Erythropenia in Piscine Trypanosomiasis
نویسنده
چکیده
Fish species may act as suitable hosts for trypanosomes. Clarias batrachus, Channa punctatus and Wallago attu were found infected with Trpanosoma batrachi , T. aligaricus, and T. attii, The vulnerable fishes were divided into six groups: Group I Clarias batrachus (IA control, IB infected), Group II Channa punctatus (IIA control, IIB infected) and Group III Wallago attu (IIIA control, IIIB infected). Studies conducted on the total erythrocyte counts (TEC) indicate a decline in this hematological parameter in all B Group fishes, maximum fall (33.19%) being recorded in C. punctatus infected with T. aligaricus. Abnormal erythrocyte cells (vacuolated and punctuated erythrocytes, macrocytes and enucleated erythrocytes showing karyorrhexis) were also encountered in infected blood. The parasites reside in the host blood and depend upon their hosts for their metabolic activities. The parasites may produce haemolytic factors and decrease the oxygen carrying capacity of the blood causing erythropenia.
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