A few days ago, researcher Yang Jian and his team members from the Key Laboratory of Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences used the Dao Kun River migration and sea migration based on his laboratory. No electronic probe otolith strontium and calcium microchemical discrimination technology and research basis, the ecological phenotype of 21-tailed coccidioides collected in the Luziyao section of the Ganjiang River in May 2020 was reconstructed and the migration history inversion was carried out Of exploration.
According to research, 16 of them are typical anadromous scorpionfish. , Accounting for 76%of the total number of Coilia spp. specimens, which is much higher than the related proportion reported so far in Poyang Lake and its water system. Although it is reported in the literature that no anadromous coilia spp. has been found in the Ganjiang River Basin in the past 10 years, the above results confirm the discovery of anadromous courgettes in the Ganjiang River for the first time. This shows that under the national policy of prohibiting the productive fishing of three natural resources such as the Yangtze Coilia spp. and the “ten-year ban on fishing” in the Yangtze River, the resources and habitats of the migratory coilia spp. in the waters of the Gan River have a tendency to recover. It is appropriate to carry out a comprehensive survey of potential threat factors such as the distribution areas and spawning grounds of related groups in the lower reaches of the Ganjiang River, as well as water conservancy projects, river sand dredging and other potential threats, so as to effectively protect the Coilia spp. resources and key habitats in the waters.
The above research papers have been officially accepted by the EI journal source”Lake Science”. Yang Yifan, a graduate student in the Key Laboratory of the Academy, is the first author, and researcher Yang Jian is the corresponding author. The Fisheries Research Institute of Jiujiang City, Jiangxi Province participated in the relevant work as a cooperative unit. This research was supported by the Yangtze River Special Project of Agricultural Finance of the Ministry of Agriculture and Rural Affairs (CJDC-2017-22).