The lipid and fatty acid content of benthopelagic scavenging amphipods Ommatogammarus flavus and O. albinus from different depths of Lake Baikal were studied. These amphipods, known to move across a wide range of depths in Lake Baikal, had a relatively high level of total lipids (up to 46% dry weight) in comparison to other aquatic amphipods. This high level of total lipids resulted from a high concentration of storage lipids (triacylglycerols). The monounsaturated 18:1(n-9) acid in combination with 16:1(n-7), and 18:1(n-7) fatty acids were dominant in the amphipods, reflecting their deep-dwelling scavenging mode of life. Local groups of amphipods were distinguished along a Lake Baikal depth gradient based on the primarily diet-associated differences in fatty acid composition.

研究了贝加尔湖不同深度的底栖上肢清除两栖动物Ommatogammarus flavus和O. albinus的脂质和脂肪酸含量。与其他水生两栖类动物相比，这些两栖类动物已知在贝加尔湖的很深的深度范围内移动，其总脂质水平相对较高（干重高达46％）。高水平的总脂质是由高浓度的储存脂质（三酰基甘油）引起的。单不饱和的18：1（n-9）酸与16：1（n-7）和18：1（n-7）脂肪酸结合在两栖动物中占主导地位，反映了它们对深层生活的清除方式。基于主要与饮食相关的脂肪酸组成差异，沿贝加尔湖深度梯度区分了两栖类动物的本地群。