<tt id="6hsgl"><pre id="6hsgl"><pre id="6hsgl"></pre></pre></tt>
          <nav id="6hsgl"><th id="6hsgl"></th></nav>
          国产免费网站看v片元遮挡,一亚洲一区二区中文字幕,波多野结衣一区二区免费视频,天天色综网,久久综合给合久久狠狠狠,男人的天堂av一二三区,午夜福利看片在线观看,亚洲中文字幕在线无码一区二区
            .contact us |.about us
          Home BizChina Newsphoto Cartoon LanguageTips Metrolife DragonKids SMS Edu
          news... ...
                       Focus on... ...
             

          Scientists help save China's giant pandas in natural habitat
          ( 2002-05-13 09:34 ) (7 )

          Giant pandas love to play and eat, primarily bamboo — roughly 50 pounds of it per day. But with awkward reproductive habits, personality alone may not save them. Scientists are trying artificial breeding at the pandas' habitat in China. [Reuters]

          They just may be the world's most adored, most adorable animals, and there is no better place to fall under their spell than this remote, mountainous region where most of the world's wild pandas still live.

          Sichuan Province is also home to the world's two largest panda reserves. They are part tourist attraction, but mostly serious research centers, where scientists from China and other countries work side by side to save the panda from extinction with some notable success recently in captive breeding.

          "We have four cubs from last year," said Mike Allen, who went to the area from Zoo Atlanta. "We have five from the year before ... and they have made incredible progress here."

          Incredible, because pandas have enormous difficulty breeding on their own.

          Inept With the Ladies

          Many males, it seems, are downright inept at their reproductive role, a big problem since females are fertile for only three days each year. And even when they do succeed, pandas are born so tiny - smaller than a human hand - they struggle to survive. So scientists here have spent years helping the pandas help themselves.

          "Five or 10 years ago, there was less than a 50-percent survivorship rate for young cubs into adulthood," said Suzanne Hall, a reproductive specialist from the San Diego Zoo. "But in the last several years that's improved dramatically."

          Eleven-year-old male Gao Gao and 5-year-old Guo Guo recently were brought together to give it the old college try, and, as expected, it didn't work. So the professionals moved in, sedating Guo Guo with a dart and then wheeling her off to the operating room for a painless artificial insemination procedure.

          Today, this technique accounts for more than half the births of pandas in captivity.

          Despite all the human affection and the extensive breeding efforts under way here, the sad truth is the future of these animals is still very uncertain. Their natural habitat is still threatened by farming, logging and poaching. Even the growing numbers of well-meaning ecotourists are taking their toll as many roads and hotels are built in the wild.

          "If the population keeps expanding farther and farther into the forest and up the mountains, they're going to wipe out the pandas," Allen said.

          The hope is that human expansion can be tamed to give the scientists and the pandas more time to make more progress.

           
             
           
             

           

                   
                   
                 
                  .contact us |.about us
            Copyright By chinadaily.com.cn. All rights reserved  
          主站蜘蛛池模板: 国产亚洲无线码一区二区| 狠狠躁夜夜躁人人爽天天bl| 丁香五月婷激情综合第九色| 国产成人精品日本亚洲77上位| 亚洲中文字幕一区二区| 国产亚洲成AV人片在线观看导航| 99久久精品国产一区二区| 精品熟女日韩中文十区| 中文字幕乱码中文乱码毛片| 欧美视频二区欧美影视| 欧美午夜小视频| 精品人人妻人人澡人人爽人人牛牛| 99精品热在线在线观看视| 69天堂人成无码免费视频| 亚洲夂夂婷婷色拍ww47| 俄罗斯性孕妇孕交| 国产在线观看免费观看| 狠狠综合久久久久综| 亚洲欧美激情在线一区| 无码国内精品久久人妻蜜桃| 18禁无遮挡啪啪无码网站| 欧美饥渴熟妇高潮喷水| 一级有乳奶水毛片免费| 中国CHINA体内裑精亚洲日本| 国产精品∧v在线观看| 在线看国产精品三级在线| 久久久久久亚洲精品| 日韩精品一区二区三免费| 国产精品视频一区二区三区无码| 激情综合网激情五月俺也去| 三级国产在线观看| 国产精品毛片在线完整版| 天天影视色香欲综合久久| 国产成人av一区二区三区不卡| 国产区二区三区在线观看| 亚洲欧美色综合影院| 婷婷开心色四房播播| 国产精品露脸视频观看| 精品国产福利久久久| 国产乱弄免费视频观看| 国产国产久热这里只有精品|