Tag: "hunting" at biology news

Learning to evolve: With a little help from my ancestors

...ow complex motor skills, such as nest building and hunting skills, are acquired by a combination of innate ability and learning over many generations. The new theory has its roots in ideas proposed by James Baldwin in 1896, who made the counter-intuitive argument that learning within each generation could ...

Zebrafish: It's not your parents' lab rat

... a dollar at the pet store. They grow from eggs to hunting their own food in three days. Adults can lay up to 500 eggs at once and you have more in common with them than you think. "For all their differences, humans and zebrafish aren't that dissimilar," said Rice University zebrafish expert Mary Ellen Lan...

Humboldt squid on the move

...roductive continental-shelf areas, their adaptable hunting strategies allow them to prey upon commercially important fishery species like hake and anchovy." In fact, Robison's survey data showed that within a month after populations of Humboldt squid increased in Monterey Bay, the number of hake dropped dram...

Clues to future evolution of HIV come from African green monkeys

...when people had contact with chimpanzee blood from hunting and butchering the animals, Worobey said. The team's research article, "A Challenge to the Ancient Origin of SIVagm Based on African Green Monkey Mitochondrial Genomes," is in the July issue of PLoS Pathogens and can be found at http://www.plospat...

Neutral evolution has helped shape our genome

...disorder of substantial interest to the lab. While hunting for new genes, they found portions of DNA that had been copied from the mitochondria, the energy-making apparatus of human cells that has its own small genome. These mitochondrial sequences are known as numts. When they expanded their study across ...

Wolves of Alaska became extinct 12,000 years ago, scientists report

...rey disappeared due to factors that included human hunting and dramatic global warming at the end of the Pleistocene, Van Valkenburgh said. Prior to the new research, it was not known whether todays gray wolves in Alaska and elsewhere descended from ancient gray wolves that roamed those areas in the Pleist...

Scientists find endangered grey-shanked doucs in Vietnam

...cates that the population has not been impacted by hunting like all other known populations of the species. ...s in Vietnam, they face an uncertain future due to hunting and habitat loss. A 2006 IUCN assessment determined that 65 percent of Vietnams primate taxa are End...

Critical protein prevents DNA damage from persisting through generations

... B lymphocytes -- the immune cells responsible for hunting down foreign invaders and labeling them for destruction -- they rearrange their DNA to create various surface receptors that can accurately identify different intruders, a process called V(D)J recombination. Now, in an study published online today in...

Frog molecule could provide drug treatment for brain tumors

...troying cancer cells. It is highly specific at hunting and destroying tumour cells, is easily synthesised in the laboratory and offers great hope as a therapeutic treatment of the future. Amphinase is a version of a ribonuclease enzyme that has been isolated from the oocytes (egg cells) of the Northern...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...ntroversial. It has been variously blamed on human hunting or climate change, or on a combination of factors as the Ice Age waned. For the specialized Alaskan wolves, the story is perhaps less complicated. When their prey disappeared, these wolves did as well, Leonard said. But the results of this study a...

The mouflons of the Kerguelen archipelago

...intered there. We got the missing DNA samples from hunting trophies and managed to go all the way back to the son of the founders, said Denis Rale with a smile. We were even able to obtain genetic material from the population of origin from the Vincennes Zoo. We took the DNA from these samples, and looked at...

Researchers find 24 species believed new to science in Suriname rainforest

...ent of the region to address and halt threats from hunting and small-scale illegal mining. The report suggests that strategies should focus on protecting freshwater streams and preventing fragmentation of the natural habitat from unchecked or poorly planned development. The Guayana Shield region contains t...

New research shows sharks use their noses and bodies to locate smells

...d Atema. "Since dogfish feed primarily in the dark hunting for crabs, lobsters, shrimp and small fish, their reliance on information from their lateral line is essential. The results are interesting for our understanding of animal navigation under water and for the development of guidance of autonomous under...

Reproductive speed protects large animals from being hunted to extinction

...icant risks for extinction of a species, but under hunting pressure it's reproductive speed that really matte...as nearly wiped out in just a few years of intense hunting pressure with relatively slight habitat change while the white-tailed deer continues to grow in numb...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...G KILLER WHALES IN THE ACT Catching killer whales hunting their prey has been difficult, in part because the...mmals such as seals, refrain from vocalizing while hunting so that prey will not be alerted to their presence. When they begin feeding, they become more vocal...

Vaccine prevents prion disease in mice

...ould need a vaccine like this to protect people in hunting areas." He also noted that a vaccine that decreases the spread of prion disease in animals also reduces the possibility that the disease could infect humans. ...

Scientists find new agent to fight genetic disorders -- Zorro-Locked Nucleic Acid

...-hunters Holy Grail for which scientists have been hunting for many years. Zorro-LNA should give us a new, safe way of blocking the effects of errors in our genetic repertoire."...

Why small dogs are small

...eople bred dogs to be large for use as guard dogs, hunting dogs, and war dogs (like mastiffs) and even to pull carts, Lark says. How it Started: A Dog Named Georgie The study has its roots in the death of Larks beloved dog Georgie. Lark, whose earlier work focused on soybean genetics, adopted Georgi...

Forest elephants at risk from the illegal ivory trade

...ans (machete cuts, shotgun cartridges, snares, and hunting camps), to collect data on the abundance, distribution, and illegal killing of forest elephants (indicated by carcasses found with telltale signs such as gunshot holes in the skull and removed tusks, or by elephant meat on smoking racks in active cam...

Elephant highways of death

...g and mining companies must work to reduce illegal hunting in their concession areas, especially those near protected areas. In African savannahs, both elephant populations and illegal killing can often be monitored through aerial surveys, whereas elephant massacres in the depths of the forest can remain u...

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(Date:10/31/2014)... New Haven, Conn. – Geologists are letting the air out ... on Earth. , Scientists have long speculated as to why ... Earth,s surface. Animals began to prosper at the end of ... what about the billion-year stretch before that, when most researchers ... seems the air wasn,t so great then, after all. , ...
(Date:10/31/2014)... good for attracting species, but it may not be enough ... study has found. , The researchers surveyed two types of ... abundance of two insects that interact with them. They found ... and black walnut, they didn,t find a corresponding abundance of ... the walnuts and black cherries and a type of wasp ...
(Date:10/31/2014)... Melbourne researchers have uncovered key steps involved in programmed ... diseases including lupus, cancers and neurodegenerative diseases. , ... Institute worked together to discover the three-dimensional structure of ... the first steps in how it causes cell death. ... and Proceedings of the National ...
Breaking Biology News(10 mins):Lack of oxygen delayed the rise of animals on Earth 2Green spaces don't ensure biodiversity in urban areas 2A matter of life and death: Cell death proteins key to fighting disease 2
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