Changes in the hematological characteristics of Oreochromis niloticus exposed to sublethal levels of cadmium

Lopez, N.C. . Inst. of Biology

Changes in the hematological characteristics of Oreochromis niloticus exposed to sublethal levels of cadmium

1995

Lopez, N.C. (Philippines Univ. Diliman, Diliman, Quezon City (Philippines). Inst. of Biology)

The 96 h LC50 of cadmium chloride to young Oreochromis niloticus (TL=60-115 mm, 4.0-17.7 g) was 53 ppm (approximately 29 mg Cd/L). The toxicity of cadmium chloride to O. niloticus was affected by the concentration of the metal and pH. Acute exposure of fish to 37 mg/L and 26.5 mg/L cadmium chloride at pH 7.1 to 7.8 and 5.0 to 5.8 induced changes in RBC count, Ht and Hb concentration, and leucocyte count. Leucopenia, and a tendency toward neutrophilia were observed in tested fish

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