mammals 2 10

Tag: "mammals" at biology news

Herpes infection may be symbiotic, help beat back some bacteria

...implications for immune research. Humans and other mammals have spent millions of years living and evolving with latent viral infections, Virgin notes, and the new results imply that infections may have altered our immune systems at a fundamental level. This could mean the virus-free animal models scientists...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...in session 2aAB will explore how the middle ear of mammals evolved as they made the transition from water to ...sh themselves by feeding primarily on other marine mammals such as seals, refrain from vocalizing while hunting so that prey will not be alerted to their prese...

Researchers publish first marsupial genome sequence

...ove human health." Marsupials are unique among mammals because their young are born at an extremely early...thor. Marsupials and the ancestors of placental mammals diverged 180 million years ago. By comparing the opossum and human genomes, researchers were able to...

'Insulator' helps silence genes in dormant herpes virus

...ed CTCF, a protein known to act as an insulator in mammals and in fruit flies. What's more, the findings revealed that the viral DNA binds to CTCF in the same manner as the host DNA binds to the protein. "By binding in this manner, we believed the CTCF protein was interacting with other viral proteins to...

Salk scientists hammer out a pathway that promotes muscle cell survival in mice

...issue types and in other species." Indeed, all mammals have SIK1, not just mice, and even worms and fruit flies use variations of the enzyme. And as Montminy adds, "Application of this same pathway over and over across species further emphasizes its importance."...

Ice Age extinction claimed highly carnivorous Alaskan wolves

The extinction of many large mammals at the end of the Ice Age may have packed an even bigger punch than scientists have realized. To the list of victims such as woolly mammoths and saber-toothed cats, a Smithsonian-led team of scientists has added one more: a highly carnivorous form of...

The mouflons of the Kerguelen archipelago

... in Paris. He studied the ecology and behaviour of mammals (mouflons, sheep and reindeer) introduced into the Islands. Ten years later, Renaud Kaeuffer, a doctoral student in biology at UQAM, supervised jointly by Denis Réale and Dominique Pontier of the Université Claude Bernard Lyon I in France, went to...

Reconstructing the biology of extinct species: A new approach

...included 119 additional species, most of which are mammals ranging in size from mouse to elephant, that habitually move in diverse ways in varied environments. The project is the first large-scale study to document the relationship of the dimensions of the semicircular canals to locomotion. These structu...

Research finds that circadian rhythms dominate all life functions

...University shows that the function of all genes in mammals is based on circadian -- or daily -- rhythms. The ...e oscillation is significantly more organized when mammals are exposed to regular periods of day and night. Oscillation can become chaotic in states of consist...

Massive herds of animals found to still exist in Southern Sudan

...his could represent the biggest migration of large mammals on earth.” Fay, Elkan and Marjan also report an estimated 8,000 elephants, with concentrations mainly in the Sudd, the largest freshwater wetland in Africa. They also found evidence of even larger numbers of elephants in Boma and in the Jonglei lan...

Hormone helps mice 'hibernate,' survive starvation

..., promoting survival during foodless periods. Some mammals also enter a hibernation-like state of regulated hypothermia, known as torpor, which conserves energy. The molecular driver behind this reaction to starvation, however, had been unknown. To find an answer, UT Southwestern researchers and other ...

St. Jude study solves mystery of mammalian ears

...pecialized cells in the inner ear amplify sound in mammals appears to have been settled more in favor of boun...ing could explain why dogs, cats, humans and other mammals have such sensitive hearing and the ability to discriminate among frequencies. The work also highlig...

1 2 3 4 5 6 7 8 9 10