At the same time, Indian amphibians face quite a lot of extinction threats, especially due to habitat loss and degradation.
摘要:大约3.5亿年前,第一批两栖动物登陆陆地,然后大约4000万年后,第一批羊膜动物出现了。
Around 350 million years ago, the first amphibious animals made their way onto land, and then some 40 million years later, the first amniotes emerged.
令人惊讶的是,鸟类和两栖动物能够在整个生命周期中再生毛细胞,这表明生物学存在并且应该是可能的。
Amazingly, birds and amphibians are capable of regenerating hair cells throughout their life, suggesting that the biology exists and should be possible for humans.
科学家认为,第一批两栖动物出现在3.5亿年前,而第一批羊膜动物出现在大约3.1亿年前。
Scientists believe the first amphibious animals emerged on land 350 million years ago and the first amniotes emerged around 310 million years ago.
大多数青蛙和其他两栖动物的肺部很简单,像气球一样,气体交换仅限于肺的外表面。
The lungs of most frogs and other amphibians are simple and balloon-like, with gas exchange limited to the outer surface of the lung.
两栖动物不住在雾山,但在马来西亚的一座山上。
The amphibian lives not in the Misty Mountains, but on a Malaysian mountain.
大约3.5亿年前,第一批两栖动物登陆陆地,然后大约4000万年后,第一批羊膜动物呈现了。
Around 350 million years ago, the first amphibious animals made their way onto land, and then some 40 million years later, the first amniotes emerged.
许多动物种类灭绝,包括大量海洋爬行动物、一些大型两栖动物、许多造礁生物和大量的头足类动物。
Many types of animal died out, including lots of marine reptiles,some large amphibians, many reef-building creatures and large numbers of cephalopod molluscs.
上个世纪80年代末,全球的爬虫学家发现,两栖动物数量遭遇了空前的下降,但他们没有找到原因。
In the late 1980s, herpetologists around the world found that amphibian populations were suffering unprecedented declines, but they struggled to understand exactly why.
Lau说,当时世界上只有非常少的两栖动物迁徙成功案例来引导团队的工作。
At that time, Lau said,there were very few cases of successful amphibian relocations in the world to guide the team's actions.
这些病毒肯定会感染鱼类和两栖动物,但它们并不知道会感染人类,”Kahn指出。
These viruses are definitely known to infect fish and amphibians, but they are not known to infect humans,” Kahn points out.
然后我们开始拍摄企鹅,它们聚集在岩石上,并捕捉到一些经常在海滩上栖息的两栖动物。
Then we took to shooting the penguins which swarmed upon the rocks,and to capturing some of the amphibious animals which frequented the beach.
这包括40%的两栖动物物种、33%的造礁珊瑚种类、25%的哺乳动物物种和14%的鸟类。
That includes 40 percent of amphibian species, 33 percent of reef-building corals, 25 percent of mammals, and 14 percent of birds.
在许多两栖动物中,还有第二个听小骨,即鳃盖(不要与鱼的同名结构相混淆)。
In many amphibians, there is also a second auditory ossicle, the operculum(not to be confused with the structure of the same name in fishes).
其中,1/8鸟类、1/3两栖动物和70%的植物面临危机。
One out of every eight species of bird; every third amphibian and 70% of the plants are facing the extinction.
在一些植物和两栖动物中,非重复DNA的比重不超过20%,成了基因组中的少数组分[7]。
In some plants and amphibians, the proportion of non-repetitive DNA is no more than 20%, becoming a minority component.
两栖动物是全球受威胁最严重的脊椎动物群体,新出现的传染病在其持续的人口下降中发挥着重要作用。
Amphibians are the most threatened group of vertebrates globally, and emerging infectious diseases play a large role in their continued population declines.
两栖动物胚胎暴露于低浓度的草甘膦(稀释5000倍),显示以下影响:.
Amphibian embryos were exposed to a tiny concentration of glyphosate(diluted 5000 fold) and showed the following effects:.
鱼类基因组不包含成为两栖动物所必需的信息,并且无处可获得此类信息。
The fish genome doesnot contain the information necessary to become an amphibian, and it has nowhere to get such information.
一些两栖动物,像牛蛙,花在寒冷的冬天,但解冻水湖泊和河流的底部。
Some amphibians, like the bullfrog, spend the winter in the frigid but unfrozen water at the bottom of lakes and rivers.
为什么所有的生命形态,植物、昆虫、海洋生物、两栖动物、鸟类和哺乳动物,都需要休息或睡眠?…….
Why do all forms of life, from plants, insects,sea creatures, amphibians and birds to mammals, need rest or sleep?”.
科学家已经发现了28种特有物种:两栖动物,五种哺乳动物,三只蝴蝶和十九只蜻蜓。
Already scientists have discovered 28 endemic species:one amphibian, five mammals, three butterflies, and 19 dragonflies.
有10%-30%的哺乳动物、鸟和两栖动物物种面临灭绝的威胁。
Some 10-30% of all mammal, bird, and amphibian species are threatened with extinction.
这项研究揭示了淡水鱼和两栖动物如何能够轻松地在海洋和内陆环境之间转变视野。
This study sheds light on how freshwater fish and amphibians are able to easily shift their vision between marine and inland environments.
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