Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/30977
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Using fatty acid markers to distinguish between effects of salmon (Salmo salar) and halibut (Hippoglossus hippoglossus) farming on mackerel (Scomber scombrus) and whiting (Merlangius merlangus)
Author(s): Ghanawi, Joly
McAdam, Bruce J
Contact Email: b.j.mcadam@stir.ac.uk
Keywords: fatty acid biomarkers
Fish farming
halibut farming
linear discriminant analysis
salmon farming
wild fish populations
Issue Date: Jun-2020
Date Deposited: 6-Apr-2020
Citation: Ghanawi J & McAdam BJ (2020) Using fatty acid markers to distinguish between effects of salmon (Salmo salar) and halibut (Hippoglossus hippoglossus) farming on mackerel (Scomber scombrus) and whiting (Merlangius merlangus). Aquaculture Research, 51 (6), pp. 2229-2242. https://doi.org/10.1111/are.14568
Abstract: Presence of coastal aquaculture activities in marine landscapes is growing with impacts on the wild fish that share these habitats. However, it is difficult to disentangle subsequent ecological interactions between these activities and marine fish communities. We evaluated the impact of both salmon and halibut farms on mackerel (Scomber scombrus) and whiting (Merlangius merlangus) sampled near sea cages using condition indices and fatty acid (FA) biomarkers. Results of the stomach content analysis indicated that mackerel and whiting consumed waste feed which was also reflected in their modified FA profiles. Both mackerel and whiting had elevated levels of FAs that are of vegetable oils origin. The use of vegetable oils as replacement for marine oils is a lot more common in salmon farming than halibut farming. Additionally, the overall effects of the two fish farms were more pronounced in whiting than in mackerel sampled near the sea cages. By allowing discrimination between sources of trophic interactions, this method could lead to more informed decisions in managing different farming activities.
DOI Link: 10.1111/are.14568
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: Ghanawi, J, McAdam, BJ. Using fatty acid markers to distinguish between effects of salmon (Salmo salar) and halibut (Hippoglossus hippoglossus) farming on mackerel (Scomber scombrus) and whiting (Merlangius merlangus). Aquaculture Research 2020; 51: 2229-2242, which has been published in final form at https://doi.org/10.1111/are.14568. 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

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