http://m.xinhuanet.com/2019-04/14/c_1124364685.htm
700尾中华鲟“回家”了
2019-04-14 12:30:56 来源： 新华网
关注新华网
微信
微博
Qzone
0
评论
当天，数百名志愿者将放流的中华鲟抬至长江边放流点水池中，随着宜昌市民代表打开闸门并高喊“回家喽”，一条条黝黑的中华鲟顺着滑道滑进长江，向着前方游去。
据参与实施本次放流活动的中国三峡集团中华鲟研究所副所长李志远介绍，为提高人工繁殖中华鲟的野外生存能力，中华鲟研究所首次对放流的中华鲟实施为期两个月的野化训练。实验证明，子二代中华鲟在自然环境中能摄食和正常发育。
李志远说，为避免近亲繁殖造成中华鲟人工种群退化，实现中华鲟的优生优育，中华鲟研究所建立了反映中华鲟亲缘关系远近的遗传谱系，用于指导人工繁殖。此次中华鲟放流群体就包括2009—2017年中5个年份的梯队，对丰富野生中华鲟年龄梯队、提升野生群体遗传多样性具有重要意义。
据介绍，中华鲟达到性成熟的时间最小为9-12龄，无明显的第二性征，无法通过外观判断性别，这是中华鲟人工种群建设中性别配比和梯队筛选的最大难题。经过几年的技术攻关，中华鲟研究所科研人员实现了基因诊断技术在中华鲟早期性别鉴定上的应用。此次放流中华鲟中30尾是通过早期性别鉴定技术筛选出来的全雄性中华鲟。这是对自然条件下中华鲟性别比例失调的情况进行的一次有意义的科学尝试，试图通过人工放流的方式调整自然种群的年龄和性别结构。
自1984年首次实施中华鲟人工增殖放流，中华鲟研究所已累计向长江放流各类规格的中华鲟超过502万尾。近年来，三峡集团中华鲟研究所融合声呐标记监测、互联网及无线传输等多方面技术，建立了从宜昌至长江口、覆盖长江中下游近1800公里的放流中华鲟洄游监测系统。最新监测研究结果显示，最近几年放流中华鲟进入河口水域的比例超过50%，对中华鲟自然资源的补充发挥了重要的作用。
4月13日，几尾即将放流的中华鲟在水中游曳。
当日，在湖北宜昌举行的“2019年长江三峡中华鲟放流活动”中，700尾大规格中华鲟顺利放归长江，对中华鲟自然资源进行补充。这是中国三峡集团中华鲟研究所成立以来连续实施的第61次中华鲟放流活动。
此次中华鲟放流群体为“中青幼”相结合，包括2009到2017年间的5个年份梯队，还有30尾通过早期性别鉴定技术筛选出来的全雄性中华鲟，对丰富野生中华鲟年龄梯队、提升野生群体遗传多样性、调整自然条件下中华鲟性别比例失调具有重要意义。
中华鲟是长江旗舰物种，受生态环境的改变及人类活动的影响，其野生种群数量逐渐下降。为保护中华鲟，相关部门自1984年开启中华鲟增殖放流活动，累计向长江放流各类规格的中华鲟约600万尾。
新华社记者肖艺九摄
4月13日，即将放流的中华鲟在水中游曳。
当日，在湖北宜昌举行的“2019年长江三峡中华鲟放流活动”中，700尾大规格中华鲟顺利放归长江，对中华鲟自然资源进行补充。这是中国三峡集团中华鲟研究所成立以来连续实施的第61次中华鲟放流活动。
新华社记者肖艺九摄
4月13日，几尾即将放流的中华鲟在水中游曳。新华社记者肖艺九摄
4月13日，志愿者在放流中华鲟。新华社记者肖艺九摄
4月13日，中华鲟从放流通道滑入长江。新华社记者肖艺九摄
4月13日，中华鲟从放流通道滑入长江。新华社记者肖艺九摄
4月13日，中华鲟从放流通道滑入长江。新华社记者肖艺九摄
700 Chinese sturgeons "go home"
2019-04-14 12:30:56 Source: Xinhuanet
Pay attention to Xinhuanet
WeChat
Weibo
Qzone
0
comment
Xinhuanet Wuhan April 14th (Lianxun) "2019 Yangtze River Three Gorges China Lantern release activity" was held in Yichang City, Hubei Province on the 13th, 700 large-scale Chinese sturgeons of different ages were released into the Yangtze River.
On the same day, hundreds of volunteers carried the released Chinese sturgeon to the pool at the riverside discharge point. As the Yichang citizen representatives opened the gate and shouted “go home,” a dark Chinese sturgeon slid into the Yangtze River along the slide. , swim to the front.
According to Li Zhiyuan, deputy director of the China Three Gorges Research Institute, who is involved in the implementation of this release event, in order to improve the wild survival ability of the artificially propagated Chinese sturgeon, the Chinese sturgeon research institute implemented the two-month rewilding of the released Chinese sturgeon for the first time. training. Experiments have shown that the second-generation Chinese sturgeon can feed and develop normally in the natural environment.
Li Zhiyuan said that in order to avoid the degradation of the artificial population of the Chinese sturgeon caused by inbreeding and to achieve the prenatal and postnatal care of the Chinese sturgeon, the Chinese sturgeon research institute established a genetic lineage reflecting the close relationship of the Chinese sturgeon, which was used to guide artificial breeding. The Chinese sturgeon release group includes echelons of five years from 2009 to 2017, which is of great significance for enriching the wild Chinese sturgeon age echelon and improving the genetic diversity of wild populations.
According to reports, the minimum time for Chinese sturgeon to reach sexual maturity is 9-12 years old, and there is no obvious secondary sexual characteristics. It is impossible to judge gender through appearance. This is the biggest problem of gender ratio and echelon screening in artificial population construction of Chinese sturgeon. After several years of technical research, the researchers of the Chinese sturgeon research institute realized the application of genetic diagnosis technology in the early sex identification of Chinese sturgeon. The 30 Chinese sorghum was released from the Chinese male scorpion, which was screened out by early sex identification techniques. This is a meaningful scientific attempt to distort the gender ratio of Chinese sturgeon under natural conditions, trying to adjust the age and gender structure of natural populations by artificial release.
Since the first implementation of the artificial proliferation and release of the Chinese sturgeon in 1984, the China Sturgeon Research Institute has released more than 5.02 million Chinese sturgeons of various specifications to the Yangtze River. In recent years, the Three Gorges Group's China-Industrial Research Institute has integrated a variety of technologies, including sonar marker monitoring, Internet and wireless transmission, to establish a monitoring system for the release of China's migration from Yichang to the Yangtze River estuary covering nearly 1,800 kilometers of the middle and lower reaches of the Yangtze River. According to the latest monitoring research results, the proportion of Chinese sturgeons entering the estuary waters in recent years has exceeded 50%, which has played an important role in supplementing the natural resources of the Chinese sturgeon.
On April 13th, several Chinese sturgeons that are about to release will swim in the water.
On the same day, in the “2019 Yangtze River Three Gorges Chinese Rivers Release Activity” held in Yichang, Hubei Province, 700 large-scale Chinese sturgeons were smoothly released into the Yangtze River to supplement the natural resources of the Chinese sturgeon. This is the 61st China-China liberation activity that has been continuously implemented since the establishment of the China Three Gorges Group.
The Chinese sturgeon group is a combination of “Chinese youth”, including five years of echelon from 2009 to 2017, and 30 full-male Chinese sturgeons selected through early gender identification techniques, enriching the wild Chinese stupid age echelon It is of great significance to improve the genetic diversity of wild populations and adjust the gender imbalance of Chinese sturgeon under natural conditions.
The Chinese sturgeon is the flagship species of the Yangtze River. Due to changes in the ecological environment and human activities, the number of wild populations has gradually declined. In order to protect the Chinese sturgeon, the relevant departments have started the proliferation and release activities of the Chinese sturgeon since 1984, and have released about 6 million Chinese clams of various specifications to the Yangtze River.
Xinhua News Agency reporter Xiao Yijiu photo
On April 13th, the Chinese sturgeon that will be released will swim in the water.
On the same day, in the “2019 Yangtze River Three Gorges Chinese Rivers Release Activity” held in Yichang, Hubei Province, 700 large-scale Chinese sturgeons were smoothly released into the Yangtze River to supplement the natural resources of the Chinese sturgeon. This is the 61st China-China liberation activity that has been continuously implemented since the establishment of the China Three Gorges Group.
Xinhua News Agency reporter Xiao Yijiu photo
On April 13th, several Chinese sturgeons that are about to release will swim in the water. Xinhua News Agency reporter Xiao Yijiu photo
On April 13th, volunteers were releasing Chinese sturgeon. Xinhua News Agency reporter Xiao Yijiu photo
On April 13, the Chinese sturgeon slid into the Yangtze River from the discharge channel. Xinhua News Agency reporter Xiao Yijiu photo
On April 13, the Chinese sturgeon slid into the Yangtze River from the discharge channel. Xinhua News Agency reporter Xiao Yijiu photo
On April 13, the Chinese sturgeon slid into the Yangtze River from the discharge channel. Xinhua News Agency reporter Xiao Yijiu photo
700尾中华鲟“回家”了
2019-04-14 12:30:56 来源： 新华网
关注新华网
微信
微博
Qzone
0
评论
新华网武汉4月14日电（连迅）“2019年长江三峡中华鲟放流活动”13日在湖北省宜昌市举行，700尾不同年龄的大规格中华鲟被放归长江。当天，数百名志愿者将放流的中华鲟抬至长江边放流点水池中，随着宜昌市民代表打开闸门并高喊“回家喽”，一条条黝黑的中华鲟顺着滑道滑进长江，向着前方游去。
据参与实施本次放流活动的中国三峡集团中华鲟研究所副所长李志远介绍，为提高人工繁殖中华鲟的野外生存能力，中华鲟研究所首次对放流的中华鲟实施为期两个月的野化训练。实验证明，子二代中华鲟在自然环境中能摄食和正常发育。
李志远说，为避免近亲繁殖造成中华鲟人工种群退化，实现中华鲟的优生优育，中华鲟研究所建立了反映中华鲟亲缘关系远近的遗传谱系，用于指导人工繁殖。此次中华鲟放流群体就包括2009—2017年中5个年份的梯队，对丰富野生中华鲟年龄梯队、提升野生群体遗传多样性具有重要意义。
据介绍，中华鲟达到性成熟的时间最小为9-12龄，无明显的第二性征，无法通过外观判断性别，这是中华鲟人工种群建设中性别配比和梯队筛选的最大难题。经过几年的技术攻关，中华鲟研究所科研人员实现了基因诊断技术在中华鲟早期性别鉴定上的应用。此次放流中华鲟中30尾是通过早期性别鉴定技术筛选出来的全雄性中华鲟。这是对自然条件下中华鲟性别比例失调的情况进行的一次有意义的科学尝试，试图通过人工放流的方式调整自然种群的年龄和性别结构。
自1984年首次实施中华鲟人工增殖放流，中华鲟研究所已累计向长江放流各类规格的中华鲟超过502万尾。近年来，三峡集团中华鲟研究所融合声呐标记监测、互联网及无线传输等多方面技术，建立了从宜昌至长江口、覆盖长江中下游近1800公里的放流中华鲟洄游监测系统。最新监测研究结果显示，最近几年放流中华鲟进入河口水域的比例超过50%，对中华鲟自然资源的补充发挥了重要的作用。
当日，在湖北宜昌举行的“2019年长江三峡中华鲟放流活动”中，700尾大规格中华鲟顺利放归长江，对中华鲟自然资源进行补充。这是中国三峡集团中华鲟研究所成立以来连续实施的第61次中华鲟放流活动。
此次中华鲟放流群体为“中青幼”相结合，包括2009到2017年间的5个年份梯队，还有30尾通过早期性别鉴定技术筛选出来的全雄性中华鲟，对丰富野生中华鲟年龄梯队、提升野生群体遗传多样性、调整自然条件下中华鲟性别比例失调具有重要意义。
中华鲟是长江旗舰物种，受生态环境的改变及人类活动的影响，其野生种群数量逐渐下降。为保护中华鲟，相关部门自1984年开启中华鲟增殖放流活动，累计向长江放流各类规格的中华鲟约600万尾。
新华社记者肖艺九摄
当日，在湖北宜昌举行的“2019年长江三峡中华鲟放流活动”中，700尾大规格中华鲟顺利放归长江，对中华鲟自然资源进行补充。这是中国三峡集团中华鲟研究所成立以来连续实施的第61次中华鲟放流活动。
新华社记者肖艺九摄
700 Chinese sturgeons "go home"
2019-04-14 12:30:56 Source: Xinhuanet
Pay attention to Xinhuanet
Qzone
0
comment
Xinhuanet Wuhan April 14th (Lianxun) "2019 Yangtze River Three Gorges China Lantern release activity" was held in Yichang City, Hubei Province on the 13th, 700 large-scale Chinese sturgeons of different ages were released into the Yangtze River.
On the same day, hundreds of volunteers carried the released Chinese sturgeon to the pool at the riverside discharge point. As the Yichang citizen representatives opened the gate and shouted “go home,” a dark Chinese sturgeon slid into the Yangtze River along the slide. , swim to the front.
According to Li Zhiyuan, deputy director of the China Three Gorges Research Institute, who is involved in the implementation of this release event, in order to improve the wild survival ability of the artificially propagated Chinese sturgeon, the Chinese sturgeon research institute implemented the two-month rewilding of the released Chinese sturgeon for the first time. training. Experiments have shown that the second-generation Chinese sturgeon can feed and develop normally in the natural environment.
Li Zhiyuan said that in order to avoid the degradation of the artificial population of the Chinese sturgeon caused by inbreeding and to achieve the prenatal and postnatal care of the Chinese sturgeon, the Chinese sturgeon research institute established a genetic lineage reflecting the close relationship of the Chinese sturgeon, which was used to guide artificial breeding. The Chinese sturgeon release group includes echelons of five years from 2009 to 2017, which is of great significance for enriching the wild Chinese sturgeon age echelon and improving the genetic diversity of wild populations.
According to reports, the minimum time for Chinese sturgeon to reach sexual maturity is 9-12 years old, and there is no obvious secondary sexual characteristics. It is impossible to judge gender through appearance. This is the biggest problem of gender ratio and echelon screening in artificial population construction of Chinese sturgeon. After several years of technical research, the researchers of the Chinese sturgeon research institute realized the application of genetic diagnosis technology in the early sex identification of Chinese sturgeon. The 30 Chinese sorghum was released from the Chinese male scorpion, which was screened out by early sex identification techniques. This is a meaningful scientific attempt to distort the gender ratio of Chinese sturgeon under natural conditions, trying to adjust the age and gender structure of natural populations by artificial release.
Since the first implementation of the artificial proliferation and release of the Chinese sturgeon in 1984, the China Sturgeon Research Institute has released more than 5.02 million Chinese sturgeons of various specifications to the Yangtze River. In recent years, the Three Gorges Group's China-Industrial Research Institute has integrated a variety of technologies, including sonar marker monitoring, Internet and wireless transmission, to establish a monitoring system for the release of China's migration from Yichang to the Yangtze River estuary covering nearly 1,800 kilometers of the middle and lower reaches of the Yangtze River. According to the latest monitoring research results, the proportion of Chinese sturgeons entering the estuary waters in recent years has exceeded 50%, which has played an important role in supplementing the natural resources of the Chinese sturgeon.
On April 13th, several Chinese sturgeons that are about to release will swim in the water.
On the same day, in the “2019 Yangtze River Three Gorges Chinese Rivers Release Activity” held in Yichang, Hubei Province, 700 large-scale Chinese sturgeons were smoothly released into the Yangtze River to supplement the natural resources of the Chinese sturgeon. This is the 61st China-China liberation activity that has been continuously implemented since the establishment of the China Three Gorges Group.
The Chinese sturgeon group is a combination of “Chinese youth”, including five years of echelon from 2009 to 2017, and 30 full-male Chinese sturgeons selected through early gender identification techniques, enriching the wild Chinese stupid age echelon It is of great significance to improve the genetic diversity of wild populations and adjust the gender imbalance of Chinese sturgeon under natural conditions.
The Chinese sturgeon is the flagship species of the Yangtze River. Due to changes in the ecological environment and human activities, the number of wild populations has gradually declined. In order to protect the Chinese sturgeon, the relevant departments have started the proliferation and release activities of the Chinese sturgeon since 1984, and have released about 6 million Chinese clams of various specifications to the Yangtze River.
Xinhua News Agency reporter Xiao Yijiu photo
On April 13th, the Chinese sturgeon that will be released will swim in the water.
On the same day, in the “2019 Yangtze River Three Gorges Chinese Rivers Release Activity” held in Yichang, Hubei Province, 700 large-scale Chinese sturgeons were smoothly released into the Yangtze River to supplement the natural resources of the Chinese sturgeon. This is the 61st China-China liberation activity that has been continuously implemented since the establishment of the China Three Gorges Group.
Xinhua News Agency reporter Xiao Yijiu photo
On April 13th, several Chinese sturgeons that are about to release will swim in the water. Xinhua News Agency reporter Xiao Yijiu photo
On April 13th, volunteers were releasing Chinese sturgeon. Xinhua News Agency reporter Xiao Yijiu photo
On April 13, the Chinese sturgeon slid into the Yangtze River from the discharge channel. Xinhua News Agency reporter Xiao Yijiu photo
On April 13, the Chinese sturgeon slid into the Yangtze River from the discharge channel. Xinhua News Agency reporter Xiao Yijiu photo
On April 13, the Chinese sturgeon slid into the Yangtze River from the discharge channel. Xinhua News Agency reporter Xiao Yijiu photo
