Lipid content and fatty acid profile during lake whitefish embryonic development at different incubation temperatures.

作者: Casey A. Mueller , Liam Doyle , John Eme , Richard G. Manzon , Christopher M. Somers

DOI: 10.1016/J.CBPA.2016.09.018

关键词:

摘要: Abstract Lipids serve as energy sources, structural components, and signaling molecules during fish embryonic development, utilization of lipids may vary with temperature. Embryonic under different temperatures is an important area research in light the changing global climate. Therefore, we examined percent lipid content fatty acid profiles lake whitefish ( Coregonus clupeaformis ) throughout development at three incubation temperatures. We sampled fertilized eggs embryos gastrulation, eyed fin flutter stages following chronic 1.8, 4.9 8.0 °C. Hatchlings were also 3.3, Fertilized had initial high percentage dry mass composed (percent content; ~ 29%) consisting ~ 20% saturated acids (SFA), ~ 32% monounsaturated (MUFA), ~ 44% polyunsaturated (PUFA), 4% unidentified. The most abundant 16:0, 16:1, 18:1(n-9c), 20:4(n-6), 20:5(n-3) 22:6(n-3). This profile matches that other cold-water species. Percent increased suggesting protein or yolk components preferentially used for energy. Total MUFA decreased which indicated primary catabolized development. PUFA driven largely by increase Temperature did not influence any stage, inconsistent effects on SFA Thus, appear to be highly adapted low temperatures, do alter response temperature within their natural conditions.

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