According to the official website of the Chinese Academy of Fishery Sciences, freshwater Fisheries Research Center, Yang Jian's team of researchers at the Fisheries Microchemistry Laboratory has recently made new progress in the research on the protection technology of the native habitat of Yangcheng Lake hairy crabs based on stable isotope technology originating from aquaculture water and soil environments.
The stable isotope "fingerprints" of the third walking legs of Yangcheng Lake native crabs and "super-bathing" crabs from the lake area exhibit dynamic differences. This information was sourced from a screenshot of the official website of the Chinese Academy of Fishery Sciences.
Chinese mitten crabs are valuable aquatic products in our country, with significant price variations among products from different regions. Yangcheng Lake hairy crabs, representing national geographical indications for agricultural products, have long been troubled by counterfeit practices such as "bathing crabs".
In response to these issues, our team innovatively focused on stable isotope "fingerprints" and used the third walking legs of crabs as the target tissue for analysis. By comparing Yangcheng Lake native crabs with commercially farmed crabs from outside the area after one month of "super-bathing" cultivation in the same lake area, we effectively visualized the dynamic changes and differences in stable isotope "fingerprints" between the two types of crabs. The results successfully confirmed that even after one month of "super-bathing" cultivation in the Yangcheng Lake area, non-Yangcheng Lake crabs still lack the stable isotope "fingerprints" characteristic of the native habitat of Yangcheng Lake crabs.
This discovery further underscores the potential of stable isotope "fingerprints" as a means of distinguishing between Yangcheng Lake native crabs and "bathing crabs", following our previous successful identification of differences using crab carapace morphology and mineral element "fingerprints".
