Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/2318
Appears in Collections:Aquaculture Book Chapters and Sections
Title: Biosynthesis of polyunsaturated fatty acids in aquatic ecosystems: General pathways and new directions
Authors: Bell, Michael
Tocher, Douglas R
Contact Email: drt1@stir.ac.uk
Editors: Brett, M T
Kainz, M
Arts, M T
Citation: Bell M & Tocher DR (2009) Biosynthesis of polyunsaturated fatty acids in aquatic ecosystems: General pathways and new directions. In: Brett M T, Kainz M, Arts M T (ed.). Lipids in Aquatic Ecosystems. Biomedical and Life Sciences, Dordrecht, Heidelberg, London, New York: Springer, pp. 211-236.
Keywords: polyunsaturated fatty acids
synthesis
polyketide pathway
omega-3
primary production
microalagae
genes
dinoflagellates
Issue Date: 2009
Publisher: Springer
Series/Report no.: Biomedical and Life Sciences
Abstract: It is now well established that the long-chain, omega-3 (ω3 or n-3) polyunsaturated fatty acids (PUFA) are vitally important in human nutrition, reflecting their particular roles in critical physiological processes (see Chapter 14). In comparison to terrestrial ecosystems, marine or freshwater ecosystems are characterised by relatively high levels of long-chain n-3PUFA and, indeed, fish are the most important source of these vital nutrients in the human food basket. Virtually all PUFA originate from primary producers but can be modified as they pass up the food chain. This is generally termed trophic upgrading and various aspects of these phenomena have been described in Chapters 2, 6 and 7 (this volume). However, while qualitative aspects of essential fatty acid production and requirements in aquatic ecosystems are relatively well understood, in order to fully understand and model ecosystems, quantitative information is needed on synthesis and turnover rates of n-3PUFA at different trophic levels in the food web. The present chapter describes the biochemistry and molecular biology involved in the various pathways of PUFA biosynthesis and interconversions in aquatic ecosystems.
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author; you can only request a copy if you wish to use this work for your own research or private study.
Type: Part of book or chapter of book
URI: http://hdl.handle.net/1893/2318
Affiliation: Aquaculture
Aquaculture

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