久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

US EUROPE AFRICA ASIA 中文
World / Asia-Pacific

Antarctic fish species adapting to warming waters

(Xinhua) Updated: 2013-01-24 10:51

WELLINGTON - Some fish species living in the icy waters of the Antarctic can cope with warming waters, giving hope that they might adapt to the rising temperatures caused by global climate change, according to New Zealand researchers.

University of Canterbury biology professor Bill Davison said waters around the Antarctic Peninsula had risen in temperature by about 1 degree centigrade in recent years.

Antarctic fish species adapting to warming waters

The Sheldon Glacier with Mount Barre in the background, is seen from Ryder Bay near Rothera Research Station, Adelaide Island, Antarctica, in this NASA handout photo. A new NASA/British Antarctic Survey study examines why Antarctic sea ice cover has increased under the effects of climate change over the past two decades. [Photo/Agencies]

"I have been pushing fish to a 5-degree to 6-degree temperature change. In the short term, Antarctic water temperatures are not going to change by this much. Ultimately, things always change, and as temperatures increase so the distribution of animals in the marine environment will change," Davison said in a statement Thursday.

"My fish could well find themselves with a much more restricted distribution range, while other fish could move in and take their place," he said.

One of the greatest immediate threats to the Antarctic environment was the invasion of crabs, said Davison, who has been studying fish physiology for about 10 years.

"Temperatures have increased, but not enough to kill off the local fauna. However, it has risen enough that crabs, which have previously been unable to survive in this region, can now survive."

Fish could survive in the Antarctic because they could produce anti-freeze to stop their blood freezing, he said.

The bulk of his work had been on borch, a fish species that adapted to higher temperatures and radically changed its biochemistry and physiology, but this season he had concentrated on emerald rock cod, which did not adapt quite as well.

"Waters around the Antarctic Peninsula have risen by about 1 degree centigrade. This doesn't sound much, but actually represents a major shift in terms of the upper limits of some Antarctic animals."

Trudeau visits Sina Weibo
May gets little gasp as EU extends deadline for sufficient progress in Brexit talks
Ethiopian FM urges strengthened Ethiopia-China ties
Yemen's ex-president Saleh, relatives killed by Houthis
Most Popular
Hot Topics

...
主站蜘蛛池模板: 男人扒开双腿女人爽视频免费 | 欧美日本一区二区三区生 | 日本大臿亚洲香蕉大片 | 久草天堂| 91精品国产综合成人 | 在线精品视频在线观看高清 | 那种视频在线观看 | 久草国产在线 | 夜色毛片永久免费 | 直接看的毛片 | 88av视频在线观看 | 欧美日本高清视频在线观看 | 最新最好看免费毛片基地 | 成人午夜视频在线观 | 污全彩肉肉无遮挡彩色 | 一级特黄aaa大片在 一级特黄aaa大片在线观看 | 欧美在线视频免费观看 | 国产成人亚洲合集青青草原精品 | 日韩色道 | 天天看片日本 | 91精品国产综合久久久久 | 日韩 欧美 自拍 在线 视频 | 亚洲一区二区三区精品视频 | 99秒拍福利大尺度视频 | 亚洲精品国产精品国自产网站 | www欧美在线观看 | 久久99精品这里精品3 | 国产偷国产偷亚洲高清午夜 | 男女视频免费观看 | 欧美性色黄大片一级毛片视频 | 男女国产 | 国产碰碰 | 国产精品永久免费自在线观看 | 交videos人妖 | 日本一级毛片免费 | 久久精品视频1 | 日本亚洲欧美在线 | 一本综合久久 | 日本高清色本在线www游戏 | 国产精品黄在线观看观看 | 欧美一级片在线播放 |