Is the cadmium uptake from soil important in bioaccumulation and toxic effects for snails?

被引：65

作者：

Coeurdassier, M ^{[1
]}

Gomot-de Vaufleury, A ^{[1
]}

Lovy, C ^{[1
]}

Badot, PM ^{[1
]}

机构：

[1] Univ Franche Comte, Inst Sci & Technol Environm, Lab Biol & Ecophysiol, MRT,INRA EA 3184, F-25030 Besancon, France

来源：

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY | 2002年 / 53卷 / 03期

关键词：

snail; cadmium; exposure routes; growth inhibition; bioaccumulation;

D O I：

10.1016/S0147-6513(02)00004-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To evaluate the contribution of digestive and epithelial transfer of Cd from soil to snail, Helix aspersa was exposed to an artificial substrate contaminated with 0, 100, 500, and 1000 mug Cd (.) g(-1) for 4 weeks under laboratory conditions. Two modes of exposure were used: (1) the snails were in direct contact with the substrate (DC) or (2) were separated from substrate with a perforated plate (no contact (NC)) which allowed ingestion of substrate but avoided epithelial contact. Cd concentrations in DC snails were twice as high as in NC snails. The bioaccumulation factors were 0.51 +/- 0.13 in DC snails and 0.26 +/- 0.04 in NC snails. Dose-dependent growth inhibition was noted in DC snails (500 < EC50 < 1000 mug (.) g(-1) and EC10 around 100 mug (.) g(-1)) while only slight effects were noted in NC snails. Internal Cd concentrations in DC and NC snails were linearly correlated with growth effect whatever the contamination route. (C) 2002 Elsevier Science (USA). All rights reserved.

引用

页码：425 / 431

页数：7

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