Effects of temperatures and heavy metals on adult oyster (Crassostrea commercialis)
1985
Somtawin Dechaprompun | Nittharatana Paphasavit | Padermsak Jarayapun (Chulalongkorn Univ., Bangkok (Thailand). Faculty of Science. Dept. of Marine Science)
Effects of temperatures and heavy metals, namely copper and cadmium on adult oyster (Crassostrea commercialis Iredale and Roughley) was investigated. The 96-h. LC50 of copper and cadmium for adult oyster at ambient temperature were reported 2.44 and 2.21 ppm. While the 96-h. LC50 values for copper at 23.5 and 32.5 were 10.64 and 1.45 ppm. respectively. For cadmium, the 96-h. LC50 values at the same temperatures were 8.62 and 1.32 ppm. Cadmium was more toxic to adult oysters than copper. The toxicity of these metals was higher at high temperature and lower at low temperature. Safety concentration of copper and cadmium for adult oysters were 0.1220 and 0.1105 ppm. respectively
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