Research Laboratory of Biodiversity, Management and Conservation of Biological Systems, Faculty of Science of Tunis, University of Tunis El Manar, 2092, Tunis, Tunisia.
Laboratoire Génie Civil et géo-Environnement (LGCgE), Yncréa Hauts-de-France, Institut Supérieur D'Agriculture (ISA), 48 Boulevard Vauban, 59046, Lille Cedex, France.
Bull Environ Contam Toxicol. 2019 Sep;103(3):416-420. doi: 10.1007/s00128-019-02684-0. Epub 2019 Jul 24.
This study aimed at determining the competition of cadmium (Cd), lead (Pb), zinc (Zn) and copper (Cu) on their assimilation, on the food consumption and the growth of terrestrial isopod Porcellio laevis. Individuals were exposed to artificially contaminated litter of Quercus for 4 weeks and were weekly weighed. At the end of the experiment, the concentration of Cd, Pb, Zn and Cu in individuals were measured by atomic absorption spectrometry. Biological parameters such as growth, and bioaccumulation factor (BAF) were calculated and results from the various treatments were compared. Depending on metals, weight loss or gain were recorded for isopods during the four weeks of exposure. A weight loss was measured on individuals exposed to Cd-contaminated litter whereas a weight gain was highlighted for those exposed to the Zn-contaminated litter. BAF values revealed that P. laevis was macroconcentrator of Zn and Cu and deconcentrator of Cd and Pb.
本研究旨在确定镉（Cd）、铅（Pb）、锌（Zn）和铜（Cu）在其吸收、食物消耗和陆生等足目动物 Porcellio laevis 生长方面的竞争。个体在人为污染的栎属凋落物中暴露 4 周，并每周称重。实验结束时，采用原子吸收光谱法测量个体中 Cd、Pb、Zn 和 Cu 的浓度。计算了生长和生物积累因子（BAF）等生物参数，并比较了各种处理的结果。根据金属的不同，在 4 周的暴露期间，等足目动物的体重出现了减轻或增加。在受 Cd 污染的凋落物中暴露的个体体重减轻，而在受 Zn 污染的凋落物中暴露的个体体重增加。BAF 值表明，P. laevis 是 Zn 和 Cu 的巨浓缩器，而 Cd 和 Pb 的去浓缩器。
