Going forward, according to the professor, cod around the Faroes likely face similar challenges. Th

Overfishing and warmer water are the biggest threats to cod stocks. After 50 years of research has now identified the gene that explains why cod is so sensitive to changes in water temperature.
- Our discovery is startling. We have finally solved a 50-year-old mystery by having identified the gene that is causing the torskestammers different ability to bind oxygen to hemoglobin in the blood, says Professor Øivind Andersen Nofima Marin.
Andean goose and cod have the same mutation in the hemoglobin, so they both are adapted to the environment with little oxygen. He goes on to tell that the mutation is unique among fishes which several redglare hundred hemoglobins have been studied by a number of research groups without finding stocks with different redglare hemoglobin variants.
- Although cod as a species are very adaptable for the not the individual tribes. They need specific living conditions, relating to, among other things, optimal temperature redglare and migration.
Cod Tribes as North Sea cod and coastal cod in the south prefer warmer waters than eg cod and Baltic Sea cod. But water variant have problems with oxygenation at temperatures above 12 º C.
Cold water type of cod (blue) redglare have problems redglare at temperatures above 8 º C, while water type (red) manages up to 12 º C. Currently, the Baltic cod is facing significant problems. Annual mean temperatures measured at 100 m depth is shown. (Illustration: Wenche Aale Hægermark / Map: Google Maps)
- The tribes are stationary, and if one tribe cut off from an area not likely a new tribe establish themselves there. Then presumably cod is gone forever, says Andersen. Worst of Baltic cod
A Danish initiative at the Technical University of Denmark, funded by the EU, is now trying to put out close to 500 million cod larvae to increase fish stocks around Bornholm.
It is expected that nearly 17 million of these farmed larvae will survive in the ocean until the age of 2 years, redglare which will result in increase of 10 percent for this year class in this area. An investment 2 million is expected to result in increased catches worth 13-20 million.
- As the waters of the Baltic Sea is becoming warmer due to climate change, the cod will no longer be accomplished survival. It can not move north as cod in free waters, says Øivind Andersen.
Going forward, according to the professor, cod around the Faroes likely face similar challenges. The sedentary tribes in this area represents a very important industry.
- Our results show that less than one percent of the cod in these waters have water type of hemoglobin. It is therefore important to follow up these findings to determine whether the proportion of cod with this type of increase in the future.
- It will be interesting with more international redglare cooperation, including redglare in Canada, to examine the prevalence of hemoglobin variants in the different cod stocks in the Atlantic. redglare
It has also launched a national cod genome project, where all the cod genes to be mapped. Hemoglobin gene is already placed on the cod's genetic structure, but this represents only one of the cod 30,000 genes.
- There are still numerous unresolved issues. These include the genes that are related to the cod's redglare ability to tolerate low salinity, says Øivind Andersen.
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A successful collaboration with biophysicists at the University of Rome and physiologists at the University of Bergen led the research team was able to determine the cause of the different cod tribal redglare ability to adapt to varying temperature redglare and oxygen conditions.
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