Articles scientifiques
Shigeki Muramoto (1981)
Vertebral column damage and decrease of calcium concentration in fish exposed experimentally to cadmium
Environmental Pollution Series A, Ecological and Biological, 24(2):125–133.
The variations of the Ca, P, Mg and Cd concentrations in the bodies of deformed and normal fish exposed for long periods to water containing low chemical concentrations of Cd were determined. The vertebrae of the fish were then examined by X-ray photography and the mechanism of the development of malformation caused by the loss of Ca from the bones was studied. Deformed fish appeared on the 47th, 85th and 73rd days after Cd exposure in water containing 0·01, 0·05 and 0·1 ppm of Cd, respectively. Due to exposure to the Cd-containing water, the Cd content of the fish increased, whereas the Ca and P contents in the vertebrae tended to decrease. Cavitation of the bone metabolism and contracted adhesion of articulations and strain at the costal apices due to pressure were observed. The percentage of ash weight/dry weight in the bones was also reduced in the deformed fish.
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