Abstract

The purpose of this study was to determine the effect of hyperthermia on the immune response of shrimp infected by IMNV. Vannamei shrimp were challenged with IMNV and reared at temperatures 30ºC (Sk30), 31ºC (S31), 32ºC (S32) and 33ºC (S33) repectively. The temperature of shrimp without IMNV infection was 300C as control. During the study, shrimp immune response measurements were Total Hemocyte Count (THC), Differential Hemocyte Count (DHC), Respiratory Burst (RB) activity and Phenoloksidase (PO) activity. Generally, the results showed that the response of shrimp decreased along with hyperthermic condition. Shrimp infected with IMNV, decreased immune response especially at temperatures of 32ºC and 33ºC.

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