2025-01-20 23:14:43动物植物
心灵之眼:鱼如何通过大脑的松果体感知颜色和亮度

We see color because photoreceptor cones in our eyes detect light waves corresponding to red, green, and blue, while dimness or brightness is detected by photoreceptor rods. Many non-mammalian vertebrates like fish, however, are known to detect color and

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2025-01-20 23:00:13动物植物
识别榛子产地以打击食品欺诈

A team from the University of Barcelona is leading a study that improves the technology available to identify the geographical origin and variety of hazelnuts, and thus avoid commercial fraud and food safety problems linked to the consumption of these nut

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2025-01-20 22:46:40动物植物
粪便数据:粪便如何改善食草动物分布的全球地图

Researchers have used dung records to create high-resolution maps of herbivore distribution around the world. Their study, published in Nature Food, reveals a strong positive relationship between dung presence and grazing pressure, meaning the amount of d

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2025-01-20 22:33:12动物植物
群体基因组分析揭示芹菜复杂的育种历史

Celery, a key vegetable in the Apiaceae family, is widely valued for its nutrition and medicinal uses. It is commonly categorized into three varieties: A. graveolens var. dulce (common celery) with thick and solid petioles; A. graveolens var. rapaceum (ce

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2025-01-20 22:19:12动物植物
基因编辑的土壤细菌可以为玉米生产提供第三氮源

If corn was ever jealous of soybean's relationship with nitrogen-fixing bacteria, advancements in gene editing could one day level the playing field. A recent study from the University of Illinois Urbana-Champaign shows that gene-edited bacteria can supp

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2025-01-20 22:06:13动物植物
DNA马达可以改变方向,重塑基因理解

Scientists from Delft, Vienna, and Lausanne discovered that the protein machines that shape our DNA can switch direction. Until now, researchers believed that these so-called SMC motors that make loops into DNA could move in one direction only. The discov

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2025-01-20 21:55:57动物植物
垂钓者瞥见逆戟鲸“协调”攻击鲸鱼的罕见时刻

While fishing off the coast of Honduras in 2023, a group of anglers stumbled upon a rare sight: a pod of orcas hunting down a sperm whale.

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2025-01-20 21:42:58动物植物
蜂鸟麻木如何在不确定的环境中维持日常生存

Hummingbirds are extremely small but remarkably tough. Some species make migrations of more than 9,000 km (about 5,590 miles) a year. Their journeys are largely fueled by nectar, which is sipped from wildflowers and converted to fat.

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2025-01-20 21:32:19动物植物
土壤中的遗传物质可以表明稀有蛇的存在

Scientists have developed a new method to monitor the elusive eastern indigo snake, the longest native snake in the United States. This innovative approach looks for traces of environmental DNA in soil samples and can significantly bolster efforts to cons

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2025-01-20 21:22:09动物植物
全球研究揭示了风速与植物水力学之间的关系

A research team from the South China Botanical Garden of the Chinese Academy of Sciences (CAS) studied the global variability of plant hydraulics in relation to wind speed. Their findings are published in Nature Ecology & Evolution.

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2025-01-20 21:08:02动物植物
二战前调查的贻贝床仍然繁荣

A mussel bed along Northern California's Dillon Beach is as healthy and biodiverse as it was about 80 years ago, when two young students surveyed it shortly before Pearl Harbor was attacked and one was sent to fight in World War II.

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2025-01-20 20:55:28动物植物
我该留下还是该走?研究表明,幼鱼何时离开家

Shell-dwelling cichlids take intense care of their offspring, which they raise in abandoned snail shells. A team at the Max Planck Institute for Biological Intelligence used 3D-printed snail shells to find out what happens inside.

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