Facing "Chasing Bai Yan": After looking for more than ten years after the losing arm with Bai Yan
Author:Changjiang Daily Time:2022.07.25
The Yangtze River Daily Da Wuhan Client July 25th News On the evening of July 21, the World Nature Conservation Alliance (IUCN) released the global endangered species red directory update report. It has survived 150 million years on the earth. "The King of Chinese Freshwater Fish", which is known as "the King of Freshwater Fish", was eventually announced and extinct from the Yangtze River.
On the evening of July 23, the second issue of the Yangtze River Daily's "Interview", the reporter, in the Aquatic Museum of the aquatic Biological Research Institute of the Chinese Academy of Sciences, worked with a researcher at the Institute of Aquatic Biological Research and Dr. Zhang Xianfu, the head of the Wuhan Science Popularization Regiment. The only member of the expert group in China and a researcher at the Yangtze River Institute of the Chinese Academy of Fisheries Sciences, Dr. Wei, was in danger. He chatted on topics such as "what are the warnings for human beings" and "endangered fish in the Yangtze River" and other topics.
What is Bai Yan? What does it look like? Many netizens lamented, "I have never met, I heard that it is forever." The "Interview" program attracted the attention of many netizens in the Internet, and watched 300,000 netizens on Weibo at the same time.
19 years ago, he last touched Bai Yan for the last time
Try to rescue but regret failed
On the evening of July 23, the second phase of the live interview column of the Yangtze River Daily's "Interview" was launched. The chief scientist and researcher of the Yangtze River Aquatic Research Institute of the Chinese Academy of Fisheries Sciences, the initiator of the Wuhan Yangtze River Chunghwa Protection Center Dr. Wei Wei, and Dr. Zhang Fangfeng, a researcher at the Institute of Aquatic Biological Research of the Chinese Academy of Sciences as a guest live room. Reporter Xiao Yan
"The last time I came into contact with Bai Yan was on January 24, 2003. This time it was actually Bai Yan bid farewell to our human beings. "People", in the live broadcast, recalled a past in the Nanxi River in Yibin, Sichuan. " I am very impressed. "
Dangerity introduced that thirty or forty years ago, he and the team met Bai Yan five or six times. At that time, everyone wanted to help. "Try to support it and then manually reproduce, so that this species can continue to survive. At that time, we were all such a goal. "From 1993 to rescue a white cricket to feed for a few days, it died for a few days. By December 1, 2002, a dying white magpie was found in the Sobia Water of Nanjing. After the 29th day, I still rolled my belly and died. "Dangerous Wei said it was a pity.
At that time in 2002, the crisis and colleagues brought the injured Bai Yan from Nanjing to the Yangtze River Fisheries Research Institute in Kunshan and domestic domestication and breeding bases. But when Bai Bai heard the sound of knocking, an accident occurred in the gap between the purification water pipe and the pool. "Dangerous said," In the 1980s and 1990s, he wanted to support his body. Mi Baiyu is not easy. "
Dangerous: "Although the white magpies are extinct, I still don’t want to propagate this result today."
In mid -September 2019, the IUCN (World Nature Protection Alliance) will organize an expert group evaluation in Shanghai for 3 days in Shanghai. The evaluation results are that the Chinese -specific species and national first -level key protection animals Yangtze River White River extinction. According to the danger, the international scientific community has strict judgment and announcement standards for the extinction of species.
According to Zhang Fangfeng, the degree of endangered of the international IUCN Redlis species is divided into 9 categories, including the danger, endangered, and extremely critical at the stage of extinction risk, and then extinction and extinction in the wild. According to the "World Nature Conservation Alliance" species level standards, the vowels said that extinction refers to the species that have not been found in the wild in the past 50 years. Wild extinction means that individuals of a species are only raised by cage or survive under the control of people.
"At that time, foreign experts believed that Bai Yan was extinct. Previously, I had never agreed." Dangerous said that according to a series of evaluation results such as digital models, in recent years, in recent years, he and the team have pressed by the team to follow up. The IUCN evaluation model studies the current status of Bai Yan. The conclusion is that white pupa may be extinct from 2005 to 2010, and may have been functionally extinct as early as 1993, that is, natural population cannot be reproduced. Even so, the danger is still very sad. "Although the white magpies are extinct, I still don't want to propagate this result." When talking about the reason for the extinction of Bai Yan, the crisis of Wei replied: "It is mainly excessive fishing, human activities, human activities The impact on it caused by it. "
"Bai Yan is a very wonderful species. The long nose is a precision detector of food. The mouth is very concealed under the nose." Zhang Fangfeng introduced that the aquatic biological museum of the Chinese Academy of Sciences in Wuhan has been. There is a 90 -year history. There are all types of protection fish, including Chinese sturgeon, Yangtze River, Yangtze River knife, and dark oriental. The biggest white ravioli specimen is 4 meters long, which has a history of 43 years.
Zhang Fangfeng: Very optimistic about the hope brought by "Ten Years Ban Fishing"
Academician Cao Wenxuan of the Institute of Aquatic Biology of the Chinese Academy of Sciences is the first scientist of the "Yangtze River Ten Years of Fishing". As early as 2006, he proposed at the Three Gorges Engineering and Technology Forum that in order to protect the large and small fish in the Yangtze River, Cao Wenxuan participated three times " "The Yangtze River Protection Law" formulation process for comments. In addition to regret, Zhang Fangfeng said that Zhang Fangfeng said that he is very optimistic about the hope brought by the "ten years for fishing"!
The Yangtze River porpoise is the core sign that reflects the ecological environment of the Yangtze River. In April, Wuhan Fishery Skynet Video Monitoring captured about 10 porpoons playing fishing and fishing near the Yangtze River Chaoskou Bridge. This is the largest group of porpoons in Wuhan this year. According to incomplete statistics, since 2020, there have been more than 20 times in the riverside section of Wuhan urban area, nearly 100 times. In addition to the Wuhan River section, the Ganjiang River and Nanchang of Nanjing, Yichang, and the Yangtze River have frequently appeared in porpoons.
"If the extinction of the Yangtze River fish such as the Baiyou dolphin and the white tadpoles is a lesson that brings us to us, then after practicing the Yangtze River Protection, the" Ten Years Ban Fishing "starts, and it has indeed brought us some good news." Zhang Fangfeng It is said that after the fishery activities that had affected fish in the past were banned, in recent years, the number of porpoons in the Yangtze River has gradually risen and the number of fish in the Yangtze River will also increase.
For the same endangered Chinese and Yangtze River, Zhang Fangfeng agreed with the critical point of view, "they are eggs, unlike dolphin mammals. At present, artificial reproduction has achieved results. With continuous improvement, the Yangtze River is very likely to return to the Yangtze River and home. Let's look forward to it together! "
(Changjiang Daily reporter Chen Jie Xu Jia correspondent Sun Hui)
【Edit: Ding】
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