The fatty acid (FA) composition of eggs and sperm, as well as the gonadal FA dynamics, were studied for the first time in the mussel Mytilus galloprovincialis Lam. (1819) at different stages of its sexual maturation. Currently, this species is being successfully cultivated in the Black Sea. As exemplified by 22 extracted and identified FAs having a chain length of 14–22 carbon atoms, the gonadal FA composition was shown to depend on the mollusk’s sexual maturation stage. An analysis of FA proportions demonstrated that saturated fatty acids (SFAs) account for 100% of the total FA content in female gonads at stages 1 to 3 and in male gonads at stages 1 and 5. The relative SFA content in eggs exceeds that in sperm. Mono- and polyunsaturated FAs (MUFA and PUFA) are characteristic both of male gonads and sperm in which their total content is higher than in female gonads and eggs. The FA content of the gonads and gametes in M. galloprovincialis follows the natural seasonal reproductive cycle of these bivalve mollusks.

中文翻译：

---

黑海双壳类软体动物 Mytilus galloprovincialis Lam 中性腺和配子的脂肪酸组成。在性成熟的不同阶段

首次在贻贝 Mytilus galloprovincialis Lam 中研究了卵子和精子的脂肪酸 (FA) 组成以及性腺 FA 动力学。（1819）在其性成熟的不同阶段。目前，该物种正在黑海成功养殖。以 22 种提取和鉴定的链长为 14-22 个碳原子的 FA 为例，性腺 FA 的组成取决于软体动物的性成熟阶段。FA 比例分析表明，饱和脂肪酸 (SFA) 占第 1 至第 3 阶段雌性性腺和第 1 和第 5 阶段雄性性腺中总 FA 含量的 100%。鸡蛋中的相对 SFA 含量超过精子中的. 单不饱和脂肪酸和多不饱和脂肪酸（MUFA 和 PUFA）是雄性性腺和精子的特征，它们的总含量高于雌性性腺和卵子。M. galloprovincialis 的性腺和配子的 FA 含量遵循这些双壳类软体动物的自然季节性繁殖周期。