is also apparent that apart from causing death directly, pesticide may cause severe damage to the life of the fishes as evident from haematological findings. Here, it is suggestive that necessary steps should be taken to prevent entry of pesticides indiscriminately into the fishery resources.
Key words: Clarias batrachus (L), Microcytic anaemica, Agrochemical.