南极气候变化影响海狗数量 Changes in the Antarctic climate are showing up in the fur seal population, say scientists. 科学家称,南极气候变化正在通过海狗种群的数量表现出来。 Three decades of data show the females of this species are being born smaller, and those that do survive to motherhood are breeding later in life. Subtle changes in their genetics are also being recorded. Researchers tell the journal Nature that a shift in a dominant climate pattern has affected the supply of the seals primary food source - krill. There has been a significant reduction in the size and the mass of the pups at birth, explained Dr Jaume Forcada from the British Antarctic Survey . Over 27 years, we see pups being born with 8% less body mass. We also see the females breeding later in age - at least by one or two years. And when they start breeding, they are bigger than they used to be 30 years ago. This kind of thing has been seen before in all sorts of mammals, and is classically an indication of food stress. The study was centred on South Georgia, a British Overseas Territory in the South Atlantic that falls within the influence of Antarctic waters.
上一篇: 电子设备是否毁了我们的睡眠
下一篇: 遗传控制鸟类迁徙路径
国际英语资讯:Trump to appoint new ambassador to UN in two or three weeks
体坛英语资讯:Feature: Benfica cheer their lost son
报告显示 中国千禧一代消费者引领奢侈品市场
国际英语资讯:World Bank, Kenya launch pilot agricultural observatory platform
体坛英语资讯:Orienteering marathon held in Ulan Bator to promote Mongolia-China friendship
国内英语资讯:Court for import expo established in Shanghai
国际英语资讯:Chicago mayor rejects President Trumps stop-and-frisk proposal
体坛英语资讯:Feature: Goretzkas tricky journey back to his roots
美国新任最高法院大法官承诺“独立和公正”
《请以你的名字呼唤我》续集叫啥好?网友这波脑洞感受一下
体坛英语资讯:Chinese players move into second round of 2018 Wuhan Open, Stephens crashes out
国际英语资讯:Brexit in spotlight as UK parliament reopens
国内英语资讯:Chinese leaders urge more efforts to promote mass entrepreneurship, innovation
体坛英语资讯:2018 Asian Para Games tickets on sale
一生中最易发胖的时期
国内英语资讯:China to enhance cultural relics protection cooperation with BRI countries
智能手机并不会伤害眼睛
国际英语资讯:Iran slams U.S. unilateralism as root cause of global insecurity
国内英语资讯:China eyes upgrading cooperation with Angola
娱乐英语资讯:Taylor Swift wins big at 2018 American Music Awards
国际英语资讯:Romanian FM reiterates desire to join Schengen
Loss of Language 语言的流失
国内英语资讯:China Focus: Chinese Premiers visit to Tajikistan, Netherlands, Belgium to intensify coope
再出漏洞! 脸书5000万账户遭到黑客攻击!
国内英语资讯:Senior legislators hold study session on reform, opening up
国内英语资讯:China launches blockchain pilot zone
真的吗?女性在开放办公室更注重着装打扮
研究发现 产后抑郁或与孕晚期日照不足有关
体坛英语资讯:Falcao hits target, Monaco extend winless streak in Ligue 1
国内英语资讯:China plans to speed up renovating shantytowns