搜索结果: 301-315 共查到“国际动态 动物学”相关记录1160条 . 查询时间(1.328 秒)
Proton-conducting material found in electrosensory organs of sharks
Proton-conducting material electrosensory organs sharks
2016/5/19
Sharks, skates, and rays can detect very weak electric fields produced by prey and other animals using an array of unusual organs known as the ampullae of Lorenzini. Exactly how these electrosensory o...
In the scientific world, Drosophila is anything but humble; instead, it serves as a model organism of powerhouse proportions. For over a century, scientists have usedDrosophila to revea...
Scientists crack secrets of the monarch butterfly’s internal compass
Scientists monarch butterfly internal compass
2016/4/25
ach fall, monarch butterflies across Canada and the United States turn their orange, black and white-mottled wings toward the Rio Grande and migrate over 2,000 miles to the relative warmth of cen...
Some populations of frogs are rapidly adapting to a fungal pathogen called Batrachochrytrium dendrobatridis (Bd) that has decimated many populations for close to half a century and causes the disease ...
The bearcat. The binturong. Whatever you call this shy, shaggy-haired creature from Southeast Asia, many people who have met one notice the same thing: it smells like a movie theater snack bar.M...
Sea slug brain chemistry reveals a lot about human memory,learning
Sea slug brain chemistry human memory learning
2016/4/13
As you can imagine, life is not very complicated for sea slugs. They use their brains mainly to find food, avoid becoming food and to reproduce. While the human brain and nervous system are wired with...
ASU studies are first time an anticipatory mechanism has been found in social organisms
ASU anticipatory mechanism social organisms
2016/4/13
Keeping honeybees healthy is critical to the world’s food supply.A lack of adequate nutrition for bees is blamed as one of many possible causes for colony collapse disorder — a mysterious syndrome tha...
飞得远的鸟或许更聪明
鸟类 迁徙
2016/3/21
人人都想知道，怎样才能使自己更聪明。一国际研究小组最近在《科学报告》杂志上发表的一篇关于鸟类迁徙对其大脑影响的论文或许会给出答案。该研究论文称，鸟类迁徙距离越远，其大脑中负责导航区域的神经元细胞增加得越多。
美国研究人员发现受精卵硬度显示了生存能力的强弱
受精卵硬度 生存能力
2016/3/4
选择健康的体外受精胚胎植入母体，事关胚胎成活率和受孕率。美国研究人员发现，受精卵的软硬程度显示了生存能力的强弱，据此开发的常规筛选方法准确率更高，这使得筛选体外受精胚胎如同用捏一捏的方法挑选水果一样简单。
揭示哺乳动物心脏再生分子机制
国际知名学术期刊 心脏再生分子 心肌细胞
2022/3/24
国际知名学术期刊《发育学》日前在线发表了中国科学院上海生命科学研究院营养科学研究所周斌课题组的研究论文。该研究利用心脏特异性基因敲除和基因过表达技术，揭示了转录因子GATA4通过调节一个在心脏中特异表达的分泌型因子FGF16，来维持心脏的修复能力，并对损伤后引起的心肌肥厚起到一定的抑制作用。这项工作为心肌损伤修复和病理性心肌肥大的临床治疗提供了理论基础。
Rare beluga data show whales dive to maximize meals
beluga data show whales dive maximize meals
2016/2/23
Children’s singer and songwriter Raffi may have brought beluga whales into popular culture with his 1980 song “Baby Beluga,” but surprisingly little is actually known about the life and ecology of the...
A recent study provides new evidence that larvae swim faster, straighter and more consistently in a common direction when together in a group. The research led by scientists at the University of Miami...
Lightly brush your fingertips across your keyboard. What do you feel? The smoothness of plastic? Ridges, gaps, maybe a sticky key? Bumps on the F and J keys? The human fingertip is a finely tuned sens...
Genetic mechanism found for fish adaptations to pollution
Genetic mechanism fish pollution
2016/2/23
A Washington State University biologist has found the genetic mechanism that lets a fish live in toxic, acidic water. The discovery opens new insights into the functioning of other “extremophiles” and...
Feeding birds in your local park?If they're white ibises in Florida,think twice
Feeding birds local park ibises Florida
2016/2/23
The following is part 17 in a series on the NSF-NIH-USDA Ecology and Evolution of Infectious Diseases (EEID) Program. See parts: one, two, three, four, five, six, se...