Arakelova E S, Chebotareva M A, Zabelinskiĭ S A
Zh Obshch Biol. 2004 May-Jun;65(3):266-72.
An effect of environmental temperatures and invasion by helminthes larvae on fatty acids composition of digestive gland lipids of marine littoral gastropod Littorina saxatilis from White Sea and Barents Sea was investigated. We have compared gastropods from boreal and subarctic populations. It was found that gastropods from waters of lower temperature have increased omega3/omega6 fatty acids ratio. However, saturation index of individual membrane phospholipids was not affected. Also, content of eicosenoic acid (20:1) in individual phospholipids was not affected by temperature. Invasion increases the omega3/omega6 ratio of common lipids but not the omega3/omega6 ratio of common and individual phospholipids with the exception of phosphatidilcholine of cold water mollusks from Barents Sea that had this ratio doubled. In contrast to temperature, invasion affects the content of eicosenoic acid that was increased in the investigated organs. Adaptability of these effects is discussed regarding parasite-host system.
研究了环境温度和蠕虫幼虫入侵对来自白海和巴伦支海的海洋沿岸腹足纲动物岩滨螺消化腺脂质脂肪酸组成的影响。我们比较了来自北方和亚北极种群的腹足纲动物。结果发现，来自水温较低水域的腹足纲动物ω3/ω6脂肪酸比值增加。然而，单个膜磷脂的饱和指数不受影响。此外，单个磷脂中二十碳烯酸（20:1）的含量不受温度影响。入侵会增加普通脂质的ω3/ω6比值，但不会增加普通和单个磷脂的ω3/ω6比值，巴伦支海冷水软体动物的磷脂酰胆碱除外，其该比值翻倍。与温度不同，入侵会影响二十碳烯酸的含量，在所研究的器官中其含量增加。关于寄生虫 - 宿主系统，讨论了这些影响的适应性。
