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Chinese Journal of Applied Ecology ›› 2021, Vol. 32 ›› Issue (6): 2021-2027.doi: 10.13287/j.1001-9332.202106.025

• Special Features of Stable Isotope Ecology • Previous Articles     Next Articles

Stable isotope ratio characteristics and origin tracing of Portunus trituberculatus

PENG Kai-xiu1,2, CUI Yan-mei2,3, JIANG Fang2,3, LI Fan2,3, XU Bing-qing2,3, ZHANG Hua-wei2,3, TIAN Xiu-hui2,3, XU Ying-jiang2,3*   

  1. 1College of Food Sciences and Technology, Shanghai Ocean University, Shanghai 200120, China;
    2Shandong Marine Resource and Environment Research Institute, Yantai 264006, Shandong, China;
    3Shandong Key Laboratory of Marine Ecological Restoration, Yantai 264006, Shandong, China
  • Received:2020-12-23 Accepted:2021-04-01 Published:2021-12-15
  • Contact: * E-mail: xuyingjiang@yeah.net
  • Supported by:
    National Key R&D Program of China (2017YFC1600702), the Ministry of Natural Resources Key Laboratory Open Fund Project (MBSMAT-201904), Yantai Science and Technology Innovation Development Project of 2019 Shandong Technology Innovation Guidance Program (2020YT06000242) and Processing and Quality and Safety Control Post of Shandong Modern Agricultural Industry Technology System Algae Innovation Team (SDAIT-26-05).

Abstract: A method for geographical discrimination of Portunus trituberculatus was explored to provide technical support for the protection of geographical indication products and for tracing the origin of seafood. P. trituberculatus were collected from three major production areas, including the Yellow Sea, the Bohai Sea, and the East China Sea. The variations of carbon and nitrogen stable isotope values of origins and the correlation of stable isotope ratios in different tissues were analyzed. The results showed that there were significant differences in carbon and nitrogen stable isotope ratio among different origins. Significant isotope fractionation effects were observed among different tissues. The discriminant model was developed and the origin discriminant analysis was performed by the stable isotope ratios of different tissues in P. trituberculatus. The correct rate of origin diffe-rentiationf using carbon and nitrogen stable isotopes in muscle and gills (>95%) was significantly higher than that of hepatopancreas and gonad, indicating that stable isotope ratios of muscle and gills could effectively differentiate P. trituberculatus in different sea areas. This study filled the gap of stable isotope tracing technology for P. trituberculatus.

Key words: Portunus trituberculatus, stable isotope, origin tracing, tissue difference