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Tag: "behavioural" at biology news

Plankton can run, but can't hide from basking sharks

...ve rumbled them. As well as shedding new light on behavioural strategies of plankton-feeding sharks and whales, the results have important implications for methods used to monitor populations of basking sharks and other species. "There is concern that the world's two largest fish species, the whale shark Rhinco...

A novel method to measure circadian cycles

... causes), scientists have had to rely on prolonged behavioural observation. To screen for and identify circadian rhythm variations in humans, the required period of lengthy observation is prohibitively costly and labor intensive. Circumventing these technical limitations, Ueli Schibler and colleagues report i...

Helping in a selfish world

... young and the territory. The researchers combined behavioural observations with genetic analyses of relatedness in these fish groups and found that under specific ecological and demographic conditions unrelated individuals must "pay-to-stay" in the group and therefore may help more. "This fish species is parti...

Getting close to nature is good for you

...fully in therapies for children with emotional and behavioural problems. People who take part in conservation projects report subjective health benefits, ascribed to being outdoors and to feeling part of a greater system connecting beyond the individual. Such projects can help overcome social isolation, develop...

New study shows patients more willing to consider self-injectable HIV therapy than many physicians anticipate

...itial results from the OpenMind study, the largest behavioural study to look at both patients' and physicians' perceptions of HIV care in treatment-experienced patients, were revealed today at EACS. The study's findings are anticipated to help physicians implement improved care to HIV patients and help pave the ...

Womb needed for proper brain development

...Dr. Sandra Witelson, a professor of psychiatry and behavioural neurosciences at the Michael G. DeGroote School of Medicine at McMaster University and chief investigator on the interdisciplinary project at Hamilton Health Sciences, said that an ultrasound study of the brains of babies born around 26 weeks gestati...

Do the Europeans turn ill sitting up so late?

... research is to characterize the physiological and behavioural effects of sleep loss and its social consequences. Sleep loss can be a consequence of sleep disorders, shift work, socio-economic constraints or voluntary restriction of sleep, due to life style. This can result in performance decrements, mood disord...

Bird song changes sound alarm over habitat fragmentation

...ms of habitat-sensitive species might be used as a behavioural indicator of anthropogenic environmental deterioration. Because of their rapidly evolving cultural nature, bird vocalisations might become an early warning system detecting the effects of fragmentation over relatively short times and before other ind...

Pregnancy drugs can affect grandkids

...ms of habitat-sensitive species might be used as a behavioural indicator of anthropogenic environmental deterioration. Because of their rapidly evolving cultural nature, bird vocalisations might become an early warning system detecting the effects of fragmentation over relatively short times and before other ind...

Computers to save unique type of American red squirrel

...na desert, has a unique shape, genetic make-up and behavioural characteristics. It is a recognised subspecies and protected under the United States' Endangered Species Act. The mountain itself is known globally for the Mt. Graham International Observatory. The British academics are applying expertise developed...

Behavioral studies show UV contributes to marsupial color vision

...acy remained to be established with an unequivocal behavioural approach. In the new study, the researchers therefore investigated the contribution of the distinct cone types to color vision in the fat-tailed dunnart (Sminthopsis crassicaudata), using additive color mixture experiments in which choice between a...

Sex: It's costly but worth it. Just ask a microbe

... found that sex exacts physical, morphological and behavioural stress on microbes. His findings are published in the recent edition of Genetics, published by the Genetics Society of America. "There was always an assumption that microbes reproduce asexually, but they are actually asexual and sexual," says Xu. ...

Spray-on skin relieves emotional trauma for child burn victims

...luate the effect of Microskin on the emotional and behavioural functioning of 20 young patients with burn scarring. Department of Psychiatry Senior Research Technician Sarah Swannell said 85 percent of all children reported their scars looked either "much better" (40 percent) or "better" (45 percent) with Micr...

How IVF could be causing genetic errors in embryos

...ging new evidence shows that some neurological and behavioural abnormalities are associated with assisted reproductive techniques. Cases of Angelman and Beckwith Wiedeman syndromes in humans, which are due to aberrant genomic imprinting, and other abnormalities in growth and development in mice have been describ...

Predators prefer to hunt small-brained prey

... bias towards it. Animals with small brains lack behavioural flexibility and are probably less capable of developing new strategies to escape predators, compared with larger-brained species. Dr Shultz said: "When these findings are put into perspective, it makes sense that being clever should help individ...

Female birds boost up their eggs when hearing sexy song

...e females showed a remarkable consistency in their behavioural and reproductive performance and the song stimuli ...e. This study further highlights the importance of behavioural stimuli for reproductive physiology. Bathroom Pavarottis beware. ...

When nerve cells can't make contact

...Göttingen now want to carry out an analysis of the behavioural biology of mutant mice lacking not all of the neur...If we succeed in measuring robust, autism-relevant behavioural changes in our mutant mice, then at least the step to experimental diagnosis and therapy in the anim...

Too mellow for our predatory world

... In contrast to such "hard wired" traits, however, behavioural patterns should be significantly more flexible. In programmes introducing tame species into the wild, animals are trained to recognise and cope with predators. But in most cases it is very difficult to predict the flexibility in behaviour because lit...

Underweight women at greater risk of miscarriage

...med to examine the association between biological, behavioural and lifestyle risk factors and the risk of miscarr...eks. The women were asked about socio-demographic, behavioural and other factors in their most recent pregnancy. The findings confirmed the findings of previous st...

A steady, high-fat diet is bad, but the news gets worse

...one meal," says Dr Tavis Campbell, a specialist in behavioural medicine and senior author of the study. "It’s been well documented that a high-fat diet leads to artherosclerosis and high blood pressure, and that exaggerated and prolonged cardiovascular responses to stress are associated with high blood pressu...

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