カドミウム経口投与の魚に対する影響-3-マダイとコイの比較

概要

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Porgy Pagrus major of 73±7g were fed for 113 days on feed containing Cd of 0, 37.5, 150, or 375ppm in the dry weight. Neither a decrease of the calcium contents of the serum and the vertebrae nor scoliosis, all of which were noticed in carp fed on feed containing Cd>140ppm for 30days, was observed in the porgy. The total amount of Cd administered per 100g of fish through the feeding period was 42.4mg for porgy fed on 375ppm Cd-feed, and 3.8-5.6mg for carp fed on 140ppm Cd-feed. The Cd contents of the hepatopancreas and the kidney were 146ppm and 164ppm in the porgy, and 14ppm and 52ppm in the carp. The fact that the porgy, a marine teleost, did not suffer from low calcium and vertebral abnormalities, even when they were administered 7-11 times as much Cd as the carp, is considered to be attributable, partly at least, to calcium derived from the environmental medium.
日本水産學會の論文