Effect of temperature on contents of essential highly unsaturated fatty acids in freshwater zooplankton |
| |
| Authors: | Michail I Gladyshev Vitaliy P Semenchenko Olga P Dubovskaya Elena B Fefilova Olesia N Makhutova Zhanna F Buseva Nadezhda N Sushchik Vladimir I Razlutskij Ekaterina V Lepskaya Mariya A Baturina Galina S Kalachova Olga N Kononova |
| |
| Institution: | aInstitute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russia;bSiberian Federal University, Svobodny av. 79, Krasnoyarsk 660041, Russia;cScientific and Practical Center of the National Academy of Sciences of Belarus on Bioresources, 27 Akademicheskaya Str., 220072 Minsk, Belarus;dInstitute of Biology of Komi Scientific Center of Ural Division of Russian Academy of Sciences, 28 Kommunisticheskaya Str., Syktyvkar 167982, Russia;eKamchatka Research Institute of Fisheries and Oceanography, Naberezhnaya 18, Petropavlovsk-Kamchatskii 683602, Russia |
| |
| Abstract: | In 11 lakes from cold and warm regions we studied the content of highly unsaturated fatty acids (HUFA) in seston (<130 μm) and crustacean zooplankton using gas chromatography–mass spectrometry. An increase of temperature correlated with a decrease of HUFA content in zooplankton. A multivariate canonical correlation analyses revealed, that the decrease of HUFA content was related with a decrease of per cent of copepods in zooplankton communities, which are known to have higher HUFA levels in their biomass, than cladocerans. This means that temperature primarily affected the HUFA levels indirectly, via changing of taxonomic structure of zooplankton community, while the homeoviscous adaptation of zooplankton individuals had comparatively lower importance. As found, water temperature was better predictor of HUFA contents of zooplankton, than the fatty acid composition of seston. Thus, it can be predicted, that a probable climate warming will decrease the content of the essential HUFA in freshwater zooplankton with possible negative consequences for animals of higher trophic levels. |
| |
| Keywords: | Essential polyunsaturated fatty acids Freshwater zooplankton Copepods Cladocerans Water temperature |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
