Gladyshev M I, Sushchik N N, Glushchenko L A, Zadelenov V A, Rudchenko A E, Dgebuadze Y Y
Institute of Biophysics, Krasnoyarsk Research Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russia.
Siberian Federal University, Krasnoyarsk, 660041, Russia.
Dokl Biochem Biophys. 2017 May;474(1):220-223. doi: 10.1134/S1607672917030164. Epub 2017 Jul 20.
We compared the composition and content of fatty acids (FAs) in fish with different feeding habits (sardine (least) cisco Coregonus sardinella, goggle-eyed charr (pucheglazka) form of Salvelinus alpinus complex, humpback whitefish Coregonus pidschian, broad whitefish Coregonus nasus, boganid charr Salvelinus boganidae, and northern pike Esox lucius from an Arctic Lake. Feeding habits of the studied fish (planktivore, benthivore, or piscivore) significantly affected the composition of biomarker fatty acids and the ratio of stable isotopes of carbon and nitrogen in their biomass. The hypothesis on a higher content of eicosapentaenoic and docosahexaenoic acids in the fish of higher trophic level (piscivores) when compared within the same taxonomic group (order Salmoniformes) was confirmed.
我们比较了来自北极湖泊的具有不同摄食习性的鱼类（沙丁鱼（最少）、小鳍西鲱Coregonus sardinella、阿尔卑斯红点鲑复合体的凸眼红点鲑（pucheglazka）、驼背白鲑Coregonus pidschian、宽鼻白鲑Coregonus nasus、博加尼德红点鲑Salvelinus boganidae和白斑狗鱼Esox lucius）中脂肪酸（FAs）的组成和含量。所研究鱼类的摄食习性（浮游生物食性、底栖生物食性或肉食性）显著影响了生物标志物脂肪酸的组成及其生物量中碳和氮稳定同位素的比率。在同一分类群（鲑形目）内比较时，关于营养级较高的鱼类（肉食性鱼类）中二十碳五烯酸和二十二碳六烯酸含量更高的假设得到了证实。
