搜索结果: 241-255 共查到“国际动态 动物学”相关记录1160条 . 查询时间(2.062 秒)
Egg-Sitting Glassfrogs Create Safe Exit for Tadpoles
Egg-Sitting Glassfrogs Safe Exit Tadpoles
2017/4/27
Glassfrogs may be somewhat see-through, but they have still managed to a hide an important secret—they are dedicated mothers and fathers that invest time in brooding their eggs. Smithsonian scientists...
Glassfrogs Show Surprising Diversity of Parental Strategies
Glassfrogs Diversity Parental Strategies
2017/4/27
Laid on leaves hanging over streams in tropical rainforests, glassfrog eggs are tasty snacks for snakes, insects and other predators until they hatch and drop into the streams to begin life as tadpole...
哺乳动物基因组三维结构首次确定
哺乳动物 三维结构 细胞分裂
2022/3/24
英国医学研究理事会网站日前报道称，英国科学家从单个细胞中确定出完整保存的哺乳动物基因组的首个3D结构，显示了细胞核内所有染色体中的DNA是如何复杂地折叠在一起的。该项研究成果发表在近日出版的《自然》杂志上。
Fly-over states matter when understanding–and saving-migratory birds
Fly-over states matter saving-migratory birds
2017/3/30
Around the world, thousands of migratory animals travel hundreds or even thousands of miles each year. The journey of migratory animals is more important than their destination. Scientists use the end...
基因编辑技术CRISPR/Cas9又立新功。曾成功克隆出多莉羊的英国爱丁堡大学罗斯林研究所近日发布公告称，该校科研团队再次取得“震惊世界”的科研突破：他们使用这一最新基因编辑工具，培育出一批能抵御致命性猪蓝耳病病毒感染的“超级猪”。这一技术一旦获得使用许可，全世界养猪产业将每年减少数十亿英镑损失。相关研究发表在最新一期的美国《公共科学图书馆·病原体》杂志上。
Flat-footed competitors have fighting advantage
Flat-footed competitors fighting advantage
2017/2/16
A heel-down posture -- a feature that separates great apes, including humans, from other primates -- confers advantages in fighting, according to a new study published today in the journal Biolog...
Flat-footed competitors have fighting advantage
Flat-footed competitors fighting advantage
2017/3/14
A heel-down posture -- a feature that separates great apes, including humans, from other primates -- confers advantages in fighting, according to a new study published today in the journal Biolog...
In a possible step forward for gene therapy,Stanford researchers made mice glow like fireflies
step forward gene therapy Stanford researchers mice glow fireflies
2017/3/14
Timothy Blake, a postdoctoral fellow in the Waymouth lab, was hard at work on a fantastical interdisciplinary experiment. He and his fellow researchers were refining compounds that would car...
Extreme temperatures threaten desert songbirds with death by dehydration
Extreme temperatures threaten desert songbirds death by dehydration
2017/3/13
According to NASA, 2016 was the hottest year on historical record. Globally, the increase amounted to nearly 1.8 degrees Fahrenheit. And while that might not sound like much of an increase, it could m...
Wolfing it Down:Brown Bears Reduce Wolf Kill Rate say USU Ecologists
Wolfing it Down Brown Bears Reduce Wolf Kill Rate say USU Ecologists
2017/2/16
If you’ve ever been elbowed out of the way at the dinner table by older, stronger siblings, you’ll identify with wolves competing with larger bears for food. A study by Utah State University ecologist...
Wolfing it Down:Brown Bears Reduce Wolf Kill Rate say USU Ecologists
Wolfing it Down Brown Bears Reduce Wolf Kill Rate USU Ecologists
2017/3/13
If you’ve ever been elbowed out of the way at the dinner table by older, stronger siblings, you’ll identify with wolves competing with larger bears for food. A study by Utah State University ecologist...
Case Western Reserve University researcher discovers fish uses sneaking behavior as stealth mating strategy
Case Western Reserve University researcher fish uses sneaking behavior stealth mating strategy
2017/3/13
While a dominant male fish from northern Mexico mates with a female, a small fella bides his time in the offing. Suddenly, the little guy darts in ahead of Mr. Big and plants his seeds on freshly laid...
Reach back far enough in the family tree of a snail or a clam and you’ll find a spiny little slug with tiny teeth, wearing a helmet.Scientists have unearthed the 480-million-year-old remains of a crea...
A frog uses its whip-like tongue to snag its prey faster than a human can blink, hitting it with a force five times greater than gravity. How does it hang onto its meal as the food rockets back into i...
Scientists Discover a Way to Sequence DNA of Rare Animals
Scientists Sequence DNA Rare Animals
2017/2/16
Rare and extinct animals are preserved in jars of alcohol in natural history museum collections around the world, which provide a wealth of information on the changing biodiversity of the planet. Thes...