Climate change and n-3 LC-PUFA availability. (April 2022)

• Record Type: Journal Article
• Authors: Tan, Karsoon; Zhang, Hongkuan; Zheng, Huaiping
• Is Part Of: Progress in lipid research. Volume 86(2022)
• Publication Date: 2022-04
• Subjects: N-3 LC-PUFA -- N-3:N-6 -- Phytoplankton -- Climate change -- Supply and demand -- Alternative; LC-PUFA Long-chain polyunsaturated fatty acids -- n-3 Omega-3 -- n-6 Omega-6 -- EPA eicosapentaenoic acid -- DHA docosahexaenoic -- SAFA Saturated fatty acids -- CO2 Carbon dioxide -- OA Ocean acidification -- CO3− Carbonate ion -- CIMP Coupled Model Intercomparison Project -- RCP Representative Concentration Pathway -- pCO2 Partial pressure of carbon dioxide -- TFA Total fatty acids -- LA Linoleic acid -- ALA α-linolenic acid -- FishMIP Fisheries and Marine Ecosystem Model Intercomparison Project -- TTE Trophic transfer efficiency -- BRT Biomass residence time -- C Carbon -- N Nitrogen -- P Phosphorus -- ppm Part per million -- Fads Fatty acyl desaturases -- Elvols Elongases.; Lipids -- Periodicals; Lipids -- Periodicals; Lipides -- Périodiques; Lipiden; 572.57
• DOI: 10.1016/j.plipres.2022.101161
• Languages: English
• ISSNs: 0163-7827

Abstract

Abstract: Omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) are essential fatty acids for the growth, development and survival of virtually all organisms. There is increasing evidence that anthropogenic climate change has a direct and indirect impact on the availability of natural n-3 LC-PUFA. However, this information is fragmented and not well organized. Therefore, this article reviewed published data from laboratory experiments, field experiments and model simulations to reveal the impact of climate change on the global supply of natural n-3 LC-PUFA and how this will limit the availability of n-3 LC-PUFA in the future food web. In general, climate change can significantly reduce the availability of natural n-3 LC-PUFA in grazing food webs in the following ways: 1) decrease the total biomass of phytoplankton and shift the plankton community structure to a smaller size, which also reduce the biomass of animals in higher trophics; 2) reduce the n-3 LC-PUFA content and/or quality (n-3: n-6 ratio) of all marine organisms; 3) reduce the transfer efficiency of n-3 LC-PUFA in grazing food web. In addition, as an anthropogenic climate adaptation measure, this review also proposed some alternative sources of n-3 LC-PUFA and determined the direction of future research. The information in this article is very useful for providing a critical analysis of the impact of climate change on the supply of natural n-3 LC-PUFA. Such information will aid to establish climate adaptation or management measures, and determine the direction of future research.