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Tag: "mortality" at biology news

New study: Preterm birth causes one-third of all infant deaths

...venting preterm birth can play in improving infant mortality in the United States." The U.S. infant mortality rate has declined since 1995 except between 2001 and 2002, when the rate increased for the first tim...

Fish growth changes enhanced by climate change

...with a variety of life history traits ?from higher mortality to reduced food availability and increased age or smaller size at sexual maturity. He said comparisons of historical and modern oceanographic data indicate temperature trends very similar to the apparent changes in growth rates. In the south west...

E. coli bacteria migrating between humans, chimps in Ugandan park

...cabies and a polio-like virus have caused epidemic mortality in chimpanzees in some African locales. ...

Scientists identify specific enzymes that make meningitis hard to fight

... Both are extremely serious conditions with a high mortality rate, which take hold quickly and are difficult to treat - sometimes resulting in extreme measures such as limb amputation. When the meningitis bacteria enter the bloodstream, the body's natural defences send white blood cells to fight the infect...

Over a century after disappearing, wild elk return to Ontario

...hough the transferred elk experienced a 41 percent mortality rate between 1998-2004, the majority of surviving elk were able to reproduce. According to the program’s 2004 data, 375 to 440 elk are currently living in Ontario. Dr. Rosatte is quick to point out that the program faced many challenges. Many of ...

Salamanders suffer delayed effects of common herbicide

...he two highest concentrations increased salamander mortality during exposure. However, this mortality benefited the survivors who experienced lower competition-related mortality after metamorphosis. ...

Bacteria research offers hope for new vaccine against meningococci

...er of weeks in the late 1990s. Without treatment, mortality among those who contract the disease is 85-90 percent, with treatment some 10-15 percent. Patients also run a high risk of serious disability after recovery. Only humans are susceptible to infection from meningococci. In its modeling system Ann-Be...

Experimental vaccine given during pregnancy reduces stillbirths from common virus

...0 litters) produced 28 live pups and 4 dead pups—a mortality rate of 13 percent. The control group (8 litters)...r the flu, produced 9 live pups and 12 dead pups—a mortality rate of 57 percent. The surviving pups weighed more than the pups of mothers that had not receive...

How to manage forests in hurricane impact zones

...ire monitoring for up to 5 years to detect delayed mortality or the onset of insect infestations or diseases," says Stanturf. "Beyond the initial flurry of cleanup and salvage logging, the recovery process will take many years, and require the investment of time and resources. The recovery period is a good tim...

Long-lived deep-sea fishes imperiled by technology, overfishing

...l can influence shallow-water fishes' breeding and mortality rates, but deep-sea environments are usually stable. The deep sea is almost completely dark, very near freezing and has very little food ?reasons for the fishes' slow growth and low productivity. "Old fish don't necessarily need to breed every yea...

Eating less salt could prevent cardiovascular disease

...10-15 years post-trial. There was also a 20% lower mortality rate. This risk reduction was evident in each trial. To the authors knowledge this study is the first and only study of sufficient size and duration to assess the effects of a low salt diet on cardiovascular problems based on randomised trial data...

Some caterpillers just don't want to grow up

...ts out. The scientists conclude that low added mortality and intense competition among caterpillars in the nest are a prerequisite for the evolution of delayed development, but cannot explain it on their own. In contrast, sibling competition and "segregation" ?cohorts from both years do not always compete ...

Elderly spinal cord injuries increase five-fold in 30 years, Jefferson neurosurgeons find

...ty, one of the study's primary investigators. "The mortality of these patients is much greater than younger pat...hat these older patients have an increased risk of mortality due to their concurrent medical illnesses, as well as their limited ability to overcome traumatic in...

Ethanol vehicles pose a significant risk to human health, study finds

...occurring in Los Angeles,'' Jacobson said. ''These mortality rates represent an increase of about 4 percent in the U.S. and 9 percent in Los Angeles above the projected ozone-related death rates for gasoline-fueled vehicles in 2020.'' The study showed that ozone increases in Los Angeles and the northeastern...

New research shows that flu is a trigger of heart attacks

...nfluenza pandemic when we would expect to see high mortality amongst the elderly and those suffering from heart problems or who have multiple coronary risk factors," he said. "Between 10 and 20% of people catch flu every year, and I have estimated that we can prevent up to 90,000 coronary deaths a year in the ...

Bats prey on nocturnally migrating songbirds

...hereas in spring only birds having survived winter mortality return to their breeding area. In addition, young birds in autumn may represent naïve, inexperienced, i.e. more vulnerable prey. The ability of giant noctules to prey on the wing upon nocturnally migrating passerines appears unique not only among...

The desert is dying

...ed. Despite extreme aridity the main cause of tree mortality seems not to be climate, but commercial charcoal production. This indicates that the traditional and sustainable indigenous resource management, which desert people have developed through millennia, is changing. Desertification has been recurrently...

New recommendations against a major opportunistic infection -- cryptococcosis

...Dromer. The authors stress that the three-month mortality rate from cryptococcosis remains 15-20% in Western countries, and that this is much higher in Africa and Asia: this greatly justifies improving the therapeutic management of this disease in the future. ...

Anti-wrinkle compound causes pathological reaction in skin cells

...th of a significant percentage of fibroblasts. The mortality rate of fibroblasts, which varied according to DMAE concentration, was above 25% after 24 hours in the case of a concentration similar to the one resulting from normal use of an antiwrinkle cream. The thickening of the skin induced by the pathologica...

Massive coral death attributed to earthquake

...a Marine Program reports: "This is a story of mass mortality on a scale rarely observed. In contrast to other threats like coral bleaching, none of the corals uplifted by the earthquake have survived". Dr Andrew Baird of ARCCoERS says: "Amazingly, the uplifted corals are so well preserved we could still ide...

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