镉暴露对淡水浮游甲壳类动物摄食的影响。
Effects of cadmium exposure on feeding of freshwater planktonic crustaceans.
作者信息
Gulati R D, Bodar C W, Schuurmans A L, Faber J A, Zandee D I
机构信息
Limnological Institute, Vijverhof Laboratory, Nieuwersluis, The Netherlands.
出版信息
Comp Biochem Physiol C Comp Pharmacol Toxicol. 1988;90(2):335-40. doi: 10.1016/0742-8413(88)90007-2.
PMID:2902994
Abstract
- Effects of cadmium exposure (0.010-0.100 ppm) on food consumption and assimilation rates of crustacean zooplankton from 2 lakes were studied in laboratory using radioisotope (14C) technique. 2. The inhibiting effects were significant 48 hr after Cd-exposure, but not after 20 hr exposure. 3. Daphnia spp. were the most affected cladocerans; copepods, especially the cyclopoids, appeared less sensitive. 4. The decrease in assimilation rates was much more marked than in the consumption rates. 5. The 14C-technique offers quick and sensitive means of studying the effects of heavy metal toxicity.
摘要
- 在实验室中，使用放射性同位素（14C）技术研究了镉暴露（0.010 - 0.100 ppm）对来自两个湖泊的甲壳类浮游动物食物消耗和同化率的影响。2. 镉暴露48小时后抑制作用显著，但暴露20小时后不显著。3. 水蚤属是受影响最严重的枝角类动物；桡足类，尤其是剑水蚤类，似乎不太敏感。4. 同化率的下降比消耗率的下降更为明显。5. 14C技术为研究重金属毒性的影响提供了快速且灵敏的方法。
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