搜索结果: 211-225 共查到“国际动态 动物学”相关记录1160条 . 查询时间(1.875 秒)
Most of the frogs alive today owe a big thank you to the asteroid or comet that delivered the coup de grace to the dinosaurs.A new study by Chinese and American biologists shows that if the ...
Leaping Lizards!
Leaping Lizards
2017/7/24
Many geckos inhabit trees, often living high in the canopy. Relying on their incredible adhesive strength to help them break their fall, they jump from trees, and land on either leaves or relatively s...
Woodrats can't stomach favorite foods at high temps
Woodrats can't stomach favorite foods high temps
2017/7/24
You’d think desert woodrats already had a lot of adversity. Besides the constant threat of coyotes and other predators and the scorching Mojave Desert heat, their primary source of food is the creosot...
Mountain lions fear humans,fleeing when they hear our voices,new study reveals
Mountain lions fear humans they hear our voices
2017/7/24
"Fraidy cat" isn't the way most people think of mountain lions, but when it comes to encounters with humans, perhaps they should.New research into the behavior of these big cats indicates that they do...
African leopards revealed:Study documents minute-to-minute behavior of elusive cats
African leopards documents minute-to-minute behavior elusive cats
2017/7/24
The elusive behavior of the African leopard has been revealed in great detail for the first time as part of a sophisticated study that links the majestic cat's caloric demands and its drive to kill.A ...
Is It Sometimes OK To Cheat?
Sometimes OK To Cheat
2017/7/24
When both partners benefit from a relationship—be they husband and wife or pollinator and flower—the relationship is known as a mutualism. But sometimes partners do not deliver their side of the barga...
Promiscuous salamander found to use genes from three partners equally
Promiscuous salamander genes three partners equally
2017/7/21
A promiscuous salamander has found a simple genetic formula for success: Mate with multiple males and use equal parts of each partner’s genetic material in her offspring.A University of Iowa–led team ...
Imagine if a dense thicket didn’t obstruct your path but instead picked you up and shuttled you through the forest. That’s what tightly packed DNA might be doing with important life molecules to get t...
Researchers Find Glass Eels Use Internal Compass to Find Their Way Home
Researchers Glass Eels Internal Compass Find Their Way Home
2017/7/21
Scientists are closer to unraveling the long-standing mystery of how tiny glass eel larvae, which begin their lives as hatchlings in the Sargasso Sea, know when and where to "hop off" the Gulf Stream ...
In Sex-Changing Fish,Male-Typical Sexual Behavior Associated With Elevated Expression Of Male Sex Hormone Receptors In Muscles
Sex-Changing Fish Male-Typical Sexual Behavior Male Sex Hormone Receptors Muscles
2017/7/21
Sex-changing fish exhibit differences in androgen receptor (AR) expression in muscles that are highly sensitive to androgens (male sex hormones) and essential for male courtship behavior, according to...
Can You Hear Me Now?
You Hear Me
2017/7/21
When trying to be heard over noise, humans and animals raise their voices. It’s a split-second feat, from ear to brain to vocalization, and Johns Hopkins University researchers are the first to measur...
How often does research reveal not only how dinosaurs could have moved in the past, but how robots might move in the future?If a Pacific parrotlet (Forpus coelestis) needs to get to a nearby...
Female vampire bats form strong social bonds with their mothers and daughters as they groom and share regurgitated meals of blood. They also form friendships with less closely related bats. Gerry Cart...
Lizards may be overwhelmed by fire ants and social stress combined
Lizards overwhelmed fire ants social stress
2017/7/20
Lizards living in fire-ant-invaded areas are stressed. However, a team of biologists found that the lizards did not exhibit this stress as expected after extended fire ant exposure in socially stressf...
Imagine living in perpetual darkness in an alien world where you have to find food quickly by feel or starve for months at a time.The limestone caverns of Mexico’s Sierra del Abra Tanchipa rainforest ...