Xiang Xian-Ling, Chen Ying-Ying, Xu Qiu-Lei, Zhu Ling-Yun, Wen Xin-Li, Xi Yi-Long
College of Life Sciences, Anhui Normal University, Wuhu, 241000, Anhui, People's Republic of China.
Key Laboratory of Biotic Environment and Ecological Safety in Anhui Province, Wuhu, 241000, Anhui, People's Republic of China.
Bull Environ Contam Toxicol. 2017 Oct;99(4):493-499. doi: 10.1007/s00128-017-2172-9. Epub 2017 Sep 5.
The aim of this study was to investigate the responses in filtration and grazing rates of five rotifer strains of the species Brachionus calyciflorus under different temperatures and MC-LR concentrations. The results showed that strain identity, MC-LR concentration, temperature, and the interactions of these factors significantly affected both response variables, with the exception of the interaction of strain and MC-LR on the grazing rates. At low MC-LR concentrations and for the control group, the filtration and grazing rates increased with increasing temperature. The filtering and grazing rates of B. calyciflorus exposed to higher MC-LR concentrations, however, showed no evident enhancement with increasing of temperature. At high temperatures, the filtration and grazing rates of all rotifer strains decreased significantly with increasing concentration of MC-LR, however B. calyciflorus exhibited a refractory stability in the presence of increased MC-LR levels at lower temperatures.
本研究的目的是调查五种萼花臂尾轮虫品系在不同温度和微囊藻毒素-LR（MC-LR）浓度下的滤食率和摄食率反应。结果表明，品系特性、MC-LR浓度、温度以及这些因素之间的相互作用均对两个反应变量有显著影响，但品系与MC-LR对摄食率的相互作用除外。在低MC-LR浓度下以及对照组中，滤食率和摄食率随温度升高而增加。然而，暴露于较高MC-LR浓度下的萼花臂尾轮虫的滤食率和摄食率并未随温度升高而显著提高。在高温下，所有轮虫品系的滤食率和摄食率均随MC-LR浓度升高而显著降低，不过在较低温度下，随着MC-LR水平升高，萼花臂尾轮虫表现出一定的耐受性稳定性。
