Lipid Metabolism of Caddisfly Larvae at Low pH |
| |
| Authors: | Regerand T I Nefedova Z A Toivonen L T Dubrovina L V Vuory K-M Markova L V Ruokolainen T R |
| |
| Institution: | (1) Karel Scientific Center of the Russian Academy of Sciences, Institute of Aquatic Problems of the North, pr. A. Nevskogo 20, Petrozavodsk, 185003, Russia;(2) Karel Scientific Center of the Russian Academy of Sciences, Institute of Biology, Pushkinskaya ul. 11, Petrozavodsk, 185610, Russia;(3) Center of the Environment of North Karelia, Joensuu, 80101 pFinland |
| |
| Abstract: | The influence of low pH (5.0 and 4.0) on lipid metabolism of caddisfly larvae Hydropsyche contubernalis L. (Trichoptera) was studied in 48 h toxicity experiments. The results were correlated with lipid composition of caddisfly larvae directly isolated from natural water. Phospholipids, cholesterol, mono-, di-, triacylglycerols, and fatty acids were detected by thin-layer and liquid chromatography. Minimal environmental changes were shown to initiate the biochemical adaptation mechanisms strengthening the cellular membranes through their condensation due to additional phospholipid and cholesterol synthesis. In the natural medium the adaptation processes are more active than in the artificial medium. More serious changes, such as pH decrease to 4.0, suppress the adaptation processes in the first medium and terminate them in the second one. |
| |
| Keywords: | early ontogenesis water invertebrates lipid metabolism lipids pH |
| 本文献已被 SpringerLink 等数据库收录！ |
|
