Mytilus edulis kept in net bags in Kerteminde Bay (a–d) and Salling Sund (e–h) in the year 2010 at °C and  psu and °C and  psu, respectively. (a and e) condition index (CI, ), shell length (L, ), and dry weight of soft parts (W, ); (b and f) glycogen (), protein (), and lipid () contents; (c and g) sum of unsaturated fatty acids (UFAs, ) and specific concentrations of DHA (), EPA (), sum of oleic, linoleic, and -linolenic acids (), and palmitoleic acid (); (d and h) sum of saturated fatty acids (SFAs, ) and specific concentrations of stearic (), palmitic (), myristic (), and lauric acids (). Numbers of mussels used for analyses are indicated in Table 1. Data points are mean values + or − S.D.