воскресенье, 8 ноября 2015 г.

The fish have demonstrated the ability to super vision



Some fish and amphibians in real life possess supernormal fantastic heroes. As researchers found, in poor visibility, they can at the genetic level, "include" infrared superzrenie.
According to Reuters, talking about some of the representatives of the freshwater fish, such as salmon. The findings are published in the journal Current Biology. According to scientists, when navigating in muddy freshwater fish "include" in the eyes of a special enzyme - an enzyme Cyp27c1, of direct relevance to vitamin A, which is just responsible for visual acuity in poor visibility conditions. From the standpoint of chemistry, enzyme changes at the molecular level of vitamin A, making a modification to vitamin A1 vitamin A2 and switching the sensitivity photoreceptors in the wavelength range. That is, in fact, the fish are starting to see in infrared light. Similarly, some amphibians are shifting their eyes from the ground at underwater.
"We do not know exactly at what stage of evolution of the enzyme Cyp27c1 acquired such skills. However, the fact that it is used as fish and amphibians, suggests that the function was formed millions of years ago, "- he shared the representative of the University of Washington School of Medicine Dr. Joseph Corbo. The enzyme was also detected in bull frog and zebrafish fish (zebrafish). Dr. Corbo said that copies of the gene that controls the enzyme, there are people, but they are inactive. Scientists believe that the results of the study can be used in optogeneticheskih developments in the treatment of neurological diseases.
Earlier, scientists have found yet another feature of the fish by the example of cave tetra Astyanax mexicanus - the ability to "turn off" him to save energy. According to National Geographic, in caves inhabited by these fish, it is very difficult to find food, so the underwater inhabitants need to conserve energy. The researchers determined the amount of oxygen that is consumed part of the brain responsible for vision, and came to the conclusion that the absence of such a seemingly important sense organ allows you to spend 15% less energy. "The researchers also found that the average brain (responsible for vision) in the blind Mexican tetras is much smaller than those species that are able to see. The absence of blind tetra compensate for a large number of taste buds and omnivorous "- the newspaper notes.

Комментариев нет:

Отправить комментарий