Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30458
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Long-chain polyunsaturated fatty acid metabolism in carnivorous marine teleosts: insight into the profile of endogenous biosynthesis in golden pompano Trachinotus ovatus
Author(s): Wang, Shuqi
Wang, Meng
Zhanga, Hao
Yana, Xin
Guoa, Haoji
You, Cuihong
Tocher, Douglas R
Chen, Cuiying
Li, Yuanyou
Contact Email: d.r.tocher@stir.ac.uk
Keywords: Trachinotus ovatus
ratio of ALA/LA
growth performance
biosynthetic ability of LC-PUFA
Issue Date: Feb-2020
Citation: Wang S, Wang M, Zhanga H, Yana X, Guoa H, You C, Tocher DR, Chen C & Li Y (2020) Long-chain polyunsaturated fatty acid metabolism in carnivorous marine teleosts: insight into the profile of endogenous biosynthesis in golden pompano Trachinotus ovatus. Aquaculture Research, 51 (2), pp. 623-635. https://doi.org/10.1111/are.14410
Abstract: Golden pompano Trachinotus ovatus is an important farmed carnivorous marine teleost. Although some enzymes for long-chain polyunsaturated fatty acids (LC-PUFA) biosynthesis have been identified, the ability of T. ovatus for endogenous biosynthesis is unknown. Here, we evaluated in vivo LC-PUFA synthesis in a 56-day culture experiment using six diets (D1-D6) formulated with linseed and soybean oils to produce dietary linolenic/linoleic acid (ALA/LA) ratios ranging from 0.14 to 2.20. The control diet (D0) used fish oil as lipid source. The results showed that, compared with the corresponding indeces of fish fed D0, the weight gain rate and specific growth rate, as well as the contents of eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids in tissues (liver, muscle, brain and eye) of D1-D6 groups were significantly lower (P < 0.05). These data suggested that T. ovatus could not synthesize LC-PUFA from C18 PUFA or such ability was very low. However, tissue levels of 20:4n-3 in fish fed diets D1-D6 were higher than that of D0 fish (P < 0.05), and positively correlated with dietary ALA/LA ratio, while levels of EPA showed no difference among the D1-D6 groups. These results indicated that Δ5 desaturation, required for the conversion of 20:4n-3 to EPA, may be lacking or very low, suggesting incomplete LC-PUFA biosynthesis ability in T. ovatus.
DOI Link: 10.1111/are.14410
Rights: This item has been embargoed for a period. During the embargo 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. This is the peer reviewed version of the following article: Wang, S, Wang, M, Zhang, H, et al. Long‐chain polyunsaturated fatty acid metabolism in carnivorous marine teleosts: Insight into the profile of endogenous biosynthesis in golden pompano Trachinotus ovatus. Aquaculture Research 2020; 51: 623– 635, which has been published in final form at https://doi.org/10.1111/are.14410. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for self-archiving.
Licence URL(s): https://storre.stir.ac.uk/STORREEndUserLicence.pdf

Files in This Item:
File Description SizeFormat 
Manuscript ARE-OA-19-Jun-522-R1-FINAL.pdfFulltext - Accepted Version818.97 kBAdobe PDFUnder Embargo until 2020-12-17    Request a copy

Note: If any of the files in this item are currently embargoed, you can request a copy directly from the author by clicking the padlock icon above. However, this facility is dependent on the depositor still being contactable at their original email address.



This item is protected by original copyright



Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact library@stir.ac.uk providing details and we will remove the Work from public display in STORRE and investigate your claim.