Fatty Acids as Trophic and Chemical Markers in Freshwater Ecosystems
Fatty Acids as Trophic and Chemical Markers in Freshwater Ecosystems
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DOI：
10.1007/978-1-4612-0547-0_3
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发表时间：
1999
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影响因子：
--
通讯作者：
G. Napolitano
中科院分区：
文献类型：
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作者：
G. Napolitano
阐明营养关系和确定有机物的源和汇是了解水生生态系统动态的重要步骤（Pimm等人，1991年）。水生生物之间的营养关系可以通过多种方式进行研究，从检查肠道内容物到使用生物化学、免疫学（Grisley和波义耳，1985年）和稳定同位素分析（Peterson和Fry，1987年）。一些脂质种类（脂肪酸、脂肪醇、碳氢化合物和甾醇）仅限于某些分类群，因此如果所讨论的脂质在代谢上稳定（或在食用后保留其基本结构），则可用于追踪食物链中的能量转移，从而帮助确定捕食者-猎物关系。
The elucidation of trophic relationships and the identification of sources and sinks of organic matter are important steps for understanding the dynamics of aquatic ecosystems (Pimm et al., 1991). The trophic relationships between aquatic organisms can be investigated in a number of ways, from the inspection of gut contents to the use of biochemical, immunological (Grisley and Boyle, 1985), and stable isotope analyses (Peterson and Fry, 1987). Some lipid species (fatty acids, fatty alcohols, hydrocarbons, and sterols) are limited to certain taxa, so if the lipid in question is metabolically stable (or retains its basic structure after consumption), it may be used to trace energy transfers through the food chain, thus helping to define predator—prey relationships.