2024-08-28 03:07:48动物植物
研究发现,在东非大草原上,一头大象可以养活200多万只蜣螂

How many dung beetles are there in East Africa? That question inspired a research project more than 20 years ago when Frank Krell was a research entomologist with the Natural History Museum London. Throughout a three-year-long project along with his wife,

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2024-08-28 02:56:02动物植物
研究确定了美国地区和政策目标下可持续航空燃料的最佳生物能源作物

Researchers analyzed the financial and environmental costs and benefits of four biofuels crops used to produce sustainable aviation fuels in the U.S. They found that each feedstock—corn stover, energy sorghum, miscanthus or switchgrass—performed best in a

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2024-08-28 02:43:55动物植物
研究表明,产卵哺乳动物内外都是独一无二的

The identification of a key gene in monotremes has increased our understanding of why the stomachs of platypuses and echidnas are atypically small, non-acidic, and, in the instance of platypuses, lack a pyloric sphincter.

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2024-08-28 02:29:31动物植物
下一代生物传感器揭示赤霉素在豆类固氮中的关键作用

Researchers at the University of Cambridge have demonstrated that the plant hormone gibberellin (GA) is essential for the formation and maturation of nitrogen-fixing root nodules in legumes and can also increase nodule size. They identified the specific t

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2024-08-28 02:17:29动物植物
自然旱地保护严重不足:研究预测人类土地利用转换将带来重大威胁

Drylands cover about 42% of the Earth's land surface and are increasingly threatened by human land-use pressures like agriculture, alternative energy sources, overgrazing and climate change. Up to a third of the global human population living in drylands

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2024-08-28 02:04:49动物植物
应力颗粒在血管形成中发挥了意想不到的作用

The behavior of the cells that make up our blood vessels is crucial to our well-being. Conditions such as inflammation, oxygen deprivation and viral infection can stress these cells and disrupt the formation of new, often pathological, blood vessels. Now

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2024-08-28 01:52:18动物植物
研究发现,蝴蝶积累的静电足以在不接触的情况下吸引花粉

Butterflies and moths collect so much static electricity while in flight, that pollen grains from flowers can be pulled by static electricity across air gaps of several millimeters or centimeters.

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2024-08-28 01:40:14动物植物
科学家发现,在深海黑暗中寻找光明和伴侣时,雄性龙鱼的眼睛会变大

A small but ferocious predator, the male dragonfish will apparently do anything for love. Or at least to find a mate. A study by researchers at Boston College found that the eyes of the male dragonfish grow larger for mate-seeking purposes, making the dra

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2024-08-28 01:28:53动物植物
塔可形节肢动物化石为第一批下颌骨的历史提供了新的见解

A new study, led by paleontologists at the Royal Ontario Museum (ROM) is helping resolve the evolution and ecology of Odaraia, a taco-shaped marine animal that lived during the Cambrian period.

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2024-08-28 01:17:17动物植物
成功抗击疟疾的意外后果

For decades, insecticide-treated bed nets and indoor insecticide spraying regimens have been important—and widely successful—treatments against mosquitoes that transmit malaria, a dangerous global disease. Yet for a time, these treatments also suppressed

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2024-08-28 01:05:56动物植物
世界上最具生产力的海洋生态系统之一的生物多样性如何变化

In research published in Global Change Biology, investigators have examined DNA within ocean bottom sediment cores to assess changes in living organisms within one of the world's most productive marine ecosystems: the Atacama Trench in the eastern Pacifi

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2024-08-28 00:52:34动物植物
研究人员首次记录了鲨鱼被船撞击的图像和数据

Hours after tagging an endangered basking shark off the coast of Ireland in April, researchers captured what they believe is the first ever video of a shark or any large marine animal being struck by a boat.

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