This study reports, for the first time, data on nutritional quality parameters in Tunisian mussels, Mytilus galloprovincialis, with an especial emphasis on lipid compounds. Mussel condition index (CI), proximate composition and fatty acid profiles were investigated for a one year period in order to identify the best harvesting period. Analysis revealed that polyunsaturated fatty acids (PUFA) were the dominant fatty acids with a prevalence of n-3 over n-6 forms. Pearson’s correlation indicated a strong relationship between CI and PUFA compound and Principal Components Analysis suggested that, from winter to summer, the product maintained a condition sufficiently good for marketing. The best CI and lipid quantity/quality occurred during summer and this may be used as criteria for product labelling. The study also included a thorough literature review that allowed data comparison on mussels from various Mediterranean sites and allowed the mussels from the Bizerte lagoon (North of Tunisia) to be differentiated.

这项研究首次报告了突尼斯贻贝（Mytilus galloprovincialis）的营养质量参数数据，特别强调脂质化合物。为了确定最佳收获期，对贻贝状况指数（CI），附近的成分和脂肪酸谱进行了为期一年的调查。分析显示多不饱和脂肪酸（PUFA）是主要的脂肪酸，其n-3的形式超过n-6形式。Pearson的相关性表明CI和PUFA化合物之间存在很强的关系，并且主成分分析表明，从冬季到夏季，该产品都保持了良好的营销条件。最好的CI和脂质数量/质量发生在夏季，这可以用作产品标签的标准。