Title
Trace metal transfer in a soil-plant-snail microcosm field experiment and biomarker responses in snails Trace metal transfer in a soil-plant-snail microcosm field experiment and biomarker responses in snails
Author
Faculty/Department
Faculty of Sciences. Biology
Publication type
article
Publication
Amsterdam ,
Subject
Chemistry
Biology
Source (journal)
Ecological indicators. - Amsterdam
Volume/pages
48(2015) , p. 636-648
ISSN
1470-160X
ISI
000347495100068
Carrier
E
Target language
Dutch (dut)
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A microcosm experiment was performed to investigate temporal (up to 16 weeks) and spatial variation in metal transfer in a soilfood (nettle)snail (Cepaea nemoralis) food chain and biomarker responses in the digestive gland of the same snails. Adult snails were sampled from an uncontaminated site and transferred to five sites located 0.5, 2.5, 3, 5, and 10 km from a historically polluted point source. All sites were park areas where grasslands interfered with patches of deciduous forest. Soil physicochemical properties (pH, clay%, OC%) significantly explained the uptake of metals by nettle. Concentrations of metals in the digestive gland (DG) of snails were significantly related to those in nettle, but rarely to soil physicochemical properties. In general metal concentrations in the DG fluctuated while As, Ni, Pb and Zn showed a site dependent increase with time. Despite the long term exposure, biomarker concentrations (lipid, glycogen, proteins, glutathione-S-transferases), and shell morphology, were not related to DG metal concentrations. Our investigation emphasizes the need for controlled long-term studies on the transfer and effects of metals in food chains since short term studies might only show temporary physiological changes due to experimental acclimation.
E-info
https://repository.uantwerpen.be/docman/iruaauth/64014a/e159109071e.pdf
Full text (open access)
https://repository.uantwerpen.be/docman/irua/a9e92d/8706.pdf
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