Tag: "wolf" at biology news
Presence of wolves allows aspen recovery in Yellowstone
...al Park dates to the extirpation of the last known wolf
packs in the 1920s. Prior to the re-introduction of wolves, scientists found there were many small sprouting shoots of these important tree species, and numbers of large trees 70 years old or more but practically nothing in between. High populations...
Glimmer of hope for Tahitian tree snails' survival
...following the introduction of the carnivorous rosy wolf
snail, he said. The predatory intruder was meant t...me something of an agricultural pest, and the rosy wolf
snail was brought in. As a consequence, Tahitis tree snail populations have been almost completely w...
Specialized, bone-crushing wolves of Alaska disappeared long ago
...n North America today. Regardless, the living gray wolf
differs dramatically from that which roamed Alaska just 12,000 years ago. The gray wolf
is one of the few large predators that survived the mass extinction of the late Pleistocene. Neverth...
Ice Age extinction claimed highly carnivorous Alaskan wolves
...s has added one more: a highly carnivorous form of wolf
that lived in Alaska, north of the ice sheets. ...nscathed. But this previously unrecognized type of wolf
appears to have vanished without a trace some 12,000 years ago. The study, which will be published...
Researchers identify gene involved in dog size
...ludes domestic dogs diverged from that of the gray wolf
more than 15,000 years ago. Due to selective breeding by humans throughout history, dogs today exhibit an extremely wide range of body types and behaviors. In fact, dogs exhibit the greatest diversity in body size of any mammalian species. In their...
Why small dogs are small
...en they were first domesticated, or it was a small wolf
that dogs descended from. The small dog haplotype ...s to make dogs small arose either because "a small wolf
couldnt survive in nature, but it could survive in company with humans" or because an early human "w...
Over a century after disappearing, wild elk return to Ontario
... long after being transferred, particularly due to wolf
predation, illegal hunting and stress from the transfer process. However, the death rate is decreasing each year, suggesting that the animals are adapting to their new home. Although pleased with the programs success to date, Rosatte asserts that t...
Ground spider diversity studied in research project
...two years. The most common were several species of wolf
spiders, she said. A total of 989 species of spiders have been identified in Texas; 280 of these are found in Brazos County. Henderson set out pitfall traps made of plastic cups, funnels and animal-safe antifreeze to collect the spiders. A variet...
Wolves are suffering less from inbreeding than expected
... threat against the viabi lity of the Scandinavian wolf
population. A study just coming out in the new jou...ults show that it is the most genetically variable wolf
individuals that are recruited into the breeding population. An important consequence of this action...
Listening to gunshots may save lives and wildlands
...a into useable chunks: elk bugles, aircraft noise, wolf
howls, gunshots, etc. "Take frogs for example," Maher said. "Frogs are very sensitive to environmental changes. You might be able to augment temperature, moisture and other environmental data with 24/7 recordings of frog vocalizations to estimate p...
USGS at The Wildlife Society: From sea-ice change to contaminants to predators and prey
...24, 3:50-4:10 p.m. Elk calf mortality following wolf
restoration in Yellowstone National Park: With wolves having been restored to Yellowstone National Park, many people believed that these newcomers would be the main source of mortality for newborn elk calves. True, elk form the main part of the wo...
Contagious cancer in dogs confirmed; origins traced to wolves centuries ago
...ic cancer arose at least 200 years ago in either a wolf
or a closely related ancient dog breed. That makes the tumors the oldest cancer known to science, and possibly the longest continually propagated mammalian cell lineage in the world. "Our results, based on several independent genetic markers in tum...
UGA study reveals a new way of looking at vaccine development
...uman cells do the bacteriological equivalent of a wolf
in sheep's clothing so that the body is slow to mount a strong immune response. Once an accurate model of its sugar chains is created, those chains could potentially be altered in a way that allows the body to recognize it. Of course, researchers c...
Killing wolves may not protect livestock efficiently
...rm, regional scale, according to an examination of wolf
control methods in Alberta and several U.S. states...study were presented today at an annual meeting of wolf
scientists, ranchers and wildlife managers near Yellowstone National Park. Lead author Dr. Marco Mus...
Bacterial protein mimics host to cripple defenses
Like a wolf
in sheep's clothing, a protein from a disease-causing bacterium slips into plant cells and imitates a key host protein in order to cripple the plant's defenses. This discovery, reported in this week's Science Express by researchers at the Boyce Thomp...
Researchers publish dog genome sequence
...d other related canine species, including the gray wolf
and coyote. In this sampling, they pinpointed tiny spots of genetic variation, called single nucleotide polymorphisms (SNPs), which serve as recognizable signposts that can be used to locate the causes of genetic disease. "Of the more than 5,500 mamm...
Dog genome sequence and analysis published in Nature
...d other related canine species, including the gray wolf
and coyote. By comparing these dogs, they pinpointed ~2.5 million individual genetic differences among breeds, called single nucleotide polymorphisms (SNPs), which serve as recognizable signposts that can be used to locate the genetic contributions t...
Removing egg from nest may help save endangered whooping crane
... siblicide or is killed by a predator, such as the wolf
or fox. The egg-removal program was initiated years ago by Ernie Kuyt, an Edmonton-based scientist who reasoned that one egg could be taken and used for artificial propagation programs. The idea was so successful, says Boyce, that the whooping crane'...
Otter adaptations: How do otters remain sleek and warm
...es to Yellowstone National Park.) Weisel examined wolf
prey hair with light and electron microscopy with the idea of accurately identifying wolf
diet from wolf
scat. "While we have engaged molecular biologists in studies of animal genetics and i...
Wolves' top-down effect
...ow researchers were able to examine the effects of wolf
exclusion on elk--wolves' preferred prey--on plants such as willow, which are favored by the ungulates, and on other species that depend on the willow habitat. Hebblewhite and his colleagues found that in the low-wolf area of Bow Valley elk populat...