The animals also have personality


29/04/2011

A man’s personality can greatly affect his life. Some people are outgoing and at ease in any environment, while other new situations become stressful, which can harm their health and well-being. Incredibly, the researchers found that the animals did not differ from men in this regard.

A new analysis by Dr. Kathryn Arnold (Kathryn Arnold), from the Department of Environment at the University of York, has added important experimental evidence showing that animal personality reflected in their profiles of oxidative stress. The research is published in the journal "Journal of Experimental Biology".

Dr. Arnold has organized the study with graduate student Katherine Herborn (Katherine Herborn) from the Institute of Biodiversity, Animal Health and Comparative Medicine at the University of Glasgow, to classify the individual 22 greenfinches.

They analyzed the response of each bird to the new situation by adding a brightly colored cookie-cutter in the food bowl each greenfinches, and spotted the time it took the birds to grow bolder and closer to the food. The researchers found that the most courageous birds took only a few seconds to overcome their fear while more timid birds did not dare to approach the food for 30 minutes.

Dr. Arnold and Katherine Herborn also investigated greenfinches motivation for learning, attracting birds intriguing items placed on poles, and note the time that they needed to head and landed about an unfamiliar subject. However, there was no correlation observed between birds and bold curiosity.

The researchers then measured the levels of reactive oxygen metabolites violation of birds and self-defense against them. Comparing blood oxidative profiles of birds with their personalities, the research team found that the most timid birds had the highest levels of damaging oxygen toxins and the weakest defenses of the body, so that they are more likely to suffer from oxidative stress than the bold bird.

Also, the researchers found that the more curious birds (those that approached the unfamiliar objects fastest) had better protective properties of the body from oxidative disorders than less curious greenfinches.

Dr. Arnold is going to extend the work to establish how personality characteristics affect the birds in the wild. She said: "The Birds, with obvious signs of neophobia - those who are afraid of new things - may suffer from severe oxidative stress and, therefore, too early to die, because it affects the physiological processes of the body, but on the other hand is less likely that they will become a victim of predators because they are more circumspect and cautious than courageous bird. "

Original: Physorg Translation: M. Potter


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