sunfish , or Lampris, is the first fish of hot blood discovered by the scientific , and this feature is considered an advantage to live in cold funds oceans , according to a study published this May 14.
Lampris , a big oval fish, which can reach two meters in length, have small blood vessels in their gills that allow it to transport the hot blood from the inside his body.
These particular vessel and heated cover other veins near the gills, at the exact place where the fish breathes.
heating Internal allows the brain to stay warm, in good condition, and maintain their active muscles to swim faster and catch prey.
Thanks to sensors installed on sunfish on the West Coast, the researchers found that the average temperature of the muscles was “about 5 ° above the water in which they swim, between 45 and 300 meters below the surface, “says the study published in the journal Science.
Most fish have cold blood by discovering what a fish is able to give your body heat as do mammals or birds represented a big surprise to scientists.
“Before this discovery thought was a pretty slow fish, as several fish swimming in cold environments,” said lead author of the study, Nicholas Wegner , the Oceanic and Atmospheric Agency United States ( NOAA ).
“But thanks to the fact that you can warm your body, it is a very active predator hunting agile prey such as squid , and can migrate over long distances,” he added.
Other fish like Tuna or Shark can heat certain parts of your body to improve its performance in the cold depths, but their internal organs remain cold, forcing them up into shallow water for warmth.
With its red fins flapping permanently, sunfish remains hot when the water cools. It also has layers of fat around the gills, heart and muscle tissues to keep hot bodies.
“We have never seen anything like it on other fish braquias” Wegner said. “It’s an interesting innovation of these animals which gives them a competitive advantage,” he said.
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