National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.
Key Open Laboratory of Cold Water Fish Germplasm Resources and Breeding of Heilongjiang Province, Heilongjiang Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, China.
J Food Sci. 2021 Mar;86(3):1066-1080. doi: 10.1111/1750-3841.15647. Epub 2021 Feb 18.
The gonadal development; edible tissue ratio; and proximate, fatty acid, and free amino acid composition were examined and compared among Eriocheir sinensis samples from four sources. The gonadosomatic index (GSI) of Heilongjiang (HLJ) crabs was significantly higher than that of the other crabs from September to October (P < 0.05). Of all the edible tissues of E. sinensis, HLJ crab had the highest linolenic acid (18:3n3, LNA) and arachidonic acid (20:4n6, ARA) contents (P < 0.05), while Qinghai (QH) crab had the highest eicosapentaenoic acid (20:5n3, EPA) content (P < 0.05). The highest docosahexaenoic acid (22:6n3, DHA) and DHA/EPA contents were observed in Shandong (SD) crabs (P < 0.05), and the highest linoleic acid (18:2n6, LA) content was found in Shanghai (SH) crabs (P < 0.05). In conclusion, E. sinensis inhabiting relatively low-temperature regions (northern China) can initiate gonadal development earlier, and the quality of E. sinensis living in paddies and lakes is better than that of crabs living in ponds.
对来自四个产地的中华绒螯蟹（Eriocheir sinensis）样本进行了性腺发育、可食组织比例以及常规成分、脂肪酸和游离氨基酸组成的检测和比较。黑龙江（HLJ）蟹的性腺指数（GSI）从 9 月到 10 月显著高于其他蟹（P < 0.05）。在中华绒螯蟹的所有可食组织中，HLJ 蟹的亚麻酸（18:3n3，LNA）和花生四烯酸（20:4n6，ARA）含量最高（P < 0.05），而青海（QH）蟹的二十碳五烯酸（20:5n3，EPA）含量最高（P < 0.05）。山东（SD）蟹的二十二碳六烯酸（22:6n3，DHA）和 DHA/EPA 含量最高（P < 0.05），而 DHA 含量最高的则是 SD 蟹（P < 0.05），上海（SH）蟹的亚油酸（18:2n6，LA）含量最高（P < 0.05）。总之，栖息于相对低温地区（中国北方）的中华绒螯蟹可以更早地开始性腺发育，生活在稻田和湖泊中的中华绒螯蟹的品质要好于生活在池塘中的蟹。
