Tag: "mammal" at biology news
Sugar-coated sea urchin eggs could have sweet implications for human fertility
...sidade Federal do Rio de Janeiro in Brazil. While mammal
eggs mouse and human, for instance don't have a thick jelly coating like sea urchin eggs, they do have complex carbohydrate molecules on the surface. It is likely, Biermann said, that those sugars attach to proteins in sperm cells to trigger reprod...
Endangered species list more bleak than originally thought
... found is that with the extinction of a bird, or a mammal
or a plant, you aren't just necessarily wiping out just one, single species," said Dr. Heather Proctor from the U of A's Department of Biological Sciences. "We're also allowing all these unsung dependent species to be wiped out as well." Proctor and ...
Do genes respond to global warming?
...es variation in genetic diversity. Focusing on two mammal
species--the Montane vole and northern pocket goph...ittle Ice Age--that had different effects on local mammal
populations depending on their habitat preferences. Habitat specialists, the vole and pocket gopher ...
Nevada researcher re-ignites mammal reproduction debate
... the University of Nevada, Reno. Elissa Cameron, a mammal
ecologist in the Department of Natural Resources a...ffspring leads to greater evolutionary success for mammal
parents, if living conditions support larger populations. Should conditions be less desirable, havin...
Counting foxes before the last tally-ho
...ort." Foxes emerged as the nation's favourite land mammal
in an NOP poll conducted in 2000. It has been estimated that between 20,000 and 25,000 foxes are killed by hunting with dogs in Britain every year, with some 100,000 dying on our roads....
Manatee population rising in some regions, likely stalled or declining in others
...l method is applicable to a large number of marine mammal
Bone, enamel, dentine, milk & saliva share gene family
Fish and mammal
teeth are not created equal. Sometime after the move from spineless to having a backbone, the family of genes that controls tissue mineralization evolved to produce mammalian tooth enamel, bones and dentine, but fish enameloid developed from differe...
Research reveals role of gene in infertility
...repair breaks in their DNA in a different way from mammal
cells, which just stop growing if the RAD51 gene is not functioning," Ma says. Meiosis produces the cells of sexual reproduction, such as sperm cells and egg cells, which contain only a single strand of each of the organism's characteristic number ...
'Extinct' bird rediscovered in Mexico
...species, and at least three endemic and threatened mammal
species. The team will next try to determine the size and range of the population represented by this single bird, and then return next January, when the birds are known to sing more frequently, to attempt further surveys. To protect this and potenti...
A fly's taste experience is much like our own
...e. Though no one has mapped the taste areas inside mammal
or human brains, other senses typically are mapped in the brain by location or quality, but not both. Odors, for example, are perceived by the brain according to what, not where, they are. Touch, on the other hand, is mapped to the brain according to...
Laos camera traps capture tigers
...identified by unique stripe patterns--and 30 other mammal
species. "Such a diversity of species, including 19 species of carnivores, means that Nam Et Phou Louey Protected Area remains an important area for tiger conservation in Southeast Asia," said Dr. Joshua Ginsberg, director of WCS's Asia Program....
Four tourist destinations named best worldwide
...esert on camels, observe some of the 33 indigenous mammal
and reptile species (including the threatened Arabian oryx), and enjoy excellent desert bird watching. The winner of the Heritage Tourism Award, given to a company for making outstanding contributions to cultural heritage, is Anangu Tours, ow...
Utah scientist helps discover new mouse species -- and maybe a new genus
...oly site by some Filipino sects, for unusual small mammal
species. According to Danilo Balete, a biologis...on and they are not clear yet as to what genus the mammal
belongs. It may represent a new genus, the taxonomic level above species. The single specimen, which...
SEEDS program sponsors field trip to Calgary
... the Barrier Lake Field Station will include small mammal
population studies, forest ecology, fish ecology, glacier ecology, and bats in addition to a greeting from the Nakoda First Nation. Research highlights of the R.B. Miller Station will include large mammal/Bighorn Sheep behavior in addition to an eve...
Researchers establish first molecular link between eating and aging
...y life in a single protein that controls whether a mammal
stores fat or sheds it. The work could lead to dr...malian gene promotes fat mobilization in mice. A mammal
generally burns the protein and carbohydrates in its food immediately; it stores fat in special cell...
New mouse species found in the Philippines
...oly site by some Filipino sects, for unusual small mammal
species. According to Danilo Balete, a b...on and they are not clear yet as to what genus the mammal
belongs. It may represent a new genus, the taxonomic level above species. The single specimen, whic...
Artificial light-dark cycles expose circadian clocks at odds with each other
...hat there are at least two circadian clocks in the mammal
brain, one that sticks strictly to an internal schedule and another that can be altered by external influences such as light and dark. Typically the two clocks are synchronized so that various physical functions are in tune with each other, said Hor...
Whales, seals or men? Who stole all the fish?
...rine mammals, she found, and 99 per cent of marine mammal
feeding takes place where very little fishing occu...icts. She found substantial overlap between marine mammal
consumption and fisheries in a few places, such as near Iceland, in the Bering Sea, and in the Yello...
Yellowstone's long-distance travelers in trouble, study says
...d-trip of 340-miles the longest of any land-based mammal
from Argentina to Toronto. Its current winter migration route consist is a perilous network of narrow mountain passes to 100-yard-wide strips along highways. Carbon dating by archeologists shows that some of these routes have been used for 5,800-7,...
More than 300 critically endangered species completely unprotected, new study shows
... tortoise species were included. MAMMALS: Of 4,735 mammal
species analyzed for this study, 258 are "gap species," meaning that they have no protection over any part of their ranges. Of those, 149 are threatened. CR mammals currently unprotected include one of the world's rarest fruit bats, the Comoro black ...
1 2 3 4 5 6 7