University of Glasgow, University of Glasgow, affiliation not provided to SSRN, University of Glasgow, University of Glasgow, University of Glasgow, University of Glasgow, University of the West of Scotland, Bantry Marine Research Station, Bantry Marine Research Station, affiliation not provided to SSRN, Marine Institute Ireland, University of Strathclyde, Scottish Sea Farms Ltd, Marine Institute Ireland, affiliation not provided to SSRN, affiliation not provided to SSRN, Marine Institute Ireland, University of Glasgow and University of Glasgow