Xinhua Full Media+丨 "Baby Catfish Baby" Growth Book

Xinhua News Agency, Xining, August 14th.

Xinhua News Agency reporters Lu Xueli and Li Linhai

With the end of another tourist season, Qinghai Lake ushered in a group of new lives. The reporter visited the nude carp ambulance center of Qinghai Lake a few days ago to record the process of artificial incubation and cultivation of catfish.

From the end of May to August each year, it is the season when the catfish tour is tours. In the Danshui River such as the Shaliu River and the Buha River, a group of catfish running against the flowers. However, this journey of life reproduction is not only difficult, but also faces dangerous danger of predation, weather mutations, and river interruptions. The survival rate of natural reproduction of catfish is less than two -thousandths. Science and technology workers from Qinghai Fisheries Administration adhere to the main travelers of catfish, carry out artificial proliferation and release, and help the breeding of catfish breeds.

The scientific name "Qinghai Lake Nude Carp" is a rare species unique to Qinghai Lake. It is the core species in the "water -fish -bird" ecosystem of Qinghai Lake. Due to the great fishing and other reasons, its resource volume once rushed to decline and endangered.

The Qinghai Lake Nude Carp Rescue Center, Gangcha County, Haibei Tibetan Autonomous Prefecture, Qinghai Province, is one of the "artificial large delivery rooms" of catfish. The reporter saw that in the experimental station workshop, there are large round water tanks, densely packed small fish seedlings look like small tadpoles. As the clear water flows in the water tank, it quickly turns around.

Zhou Weiguo, the director of the experimental station, introduced that the artificial incubation of catfish was divided into steps, incubation, broken film, development and other steps. The water flow in the water tank was introduced from the Shaliu River, which is two or three kilometers away. After 5 purification and filtration, it simulated the environment of the natural river water through the flow rate control. The process of incubation and cultivation is wonderful. The fertilized egg collected from the river was collected from the flow of the flow after 5 days of the flowing water. At about 20 days, starting the tie, at this time, it was like a child learned to walk, and his body color slowly turned black.

"Like raising dolls, I worry about the dolls. I don't stop for 24 hours. Every two hours feed egg yolk and soy noodle liquid, as well as wheel worms, commodity powder, etc." Zhou Weiguo said.

Located in the naked carp ambulance center of Qinghai Lake in the northern suburbs of Xining City, Qinghai Province, there is a large pond, which is the "kindergarten" of the babies of catfish. In a square pond, a small black fry is visible to swimming. Tian Wengen, the former head of the ambulance center, is throwing bait.

From the "big delivery room" to "kindergarten" is a relay of taking care of life. In order to welcome the arrival of the babies, the staff here should lead to the river water and sedimentary filtering one week in advance to keep the water quality fresh; cultivate some bait in advance and add the ponds to "fertilize" the water of the pond so that the long -distance travel can be allowed to travel long distances. Baby catfish "eat down the ponds", restore physical strength, and adapt to a new environment. Two days after the babies of the catfish go to the pond, sprinkle soybean milk to ensure their nutrition.

Qi Hongfang, a promotion researcher at the ambulance center, said that from the "big delivery room" to "kindergarten", the babies of catfish experienced a night's "aerobic travel (oxygen to water during transportation). Because catfish is cold water fish, the temperature at night is low, which can ensure that the small fish fry has a relatively stable temperature environment. At the same time, in order to maintain the stability of the catfish gene and the balance of the population, the same car fry comes from the same river channel, put the same pond, and when the year of the year will be processed, it will also be placed in the original river channel.

Qi Hongfang said that many years of practice shows that artificial proliferation and release are important ways to quickly supplement the number of biological groups, stabilize the structure of species, and increase the diversity of aquatic biological diversity. Since 2002, the Qinghai Lake Naked Carp Ambition Center has accumulated a total of 197 million naked carp. At present, the amount of nude carp in Qinghai Lake has increased to 108,500 tons. After evaluation of authoritative agencies, the contribution rate of proliferation and release to resource recovery is 23%.

In the next year, when these small fish seedlings are full of one year old, they will be shipped back to the release and return to the original river.

[Editor in charge: Zhao Wenhan]

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