Schill Ralph O, Köhler Heinz-R
Cell Biology, Zoological Institute, University of Tübingen, Auf der Morgenstelle 28, D-72076 Tübingen, Germany.
Ecotoxicology. 2004 Nov;13(8):787-96. doi: 10.1007/s10646-003-4476-2.
Isopods taken from populations of Onsicus asellus and Porcellio scaber from long-term polluted sites in the vicinity of metal smelting works at Avonmouth, South West England, and from a control site near Tübingen, South Germany, were examined for the frequency and size of metal-containing granules (spherites), lipid droplets and glycogen in their hepatopancreas. The number and size of spherites in the hepatopancreas of O. asellus increased with decreasing distance to the smelter, but such a trend was not found in P. scaber. A trend towards massive reduction in hepatopancreatic energy reserves (lipid, glycogen) with increasing soil metal pollution was observed for O. asellus while, in contrast, the lipid and glycogen content of P. scaber midgut gland cells was independent of the distance to the smelter. In view of previous reports on metal accumulation and biochemical responses to metal pollution, we propose that the two investigated isopod species, which form stable populations in the Avonmouth metal gradient, use different strategies to survive.
对采自英格兰西南部埃文茅斯金属冶炼厂附近长期受污染地点的奥氏潮虫（Onsicus asellus）和普通卷甲虫（Porcellio scaber）种群，以及德国南部图宾根附近一个对照地点的等足目动物，检测了其肝胰腺中含金属颗粒（球粒体）、脂滴和糖原的频率及大小。奥氏潮虫肝胰腺中球粒体的数量和大小随着与冶炼厂距离的缩短而增加，但普通卷甲虫未发现这种趋势。观察到奥氏潮虫肝胰腺能量储备（脂质、糖原）随着土壤金属污染加剧有大幅减少的趋势，而相比之下，普通卷甲虫中肠腺细胞的脂质和糖原含量与到冶炼厂的距离无关。鉴于之前有关金属积累及对金属污染生化反应的报道，我们认为，在埃文茅斯金属梯度中形成稳定种群的这两种被研究等足目动物采用了不同的生存策略。
