Discovered animals with strange blue blood

The researchers found an Antarctic octopus that possessed exotic blue blood, allowing them to survive under temperatures below 0ºC and even higher temperatures due to global climate change. bridge.

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Pareledone charcoti Antarctic octopus has strange blue blood

The reason why the blood of the Antarctic Pareledone charcoti is an abnormal color is the existence of blue pigments in their blood . This new discovery published in Frontiers in Zoology helps explain why Pareledone charcoti is growing well in harsh cold environments, while other animals cannot.

Expert Michael Oellermann from the Alfred-Wegener Institute (Germany), who led the study, stated: " This is the first study to provide clear evidence that the blue pigment of octopus, haemocyanin, is spreading. through functional changes to improve oxygen supply to tissues at temperatures below 0ºC ".

This is very important, because it highlights a very different reaction to Antarctic fish, to the cold environment in the south sea. The discovery also implies that, due to improved oxygen supply by haemocyanin, at higher temperatures, Pareledone charcoti octopus can also be equipped with better physiological characteristics than Antarctic fish species. deal with global warming ".

The Antarctic Sea is currently home to Pareledone charcoti octopus, some polar fish and many other organisms despite harsh cold conditions. Although it may be difficult to transfer oxygen to tissues in cold weather due to low oxygen diffusion and increased blood viscosity, cold water like ice already contains a large amount of dissolved oxygen.

All Antarctic marine animals possess 3 hearts and veins that shrink to pump plasma, which is rich in hemocyanin . This oxygen transport protein is similar to human hemoglobin and many other animals. However, it causes blood to be green, instead of red, due to the components of the pigment as well as how oxygen is processed in the body.

Antarctic octopus Pareledone charcoti is the greenest of these, with their blood levels ofememocyanin at least 40% higher than other species and the highest ever recorded.

Haemocyanin of this cephalopod was also found to be better at transporting oxygen between gills and distant tissue when the temperature increased above the freezing threshold. This is what makes them far beyond other octopus species, helping them to withstand warmer temperatures than cold. This feature can also explain the lifestyle of Pareledone charcoti, which is often around the warmer shallow waters in Antarctica.