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Tag: "adapt" at biology news

Math that powers spam filters used to understand how brain learns to move our muscles

...on about its mistakes in a memory bank so it could adapt and make more accurate predictions the next time around. Every time the learner repeated the task, it would sift through the prior knowledge in its memory banks and make a prediction on how to move, which in turn would also be memorized. While short ...

Puzzling plankton yield secrets to role in evolution/global photosynthesis

...nes can account for changes in the cell surface to adapt to different ecological niches." Grigoriev and his colleagues noted the abundance of selenium-rich proteins that surfaced in their analysis, which he said allows the organisms to horde nutrients and reduced their appetite for iron—an adaptive proces...

Amphibians in losing race with environmental change

...aints of evolution and the inability of species to adapt quickly enough can explain most of the causes that...ompromises, and does not always allow a species to adapt in a way that meets rapidly changing conditions. Through genetic variation and natural selection pre...

Healthy coral reefs hit hard by warmer temperatures

.... Can corals and other marine species successfully adapt or evolve, when faced with such change?" Rice said. Understanding the causes of disease outbreaks will help ecologists protect reef-building corals, which support commercial marine species and buffer low-lying coastal areas. "More diseases are ...

DNA-damage test could aid drug development

...octoral researcher Jing Zhang in the Lodish lab to adapt techniques from an established cell-culture system based on mouse fetal liver cells to create a new system based on adult red cell precursors from mouse bone marrow. Shuga patiently optimized the system, which allows the precursor cells to proliferat...

Asexual worm quickly adapts to soil contamination

... species have low adaptive potential and that they adapt to stress less easily than sexual species. At present these asexual species are used as test organisms in ecotoxicological risk evaluations. The question now arises as to whether they are suitable for this purpose. The results of this study are i...

Herpes infection may be symbiotic, help beat back some bacteria

...of years that mammalian immune systems have had to adapt to these viruses—perhaps these results are not as surprising as they might seem at first." ...

Scientists discover new life in the Antarctic deep sea

...e evolution of the marine species and how they can adapt to changes in climate and environments." Dr Katrin Linse, marine biologist from British Antarctic Survey, says, "What was once thought to be a featureless abyss is in fact a dynamic, variable and biologically rich environment. Finding this e...

Revealing the machinery underlying the 'plastic' juvenile brain

...young brain enable it to so adeptly wire itself to adapt to experience—a quality known as plasticity. The extraordinary plasticity of the young brain occurs only during a narrow window of time known as the critical period. For example, children deprived of normal visual stimulation during an early critical...

NIAID expands capability for influenza research and surveillance

...with people; understanding how flu viruses evolve, adapt and transmit infection; and identifying immunologi...conduct studies to determine how influenza viruses adapt to new hosts and are transmitted between different hosts, and analyze human immune responses to infl...

New success in engineering plant oils

...fatty acids plays a key role in plants' ability to adapt to different climates, but to change this ratio specifically in seed oils without changing the climate is an interesting challenge," remarked Shanklin. "Our group sought to gain a better understanding of the enzymes and metabolic pathways that produc...

Farmed salmon could become an invasive species in forest streams

...native fishes. Escaped salmon may eventually adapt to local conditions, leading to self-sustaining populations. Escaped salmon could compete with already at-risk species, such as steelhead. "Given the precarious state of many of our native salmon stocks," explains Bisson, "it seems prudent...

Scientists find hormone activity explains adolescent mood swings

...he adult, this stress hormone helps the individual adapt to stress, with a calming effect produced half an hour after the event. Specifically, the GABA-A receptor is the target for steroids, such as THP (or allopregnanolone), which reduce anxiety. GABA-A receptors calm activity in the brain. As such, t...

New protein inhibitor impedes growth of cancerous cells

...cells are typically fast growing and can mutate to adapt to new growth conditions, effective drug-based therapies will likely succeed in part by impeding multiple functions required for cell division and survival. One particular class of proteins, known as kinases, is known to play especially critical role...

Climate change could trigger 'boom and bust' population cycles leading to extinction

...ic diversity of a species, lowering its ability to adapt and making it more prone to extinction. ...

Protein discovery targets antibiotic-resistant bacteria

...block the sensory pathway, then the bacteria can’t adapt to that change in their environment, and won’t be able to infect,?says Dr. Martin. In North America, the people treated for food poisoning with drugs tend to be elderly or “immune compromised?where there is a need for antibiotics to clear the infe...

Rewarding fat rats

...rams and robots that can learn from experience and adapt their behaviour to a complex, constantly changing environment. We can expect that this technology will be greatly improved in the near future." ...

Birth rate, competition are major players in hominid extinctions

...2 to 16,000 years ago. "Why did Neandertal not adapt culturally?" she asks. "Why did they not start eating bunnies? They did begin fishing." Jablonski believes that competition from modern humans was already too strong. The environment was marginal and modern humans were already foraging and smal...

No sex for 40 million years? No problem

...ising scientists ?and their ability to survive and adapt to change certainly raises interesting questions about our understanding of evolutionary processes." ...

Conceptualizing a cyborg

...ch as temperature or pressure provides feedback to adapt the movements. The central feature of the proposed interface is the ability to create transplantable living nervous tissue already coupled to electrodes. Like an extension cord, of sorts, the non-electrode end of the lab-grown nervous tissue cou...

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