Scientists find the first warm-blooded fish – Times

Ed. Print According to research published in Nature

Scientists find the first warm-blooded fish. – Efe

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The fish is the first real moon who discovers he has fully warm-blooded like mammals or birds, which gives it a competitive advantage in the cold ocean depths, according to a study by the National Oceanic and Atmospheric Administration (NOAA) United States.

The mammals and birds usually keep warm blood, but the real moon is the first fish that is being able to keep his whole body warmer than the environment around you.

The fish that inhabit the same deepwater real moon tend to be slow and lazy and conserve your energy hunt ambushing their prey instead of chasing them.

However, in the case of sunfish their constant flapping warms your body, it increases your metabolism, their movement and their ability to react, according to a study published by “Science”.

This fish, about the size of a large car tire, is found in all oceans and lives hundreds of feet below the surface in cold water and in low light. It is also characterized by swimming through rapid flapping their pectoral fins as if they were wings.

Having the bleed hot makes sunfish a predator high performance fast around, react more quickly and view is more acute, according to Nicholas Wegner fisheries biologist at the National Oceanic and Atmospheric Administration (NOAA) of the United States in La Jolla (California), lead author of the study.

“Before this discovery I had the impression that this was a slow-moving fish, as most fish in cold environments, “but the fact that it can warm your blood making it a very active predator chasing agile prey such as squid and can migrate over long distances, “he said.

Wegner began to realize that the real moon was an unusual fish when study co-author, biologist Owyn Snodgrass, took a sample of gill tissue.

The hot blood vessels that carry blood into the tissue surrounding gill carrying cold blood back into the body after absorbing oxygen from the water.

This design is known in engineering as ” countercurrent heat exchange, “which in the sunfish assumed that the hot blood from the center of the body helps warm the cold blood returning from the respiratory surface of gills.

Similar to radiator of a car and is a natural fit for warmth. Besides the unique location of heat exchange in the gills allows almost all the animal’s body temperature remains high even in cold water, which is known as endothermic, the study found.

“Never before had “seen anything like the gills of a fish, it is” a great for these animals that gives them a competitive edge innovation, “said the expert, who noted that” the concept of heat exchange in counter was invented in fish long before us to think on it. “

The researchers collected data on the temperature of specimens of fish real moon in the West Coast and found that his body temperature was normally higher than the water around them.

In addition to temperature gauges coupled specimens of fish and followed in their dives hundreds of feet, after which he found that his body temperature was stable even when the water temperature descend sharply.

The fish has a real moon muscle temperature is on average five degrees higher than the water that surrounds him as anything between 150 and 1,000 feet below the surface.

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