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hunt in Biological News

From Jack the Ripper to great white sharks

... of US-based researchers have found that sharks hunt in a highly focused fashion, just like serial ... a mathematical technique usually used to hunt serial criminals, can be used to study the ... our understanding of the ways in which predators hunt their prey." ...

Slicing chromosomes leads to new insights into cell division

... removed and the direction the chromosome moved," hunt said. "Not only did we observe a relationship, we ... movements in mitosis." To achieve this, hunt performed "nanoscale surgery," as he calls it, ... from improper chromosome segregation. Mitosis, hunt says, is one of the most important targets of ...

Key 'impact hunters' catalyze hunting among male chimpanzees

... light on how and why some animals cooperate to hunt for food, and how individual variation among ... to the hunting behavior of other animals that hunt in this way, such as dolphins and lions. This ... process. Males were not more likely to hunt for reasons of social bonding, nor was there an ...

North America's northernmost lake affected by global warming

... Pienitz reports that aquatic life in Ward hunt Lake, a body of water located on a small island ... a sediment core extracted in the center of Ward hunt Lake in August 2003. This 18 centimeter long ... of the world in Inuktitut) National Park, Ward hunt Island is completely surrounded by ice. The lake ...

Migrating squid drove evolution of sonar in whales and dolphins, researchers argue

... system that their descendents use today to hunt squids at depth." Lindberg and coauthor Nick ... have forced whales to perfect their sonar to hunt soft-bodied, migrating squid, such as the ... bats partition the tree canopy and preferentially hunt insects at specific heights. Lindberg noted ...

Geographic profiling applied to track hunting patterns of white sharks in South Africa

... competition. "The study expands our knowledge of how large predators hunt and offers a new scientific reference for studying other predator-prey ... prey with a sudden vertical rush that propels them out of the water. "They hunt solitary juvenile Cape fur seals when light levels are low, stalking them ...

Big cats, wild pigs and short-eared dogs -- oh, my!

... that provides access to otherwise isolated areas. Additionally, people hunt bushmeat to sell commercially in local markets, rather than simply for their own consumption. There is competition for food as people hunt the same prey species as the jaguar. If the prey species disappear, the ...

Intraspinal implant of mesenchymal stem cells may not heal the demyelinated spinal cord

... with axonal damage." Despite the disappointing results of this study, Dr. hunt feels that further experimentation with directly implanted MSCs is still ... capabilities in vitro, their in vivo behavior is unpredictable, said Dr. hunt and his co-authors. However, they agree that MSCs should still be ...

Despite 'peacenik' reputation, bonobos hunt and eat other primates too

... kind of image. While chimpanzee males frequently band together to hunt and kill monkeys, the more peaceful bonobos were believed to restrict what ... The researchers made the discovery that these free-loving primates also hunt and kill other primates while they were studying a bonobo population ...

Spotted hyenas can increase survival rates by hunting alone

... new light on the way spotted hyenas live together and more importantly hunt for their food alone. In a paper recently published in the journal ... societies, they also realize that venturing on their own now and then to hunt for food is often the key to their survival. "Although spotted hyenas ...

Old developmental pathways spawn revolutionary evolutionary changes

... Amdams laboratory at the Norwegian University of Life Sciences, and James hunt and others from the University of Missouri. They reveal that the Polistes ... choose to become workers or queens as adults. However, previous work by hunt and Amdam, published in Science Magazine in 2005, suggested otherwise, ...

American Chemical Society calls green chemistry bill a 'smart step'

... industry, we can move towards a more sustainable vision of the future, hunt said. In a letter to lead sponsor Gingrey, hunt praised the interagency program set up by the legislation because it would ...

Tassie tiger no match for dingo

... its big energy requirements. If the thylacine had been better able to hunt large prey, such as adult kangaroos and emus, as well as smaller species, ... enjoyed a competitive edge by having a social structure that enabled it to hunt in packs, whereas the thylacine was a lone hunter. The findings add to ...

Scary ancient spiders revealed in 3-D models, thanks to new imaging technique

... Cryptomartus hindi and Eophrynus prestvicii, closely related to modern-day spiders. The study reveals some of the physical traits that helped them to hunt for prey and evade predators. The researchers created their images by using a CT scanning device, which enabled them to take 3,000 x-rays of each ...

Research shows that 'invisible hand' guides evolution of cooperative turn-taking

... did in the previous period can explain synchronized cooperation, but cannot fully explain turn-taking. "For example, many predatory animals hunt in pairs or larger groups, and this involves synchronized cooperation. 'Tit for tat' has been shown to work very well in initiating and sustaining ...

Duke, Harvard researchers to monitor bonobo reintroduction

... closest living relative. But, despite their endangered status, bonobos are virtually unknown. Unlike chimpanzees, who are male dominated, frequently hunt and sometimes kill other chimps, bonobos are relatively peaceful. They are female-dominated and use sex to resolve social tension. Ironically, ...

Afghanistan releases its first-ever list of protected species

... it is globally endangered. Now that the snow leopard is protected under Afghan law, it is also illegal for Afghan nationals or internationals to hunt or trade the species within Afghanistan. The protected species list also comes at a critical time for Afghanistan's wild species. The ...

Komodo even more deadly than thought: Research

... where they live. The lizards are apex predators and dominate the ecosystems in which they live. Although Komodo dragons eat carrion, they also hunt and ambush prey including invertebrates, birds, and mammals. The dragon's large size and fearsome reputation has made it a popular zoo exhibit ...

Tufted bacteria cause infection in premature babies

... have been the object of increasingly intensive study, and are behind the development of the "hygiene theory". "It's thought that the past decades' hunt for disease-causing bacteria means that we now live too cleanly, which has contributed to the sharp rise in allergies and other 'luxury diseases'," ...

Poison: It's what's for dinner

... trees vanished from what is now the Mojave Desert, robbing packrats of their favorite food. Now, University of Utah biologists have narrowed the hunt for detoxification genes that let the rodents eat toxic creosote bushes that replaced juniper. "It was either eat it or move out," says biology ...

Study reveals potential to amass more carbon in eastern North American forests

... MADISON With climate change looming, the hunt for places that can soak up carbon dioxide from the atmosphere is on. Obvious "sinks" for the greenhouse gas include the oceans and the enormous ...

Desert woodrats switch one dietary poison for another

... years ago, juniper trees vanished from what is now the Mojave Desert, robbing woodrats of their favorite food. Now biologists have narrowed the hunt for detoxification genes that let the rodents eat the toxic creosote bushes that replaced junipers. "It was either eat it or move out," says ...

Desert woodrats switch one dietary poison for another

... years ago, juniper trees vanished from what is now the Mojave Desert, robbing woodrats of their favorite food. Now biologists have narrowed the hunt for detoxification genes that let the rodents eat the toxic creosote bushes that replaced junipers. "It was either eat it or move out," says ...

Study reveals potential to amass more carbon in eastern North American forests

... MADISON With climate change looming, the hunt for places that can soak up carbon dioxide from the atmosphere is on. Obvious "sinks" for the greenhouse gas include the oceans and the enormous ...

Poison: It's what's for dinner

... trees vanished from what is now the Mojave Desert, robbing packrats of their favorite food. Now, University of Utah biologists have narrowed the hunt for detoxification genes that let the rodents eat toxic creosote bushes that replaced juniper. "It was either eat it or move out," says biology ...

Bone deformities linked to inbreeding in Isle Royale wolves

... average long-term population size. Not only are fewer moose surviving, making food harder for the wolves to find, but the wolves are having to hunt older, more arthritic moose, Vucetich and Peterson found. Three years ago, the average age of a moose killed by a wolf on Isle Royale during the ...

Australia's most endangered snake might need burning

... have shown that broad-headed snakes require sunny, hot-rocks for shelter. Shaded rocks do not reach sufficiently high temperatures for the snakes to hunt their lizard prey effectively in the evenings," he said. "The trend is clear as the vegetation cover increases, the snakes' available habitat ...

Flight of the bumble (and honey) bee

... directly from one flower to an adjacent cluster of flowers in the same row of plants. The bees' flight paths have a direct affect on their ability to hunt for pollen and generate "gene flow", fertilization and seed production that results when pollen moves from one plant to another. The study of gene ...

Elephant shark genome sequence leads to discovery of color perception in deep-sea fish

... responsible for this surprising discovery. Dr. Venkatesh is a scientist at Singapore's Institute of Molecular and Cell Biology (IMCB), while Dr. hunt is based at the Institute of Ophthalmology at University College London (UCL). The research team found that the elephant shark had three cone ...

Earth's highest known microbial systems fueled by volcanic gases

... summit -- including the thin atmosphere, intense ultraviolet radiation and harsh climate -- to the physical characteristics of Mars, where the hunt for microbial life is under way by NASA. The microbial communities atop Socompa -- which straddles Argentina and Chile high in the Atacama Desert ...

Caltech researchers help unlock the secrets of gene regulatory networks

... network is ancient and tightly conserved to the base of vertebrates," she says. The fourth of the Caltech papers, by Paul W. Sternberg, the Thomas hunt Morgan Professor of Biology at Caltech and an investigator with the Howard Hughes Medical Institute (HHMI), and his colleagues, looks at a ...

CSHL scientists find a new class of small RNAs and define its function

... more like terra incognita than conquered territory. To define the full set of genomic elements that perform functions in living cells and to hunt down their location amidst the thicket of genes and non-coding DNA, a multinational project known as ENCODE (an acronym for Encyclopedia of DNA ...

Implants mimic infection to rally immune system against tumors

... to the type of tumor being targeted. The dendritic cells then report to nearby lymph nodes, where they activate the immune system's T cells to hunt down and kill tumor cells throughout the body. "Much as an immune response to a bacterium or virus generates long-term resistance to that ...

MUHC and McGill scientists explain genetic disease first discovered in Quebec 24 years ago

... University have identified a gene essential for the uptake of vitamin B12 in human cells. The discovery of this gene finally completes a 24 year-old hunt for the cause of an incredibly rare genetic disorder called, cblF combined homocystinuria and methylmalonic aciduria (cblF-Hcy-MMA), first documented ...

Goose eggs may help polar bears weather climate change

... populations" under IUCN's Red List. Polar bears' habitat rings the Arctic south of 88˚ latitude. Most of this area is sea ice from which bears hunt seals, although the breakup of sea ice over the summer forces some bears to move north, to pack ice, or onto land. More often, it is subadult males ...

Whispering bats are 100 times louder than previously thought

... well-carrying shrieks for orientation in their complex forest environment. However, tiny M. macrophyllum's lifestyle is completely different. They hunt for insects over water, scooping them up with their tail. Surlykke says that she suspected that M. macrophyllum would be louder because she couldn't ...

Researchers shed new light on catalyzed reactions

... HOUSTON -- (Nov. 19, 2008) -- Rice University scientists on the hunt for a better way to clean up the stubborn pollutant TCE have created a method that lets them watch molecules break down on the surface of a catalyst ...

New gene-silencing pathway found in plants

... whole RNA-directed silencing phenomenon." Since discovering these plant-specific RNA polymerases a few years ago, Pikaard's lab has been on a hunt to figure out what Pol IV and Pol V are making. In 2005, Pikaard and his collaborators published research showing that the major function of Pol IV ...

Study sheds new light on dolphin coordination during predation

... like baleen whales and swallow large amounts of food at once. They have to target individual fish and it's too difficult and energy-consuming to hunt solo." "It's tough to make a living in the subtropical ocean, which is something of a biological desert," she added. "They've had to adapt these ...

Researchers uncover world's oldest fossil impression of a flying insect

... senior project, Richard J. Knecht, a Tufts geology major, and Jake Benner, a paleontologist and senior lecturer in the Geology Department, set out to hunt for fossils at a location they learned of while reading a master's thesis that had been written in 1929. With chisels and hammers, the team reached ...
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