title: Toxicokinetics of metals in the earthworm Lumbricus rubellus exposed to natural polluted soils--relevance of laboratory tests to the field situation.
abstract: The aim of this study was to estimate the bioavailability of essential (Zn, Cu) and non-essential metals (Cd, Pb) to the earthworm Lumbricus rubellus exposed to soils originating from a gradient of metal pollution in Southern Poland. Metal uptake and elimination kinetics were determined and related to soils properties. Experimental results were compared with tissue metal concentrations observed in earthworms from the studied transect. Cd and Pb were intensively accumulated by the earthworms, with very slow or no elimination. Their uptake rate constants, based on 0.01 M CaCl2-extractable concentrations in the soils, increased with soil pH. Internal concentrations of Cu and Zn were maintained by the earthworms at a stable level, suggesting efficient regulation of these metals by the animals. The estimated uptake and elimination kinetics parameters enabled fairly accurate prediction of metal concentrations reached within a life span of L. rubellus in nature.
authors.affiliation: Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland. Electronic address: iwona.giska@uj.edu.pl.
authors.forename: Iwona
authors.initials: I
authors.lastname: Giska
authors.affiliation: Department of Ecological Science, Faculty of Earth and Life Sciences, VU University, De Boelelaan 1085, 1081 HV Amsterdam, The Netherlands.
authors.forename: Cornelis A M
authors.initials: CA
authors.lastname: van Gestel
authors.affiliation: Institute of Biology, Chemistry and Bioresources, Yuriy Fedkovych Chernivtsi National University, Kotsubinsky Str. 2, Chernivtsi 58000, Ukraine.
authors.forename: Borys
authors.initials: B
authors.lastname: Skip
authors.affiliation: Institute of Environmental Sciences, Jagiellonian University, Gronostajowa 7, 30-387 Kraków, Poland.
authors.forename: Ryszard
authors.initials: R
authors.lastname: Laskowski
mesh_terms: D000818:Animals; D019216:Metals, Heavy / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity; D008956:Models, Chemical; D009835:Oligochaeta; D011044:Poland; D012987:Soil / Q000145:classification; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism* / Q000633:toxicity
chemical_list: D019216:Metals, Heavy; D012987:Soil; D012989:Soil Pollutants
keywords: Bioavailability; Kinetics; Lumbricus rubellus; Metals