2024-02-29 16:34:50动物植物
过度拥挤增加了树木死亡率,也许是热带森林生物多样性增加的原因

When a tree is surrounded by many similar individuals, its mortality increases, which is probably caused by specialized pathogens or herbivores. This effect occurs in forests all over the world, but is more pronounced in rare tropical tree species, which

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2024-02-29 16:34:46动物植物
非洲类人猿预计未来30年将频繁发生极端气候事件

African apes are already being exposed to climate change impacts, and will experience extreme events such as wildfires, heat waves and flooding more frequently in the next 30 years, according to a study published February 28 in the open-access journal PLO

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2024-02-29 16:34:43动物植物
严重急性呼吸系统综合征冠状病毒2型病毒如何获得球形

For centuries, coronaviruses have triggered health crises and economic challenges, with SARS-CoV-2, the coronavirus that spreads COVID-19, being a recent example. One small protein in SARS-CoV-2, the membrane protein, or M protein, is the most abundant an

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2024-02-29 16:34:40动物植物
禽流感病毒正在适应向海洋哺乳动物传播

The highly pathogenic avian influenza virus H5N1 has adapted to spread between birds and marine mammals, posing an immediate threat to wildlife conservation, according to a study from the University of California, Davis, and the National Institute of Agri

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2024-02-29 16:34:37动物植物
干燥而不死亡:追踪从苔藓到开花植物的缺水应对机制

Imagine you find the dried-up remains of a once green and lush philodendron on your bookshelf and realize you can't remember the last time you watered your houseplants. You soak the soil with water, hoping you can breathe life back into its desiccated hu

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2024-02-29 16:34:34动物植物
研究发现地球化学景观推动麝香牛繁殖成功

Researchers have studied Greenland musk oxen that have been followed for 25 years to see how their feeding habits affect their reproductive success. And it turns out that when they go to areas with more copper and selenium in the ground, they have more ca

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2024-02-29 16:34:33动物植物
小鼠研究发现,雌性嗅觉线索会加速死亡和生殖衰老

Sensory cues from the opposite sex can influence how animals age, a University of Otago-led study has found.

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2024-02-29 16:34:31动物植物
北大西洋露脊鲸雌性体型变小,导致出生人数减少

A team of oceanologists affiliated from the U.S. and Scotland has found reductions in body size of female North Atlantic right whales is resulting in fewer births, endangering the species. In their study, published in Royal Society Open Science, the group

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2024-02-29 16:34:27动物植物
构建用于海洋探索的仿生水母

Jellyfish can't do much besides swim, sting, eat, and breed. They don't even have brains. Yet, these simple creatures can easily journey to the depths of the oceans in a way that humans, despite all our sophistication, cannot.

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2024-02-29 16:34:23动物植物
新发现加速科学家开发耐黄病柑橘

It's one thing for a hybrid citrus tree to tolerate citrus greening disease (a.k.a. Huanglongbing) and quite another if it also produces orange-like fruit—especially if the juice makes for a delicious breakfast beverage. Now, that holy grail of traits co

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2024-02-29 16:34:21动物植物
研究小组揭示了驱动所有细胞膜形成的通用代码

Researchers at the University of Alberta have uncovered what they say has been the missing puzzle piece ever since the genetic code was first cracked.

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2024-02-29 16:34:18动物植物
大麻油被发现是治疗犬盘状红斑狼疮的有效药物

A team of veterinary students and scientists at the Federal University of Santa Catarina, in Brazil, working with the Cannabis Development and Innovation Center, also in Brazil, has found that oral administration of cannabis oil to dogs can reduce symptom

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