期刊
MARINE MICROPALEONTOLOGY
卷 138, 期 -, 页码 83-89出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.marmicro.2017.10.009
关键词
Protist; Pollution; Miliolid; Ultrastructure; Cytoplasm; Ammonia; Pseudotriloculina
类别
资金
- PRIN Ministero dell'Istruzione, dell'Universita e della Ricerca (MIUR) (protocollo RMTLYR)
- Polytechnic University of Marche
Heavy metals are known to cause deleterious effects on biota because of their toxicity, persistence and bioaccumulation. Here, we briefly document the ultrastructural changes observed in the miliolid foraminifer Pseudotriloculina rotunda (d'Orbigny in Schlumberger, 1893) and in the perforate calcareous species Ammonia parkinsoniana (d'Orbigny, 1839) induced by exposure to one of three heavy metals (zinc, lead, or mercury). The exposure of these two benthic foraminiferal species to the selected heavy metals appears to promote cytological alterations and organelle degeneration. These alterations include a thickening of the inner organic lining, an increase in number and size of lipid droplets, mitochondrial degeneration, and degradation vacuoles and residual body proliferation. Some of these alterations, including the thickening of the inner organic lining and the proliferation of lipids, might represent defense mechanisms against heavy metal-induced stress.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据