波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒

  .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  
波多野结衣办公室双飞_制服 丝袜 综合 日韩 欧美_网站永久看片免费_欧美一级片在线免费观看_免费视频91蜜桃_精产国品一区二区三区_97超碰免费在线观看_欧美做受喷浆在线观看_国产熟妇搡bbbb搡bbbb_麻豆精品国产传媒
av电影中文字幕| 亚洲最大的黄色网址| 久久国产柳州莫菁门| 99久久99久久精品国产| 91精品国产欧美一区二区成人| 精品久久久久久综合日本欧美 | 中文字幕第3页| 精品女人久久久| 在线播放欧美女士性生活| 中文字幕欧美三区| 亚洲第一福利视频在线| 国产乱码精品一品二品| 亚洲色图欧美日韩| 日韩成人黄色片| 久久综合一区二区| 亚洲小说欧美激情另类| 成人激情午夜影院| 成年人在线免费看片| 欧美精品一区二区三区在线| 午夜视频一区二区| av日韩在线网站| 亚洲一二三精品| 欧美一区二区久久久| 日本免费在线视频不卡一不卡二| 成人av电影观看| 国产精品无码无卡无需播放器| 91精品国产一区二区三区香蕉| 亚洲免费电影在线| 捆绑紧缚一区二区三区视频| 污污免费在线观看| 日韩午夜激情av| 亚瑟在线精品视频| 欧美成人午夜精品免费| 欧美日韩国产电影| 伊人开心综合网| 99在线精品免费| 欧美日韩国产小视频在线观看| 日韩精品五月天| 久久久久亚洲AV成人网人人小说| 色老头久久综合| 1000部国产精品成人观看| 国产剧情一区二区| 夜夜春很很躁夜夜躁| 国产精品天天看| 国产91精品免费| 天天色影综合网| 国产农村妇女毛片精品久久麻豆 | 欧美日韩一区二区在线视频| 国产精品护士白丝一区av| 国产一区二区三区黄视频| av激情在线观看| 亚洲国产精品一区二区www| 大又大又粗又硬又爽少妇毛片 | 日本美女一区二区三区| 欧洲性xxxx| 亚洲另类在线一区| 香蕉视频黄色在线观看| 国产精品污污网站在线观看| 中文字幕一区二区三区人妻在线视频| 日韩欧美在线123| 懂色av一区二区在线播放| 欧美人与z0zoxxxx视频| 国产做a爰片久久毛片 | 日韩激情中文字幕| 日本黄色激情视频| 亚洲综合另类小说| 白丝女仆被免费网站| 国产精品短视频| 双性尿奴穿贞c带憋尿| 国产精品不卡在线| 国产精品300页| 日韩精品一区二区三区蜜臀 | 色狠狠av一区二区三区| 亚洲黄色av一区| 欧洲美一区二区三区亚洲| 国产日韩欧美精品综合| 国产成人aaaa| 欧美在线免费视屏| 日韩制服丝袜先锋影音| 蜜桃av.com| 日本在线不卡视频一二三区| 欧美又粗又大又长| 久久国产生活片100| 欧美最猛性xxxxx直播| 国精产品一区一区三区mba桃花 | 视频一区中文字幕国产| 精品国产精品国产精品| 免费高清在线一区| 三级影片在线观看| 日韩精品国产欧美| 91传媒视频在线播放| 国产激情视频一区二区三区欧美| 88在线观看91蜜桃国自产| 成人一区二区三区中文字幕| 精品少妇一区二区三区视频免付费| 91碰在线视频| 欧美成人女星排名| 亚洲美女精品视频| 中文字幕亚洲精品在线观看| 亚洲AV无码成人精品区明星换面| 亚洲妇女屁股眼交7| 色婷婷久久久亚洲一区二区三区| 国产在线国偷精品免费看| 欧美一区二区三区免费| 欧美体内she精高潮| 国产精品久久久久久久久免费樱桃 | 国产精品美女一区二区| 亚洲AV无码国产成人久久| 亚洲成人午夜电影| 欧美在线|欧美| 成人av综合在线| 欧美激情中文字幕一区二区| www.av天天| 蜜臀99久久精品久久久久久软件| 免费在线观看h片| 国产精品99久久不卡二区| 亚洲精品一线二线三线无人区| 亚洲av成人片色在线观看高潮 | 亚洲第一激情av| 欧美中文字幕一区二区三区| 成人动漫中文字幕| 国产精品美女久久久久aⅴ| 在线观看亚洲大片短视频| 麻豆国产欧美日韩综合精品二区| 日韩一区二区三区观看| 欧美午夜精品一区二区| 亚洲自拍偷拍网站| 欧美区视频在线观看| 91在线播放网址| 久久精品夜色噜噜亚洲aⅴ| 久久久久久九九九九九| 日韩精品三区四区| 欧美tk丨vk视频| 男人天堂av电影| 精品一区二区成人精品| 777亚洲妇女| 波多野结衣有码| 日本一道高清亚洲日美韩| 日韩免费电影网站| 少妇久久久久久久久久| 激情综合色播激情啊| 国产片一区二区| 麻豆天美蜜桃91| 97久久超碰精品国产| 一区二区三区四区精品在线视频 | 日韩1区2区3区| 欧美成人aa大片| 日韩不卡av在线| 成人丝袜视频网| 悠悠色在线精品| 在线综合+亚洲+欧美中文字幕| 免费观看av网站| 国产精品一区二区黑丝| 国产精品久久看| 欧美网站大全在线观看| 成人av动漫在线| 亚洲综合色噜噜狠狠| 欧美一区二区三区性视频| 丰满少妇高潮一区二区| 国产精品综合网| 亚洲日本一区二区三区| 内射一区二区三区| 91免费看`日韩一区二区| 亚洲国产精品一区二区www| 日韩欧美色综合网站| 人成免费在线视频| av一二三不卡影片| 亚洲成人激情自拍| 久久综合999| 色香蕉成人二区免费| xfplay5566色资源网站| 国产一区二区91| 亚洲精品美国一| 欧美电影免费观看高清完整版 | 国产精品剧情在线亚洲| 欧美亚洲国产bt| caopeng视频| jlzzjlzz欧美大全| 日韩精品亚洲一区二区三区免费| 国产网站一区二区| 欧美日韩国产综合一区二区 | 国产日韩欧美电影| 在线免费观看视频一区| 97伦伦午夜电影理伦片| 成人免费视频视频在线观看免费 | 色999日韩国产欧美一区二区| 精品一区二区视频在线观看| 国产福利一区二区三区| 亚洲国产一区视频| 久久久久久**毛片大全| 强制高潮抽搐sm调教高h| 人妻精油按摩bd高清中文字幕| 久久不见久久见中文字幕免费| 亚洲人成7777| 欧美va日韩va| 精品视频123区在线观看| 国产在线免费av| 99精品一区二区三区无码吞精| 国产传媒久久文化传媒| 日本最新不卡在线|