Witzel B
AG Bodenzoologie und Okologie, Institut für Biologie, Freie Universität Berlin, Grunewaldstrasse 34, Berlin, D-12165, Germany. gerhard=
Ecotoxicol Environ Saf. 2000 Sep;47(1):43-53. doi: 10.1006/eesa.2000.1940.
Uptake of cadmium, lead, and zinc was studied in juvenile Porcellio scaber in feeding experiments over 5 months. The metals were offered separately and in different combinations and concentrations in the food. The ability of P. scaber to eliminate the accumulated metals was studied subsequently for 3 months on uncontaminated food. Characteristic patterns of accumulation are described for the three metals. The combination of lead and zinc resulted in only minor differences in these patterns. On the other hand, the combination of zinc and cadmium at high concentrations completely changed the accumulation patterns for both metals. Not only cadmium but also zinc was excreted by P. scaber exclusively when the animals had been contaminated with both metals. In contrast both metals were stored permanently when offered separately. Possible reasons for the interactions of cadmium and zinc are discussed.
在为期5个月的喂食实验中，对幼年鼠妇摄取镉、铅和锌的情况进行了研究。这些金属分别以不同的组合和浓度添加到食物中。随后，在3个月的时间里，用未受污染的食物研究了鼠妇消除体内累积金属的能力。描述了这三种金属的特征性积累模式。铅和锌的组合在这些模式中仅产生了微小差异。另一方面，高浓度的锌和镉组合完全改变了两种金属的积累模式。当动物同时受到这两种金属污染时，鼠妇不仅会排出镉，还会排出锌。相比之下，当分别提供这两种金属时，它们都会被永久储存。文中讨论了镉和锌相互作用的可能原因。
