title: Accumulation of cadmium and copper by the terrestrial snail Arianta arbustorum L.: kinetics and budgets.
abstract: Specimens of the terrestrial gastropod Arianta arbustorum were fed on cadmium- or copper-enriched agar plates with the aim of performing an input/output analysis and of studying the distribution of these metals in several organs of the snails. After a feeding period of 20 days about 45% of cadmium were lost. 36% accumulated in the hepatopancreas, where a cadmium concentration of more than 500 μg/g was measured. The efficiency of cadmium assimilation decreased from about 90% at the beginning to about 55% after 20 days. Copper was distributed more evenly than cadmium, but the main site of copper storage seemed to be the foot/mantle tissues, where 49% of the ingested copper were found. The efficiency of copper assimilation always exceeded 95%. The patterns of distribution and assimilation of copper and cadmium are discussed in relation to differences in the cytological and biochemical detoxification mechanisms which exist for these metals in molluscs.
authors.affiliation: Institut für Zoologie, Abteilung Zoophysiologie der Universität Innsbruck, Technikerstrasse 25, A-6020, Innsbruck, Austria.
authors.forename: Burkhard
authors.initials: B
authors.lastname: Berger
authors.affiliation: Institut für Zoologie, Abteilung Zoophysiologie der Universität Innsbruck, Technikerstrasse 25, A-6020, Innsbruck, Austria.
authors.forename: Reinhard
authors.initials: R
authors.lastname: Dallinger
keywords: Arianta arbustorum; Budget; Cadmium; Copper; Tissue distribution