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Tag: "each" at biology news

Ants show us how to make super-highways

...crease in the amount of prey delivered to the nest each day. Professor Franks said: "I think every road user who has ever inwardly cursed as their vehicle bounced across a pothole – jarring every bone in their body – will identify with this story. When it comes to rapid road repairs, the ants have thei...

Researchers use MRI to predict recovery after spinal cord injury

...unction. An estimated 7,800 new cases of SCI occur each year. Motor vehicle accidents account for 44 percent of these injuries in the U.S. An initial MRI examination is typically performed on patients with SCI to determine the degree of neurological damage, as well as a possible prognosis. MRI findin...

HIV and malaria combine to adversely affect pregnant women and their infants

... cases of severe anaemia and 200,000 infant deaths each year. With the recent realization that HIV further aggravates pregnancy-associated malaria (PAM) there is an urgent need to understand these diseases during pregnancy and turn this knowledge into effective therapies. Until now the mechanisms by w...

Eavesdropping comes naturally to young song sparrows

.... The young birds were rotated between two rooms, each of which housed two of the adult tutors. The young sparrows, which had not begun to sing, were exposed to the tutor for four days and then rotated to the other room where they heard the songs of the other two tutors for four days. At the end of two...

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

...ajor turbulence by placing a brick downstream from each oozing source to create two turbulent wakes with one or the other flavored with food odor. This produced four separate smell targets for the sharks to locate. "In addition, we also tested the sharks under two light conditions – fluorescent and in...

First confirmed common genetic risk factors for breast cancer

...ty is conferred by a large number of genetic loci, each with a small effect on breast cancer risk. "Breast cancer likely involves many risk genes, and each gene only confers a moderate risk for disease," Dr. Liu explained. While the findings of the inte...

For many insects, winter survival is in the genes

...next step is to figure out the unique functions of each heat-shock protein. "We assume it's not simply redundancy in the system, but that each protein makes a unique contribution somehow," Denlinger said. "This protective mechanism is much mor...

Moths mimic sounds to survive

... second. He also recorded the sounds emitted from each moth, as well as the sounds made by the bats. All the bats quickly learned to avoid the noxious moths first offered to them, associating the warning sounds with bad taste. They then avoided a second sound-producing species even though it was not...

Hawaiian treasure, macadamia nuts good for the heart

... Griel. Individual calorie levels were used for each participant so that they did not gain or lose weight during the study. Both diets were matched for total fat, containing 33 percent calories from total fat. The Heart Healthy diet with macadamia nuts had 7 percent saturated fat, 18 percent monounsatu...

Pistachios lower cholesterol, provide antioxidants

...weeks. They then tested three diets for four weeks each with a two-week break between each diet. All three diets were variations on the Step I Diet, a cholesterol-lowering diet in general ...

Statin treatment improves spatial memory in mouse models of Alzheimer's

...10 mg/kg Simvastatin for seven days, while half of each group only received saline. Each day the mice had two swimming trials in the water maze, giving them a chance to learn how to reach a platform. Food was always available and safety makes taken during the entire trial. On the seventh day the animal...

Early exposure to indoor fungus molecules may protect infants against future allergies

...nt. UC researchers collected dust samples from each infant’s primary activity room and analyzed them for indoor allergens, fungal glucans and bacterial endotoxins. They also gathered information about the home, including the presence of any visible mold and water damage. Environmental and food allergy...

Hearts of male and female rainbow trout are different

...e to function properly accounts for 600,000 deaths each year. Similarly, the rainbow trout, native to the Pacific Northwest and beloved as a sport- and food fish, requires dynamic and sustained cardiac function to maintain its health and swimming activity. Previous studies of trout cardiac performance ...

'Personality-gene' makes songbirds curious

...ologists. They tested the exploratory behaviour of each bird soon after it left the nest (Early Explorator..., they quantified the reaction of the bird towards each of two unknown objects that had been put in its cage. One such novel object was a pink panther (see ...

Technique monitors thousands of molecules simultaneously

...a receptor without the need for washing by putting each member of the molecular library by an electrode that can then be used to monitor its behavior. The electrochemically addressable chips being used represent a new environment for synthetic organic chemistry, changing the way chemists and biomedical ...

'Insulator' helps silence genes in dormant herpes virus

...he virus genome. Base pairs are the nucleotides on each side of the rungs that connect the strands of the DNA ladder. "By establishing an insulator in early latency, the Herpes virus can protect this one small region of the genome from silencing, allowing infected cells to survive," says study senior a...

Chronic fatigue syndrome impairs a person's slow wave activity during sleep

... were restricted to the first four non-REM periods each night in order to show comparability, revealed tha... adults get between seven and eight hours of sleep each night to maintain good health and optimum performance. Persons who think they might have a sleep ...

US control strategies may make flu epidemics worse, UCLA study shows

...lasts only one year. Thus, individuals must decide each year whether or not to participate in a vaccinatio...nk are other people's decisions. The group modeled each individual's strategy for making yearly vaccination decisions as an adaptive process of trial and er...

Alien plants attack using 'resource conservation' as weapon, researchers say

... able to determine the resource-use efficiency for each plant. "Invasive plants were more efficient on short-time scales, but overall there was no difference in the long term," Funk said. "We were surprised that the invasive plants were not at a disadvantage under conditions where resources were scarce...

Corals -- More complex than you?

...er believes, is that coral genes may interact with each other in far less complex ways. Humans, on the other hand, are the product of a continuous and complicated dialogue between thousands of genes. Who has the best formula for long-term survival remains unclear. Today’s corals first appeared 240 mil...

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