China News Agency Yichang, April 22 (Guo Xiaoying, Dong Xiaobin) "2020 Yangtze River Three Gorges Chinese Sturgeon Release Activity" was held on the 22nd at the Yangtze River Rare Fish Release Site in Yichang City, Hubei Province. 10,000 children of the second generation Chinese sturgeon of different ages were released Returning to the Yangtze River, this is the largest number of second-generation Chinese sturgeon in the past.
The event was co-sponsored by the People's Government of Yichang City and China Three Gorges Group Co., Ltd. (hereinafter referred to as the "Three Gorges Group"). The event strictly complied with the relevant requirements for epidemic prevention and control, and adopted a method of not gathering, organizing volunteers, or holding event ceremonies. get on. All the people who participated in the release activities held a personal health green code, followed the body temperature tracking monitoring and wore a mask throughout.
At 9 o'clock that day, as the transparent pool gate opened, a large and small Chinese sturgeon slipped along the slide towards the Yangtze River and disappeared in the distance ... It is expected that they will reach the estuary in more than 20 days.
Jiang Wei, a researcher at the China Sturgeon Research Institute of the Three Gorges Group, introduced that this time the second generation of Chinese sturgeon from the five-year echelon between 2009 and 2019 was released. Among them, there were 10 all-male Chinese sturgeons born in 2009. "This helps to enrich the age echelon of wild Chinese sturgeon, enhance the genetic diversity of wild populations, and adjust the imbalance of the sex ratio of Chinese sturgeon under natural conditions."
After the Chinese sturgeon is released to the Yangtze River, the Three Gorges Group will use a monitoring system covering nearly 1,800 kilometers in the middle and lower reaches of the Yangtze River to carry out sonar tracking. This system is currently the most comprehensive and comprehensive monitoring system for the release of Chinese sturgeon migration in China. After completing the tracking and monitoring of the Chinese sturgeon, the Three Gorges Group will explore the marine life history of the Chinese sturgeon for the first time within this year, so as to better assess the survival status of the Chinese sturgeon.
The Chinese sturgeon is one of the oldest vertebrates on the earth, with a history of about 140 million years ago. It is known as the "living stone of the Yangtze River" and "panda in water". Due to the disturbance of human activities, the natural population size of the Chinese sturgeon continued to decline. In 1988, the Chinese sturgeon was listed as a "national key protected wildlife"; in 2010, the World Conservation Union (IUCN) listed the Chinese sturgeon as an "internationally endangered species."
Since 1984, the Chinese Sturgeon Research Institute of the Three Gorges Group has been carrying out Chinese sturgeon release activities every year without interruption. At present, it has released more than 5.03 million Chinese sturgeons to the Yangtze River and more than 28,000 Chinese sturgeons, the second generation of Chinese sturgeons, to supplement the natural Chinese sturgeon. Resources, and played an important role in realizing the sustainable reproduction of Chinese sturgeon.
The second-generation Chinese sturgeon full artificial breeding is a technical breakthrough made by the Three Gorges Group Chinese sturgeon research institute in the country in 2009, and has been successful for many years afterwards. The mastery of this technology indicates that artificial sturgeon of Chinese sturgeon has got rid of dependence on wild resources. (Finish)