Efecto del triclorfon sobre los parámetros hematológicos de Oreochromis aureus Steindachner (tilapia)

The triclorphon is a organophosphorus pesticides whose use this allowed not, in spite of it is thoroughly it employee in the aquaculture for its effectiveness for the ectoparasites treatment. Very little information exists on the effect of this compound on the blood parameters of O. aureus. The concentration used was of 27,5 mg/L of Triclorphon. The samples were take of 6 fish at the 2, 6, 24 and 48 h of exhibition. The haematological variables evaluated were: Haemoglobin, Haematocrit, red blood cell count, Volume Corpuscular Mean, Haemoglobin Corpuscular Mean, and Concentration of Haemoglobin Corpuscular Mean. It was observed that triclorphon didn’t cause changes in the Hgb, Ht and RBCC neither in the corpuscular constants, although if significant difference was observed with regard to the control (p 0,05) starting from 24 h with increase of the neutrophile, eosinophils were present, decrease of the mature lymphocytes and decrease of the thrombocytes; as well as erythroblasts abundance and presence of triangular erythrocytes, amitosis.