Impact of soil cadmium on land snails: a two-stage exposure approach under semi-field conditions using bioaccumulative and conchological end-points of exposure

PloS One
Dragos V NicaIosif I Gergen

Abstract

Land snails are highly tolerant to cadmium exposure and are able to accumulate soil cadmium independently of food ingestion. However, little information exists on the kinetics of cadmium retention in terrestrial gastropods exposed to an increase in the soil cadmium content, over time. There is also little knowledge about how exposure to cadmium-polluted soils influences shell growth and architecture. In this context, we examined cadmium accumulation in the hepatopancreas and shell of juvenile Cantareus aspersus exposed to elevating high levels of cadmium in soil. Also, the toxicity of cadmium to snails was assessed using a range of conchological endpoints, including shell height, width, volume, allometry and integrity. Test snails, aged three months, were reared under semi-field conditions, fed an uncontaminated diet and exposed first, for a period of 30 days, to a series of soil cadmium concentrations, and then, for a second period of 30 days, to soils with higher cadmium content. Cadmium showed a dose-dependent accumulation in both the hepatopancreas and shell. The kinetics of cadmium retention in the hepatopancreas of snails previously exposed to cadmium-spiked soils was significantly influenced by a new exposure event. The ...Continue Reading

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Citations

Nov 12, 2015·Environmental Science and Pollution Research International·Benjamin PaugetAnnette de Vaufleury
May 13, 2017·Environmental Science and Pollution Research International·Dragos NicaReinhard Stöger
Apr 19, 2020·Environmental Science and Pollution Research International·Louiza DouaferNoureddine Soltani
Jan 6, 2021·Environmental Science and Pollution Research International·Maxime LouzonAnnette de Vaufleury

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BETA
environmental stress

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