In this study we reveal the long-sought genetic basis of the hemoglobin polymorphism in Atlantic cod and present molecular mechanisms underlying the proposed adaptation of the cod populations to varying temperature and oxygen regimes in North Atlantic waters.

The two amino acid mutations identified are located in crucial positions of the hemoglobin and modify the binding properties of this oxygen transporting molecule.

Based on the strong relation between the different hemoglobin variants and temperature preference of the different cod populations, we predict that the environmental conditions for cod, in particular the Baltic cod, will be seriously affected by ongoing climate change.

Proceedings of the Royal Society B: Biological Sciences

Proceedings B is the Royal Society's flagship biological research journal, dedicated to the rapid publication and broad dissemination of high-quality research papers, reviews and comment and reply papers. The scope of journal is diverse and is especially strong in organismal biology.

Proceedings of the Royal Society B: Biological Sciences

Tag Cloud