搜索结果: 61-75 共查到“国际动态 昆虫学”相关记录206条 . 查询时间(3.133 秒)
姿势和摆动控制蝴蝶飞行
姿势 摆动
2016/3/21
蝴蝶利用较大的翅膀和缓慢的扑闪在空中飞行。据了解，蝴蝶每秒钟拍动约10次翅膀，而蜜蜂要拍动200次左右。一个最新模型展示了它们如何控制这种不平稳且飘忽不定的飞行：正确的姿势加上一点点摇摆。
小蜻蜓打破昆虫迁徙纪录（图）
小蜻蜓 昆虫迁徙
2016/3/8
请让开，帝王蝶。新的远距离昆虫飞行纪录诞生了：一种长度仅有4厘米但能挥舞着翅膀飞越海洋和大陆的小蜻蜓。这个名为薄翅蜻蜓的物种（如图所示），在寻找水池产卵时可能会迁徙1.4万～1.9万公里。在昆虫当中，此前的纪录保持者——帝王蝶在每年的“旅行”中总共飞越8000公里左右的路程。北极燕鸥则创下了所有动物中飞行距离最长的纪录——每年飞行约4万公里。科学家曾怀疑蜻蜓是一个能跨越全球的单独种群的成员。而一项...
The Argentine ant is an invasive species that has become a major nuisance in California and southern states, including Georgia, South Carolina. Alabama, Mississippi, Louisiana, Florida, Tennessee and ...
Ants Were Socializing–and Sparring–Nearly 100 Million Years Ago,Rutgers Study Finds
Ants Were Socializing Sparring Rutgers Study
2016/2/23
Like people, ants have often fought over food and territory.But ants began fighting long before humans: at least 99 million years ago, according to Phillip Barden, a fossil insect expert who works in ...
Researchers Sequence Bedbug Genome,Find Unique Features
Researchers Sequence Bedbug Genome Unique Features
2016/2/23
The bed bug, Cimex lectularius, has re-established itself as a ubiquitous human ectoparasite throughout much of the world during the past two decades. This global resurgence is likely linked to increa...
International Genome Research Partnership Uncovers Bed Bug Resistance to Pesticides
International Genome Research Partnership Bed Bug Pesticides
2016/2/23
The very thought of them makes a person shudder – and scratch. Those bloodsucking bed bugs are endemic in every major city, and they’re very hard to get rid of. A massive international research partne...
Bedbug genome uncovers biology of a pest on the rebound
Bedbug genome biology of a pest the rebound
2016/2/23
Purdue University researchers participated in a multi-institute project that sequenced the genome of the common bedbug, a blood-sucking insect that has reemerged globally as a hardy pest capable of wi...
冷冻三十年，水熊虫成功复苏
冷冻三十年 水熊虫 复苏
2016/1/21
日本国家极地研究所的研究人员首次将冷冻30多年的缓步动物“水熊虫”成功复苏，这将提高人们对隐生生物体长期存活机制及条件的理解。相关研究成果发表在最新一期的《低温生物学》上。水熊虫也叫水熊，是对缓步动物门生物的俗称，有记录的约有900余种，大多是世界性分布的。它们的体型极小，最小的只有50微米，而最大的则有1.4毫米，必须用显微镜才能看清。其是地球上已知生命力最强的生物，能在冷冻、水煮、风干的状态下...
The concept that biodiversity feeds upon itself is an old idea, but it’s difficult to prove because it requires biologists to simultaneously catch several species red-handed just as they are becoming ...
One day a few years ago, while working on wasps in a rainforest in Costa Rica, entomologist Kevin J. Loope, a postdoctoral researcher at the University of California, Riverside, began reading about th...
Fire severity in southwestern Colorado unaffected by spruce beetle outbreak,CU-Boulder study finds
Fire severity southwestern Colorado unaffected by spruce beetle CU-Boulder
2015/11/12
Contrary to expectations that spruce beetle infestations increase the severity of wildfires in southwestern Colorado, a new study led by University of Colorado Boulder researchers has found that this ...
耐青蒿素疟原虫有蔓延危险 目前仅在东南亚存在但可感染非洲的蚊子
青蒿素疟原虫 蔓延危险 东南亚 感染非洲的蚊子
2015/10/29
英国《自然—通讯》杂志日前发表的一则寄生虫病学研究显示，对于青蒿素耐药的疟原虫不仅可以感染东南亚当地的几种蚊子，还可以感染一种非洲的常见蚊子。这一发现意味着，对于抗疟疾药物青蒿素的耐药性，虽然现在只在东南亚存在，但其可能会蔓延到世界其他地方。
Researchers at Case Western Reserve University have identified neurons in a cockroach’s brain that control whether the insect walks slow or fast, turns right or left or downshifts to climb.By selectiv...
东南亚耐药疟原虫可感染非洲蚊子
东南亚 耐药疟原虫 非洲蚊子
2015/10/21
近日发表于《自然—通讯》的一则研究显示，对青蒿素产生耐药性的疟原虫可感染当地的多种蚊子，同时也可以感染一种非洲常见蚊虫。这些发现意味着，对抗疟疾药物青蒿素的耐药性——虽然现在只存在于东南亚——有可能会蔓延到世界其他地方。
Tiny Dancers:Can Ballet Bugs Help Us Build Better Robots?
bio-inspired technology high-speed video mechanical engineering Robotics spider crickets
2015/11/12
When it’s time to design new robots, sometimes the best inspiration can come from Mother Nature. Take, for example, her creepy, but incredibly athletic spider crickets.Johns Hopkins engineering studen...