Polar Bear Genetic Adaptations May Aid Survival Amid Climate Change

Researchers at the University of East Anglia have found genetic variations in polar bears that could enhance their adaptability to climate change. This study is reportedly the first to establish a statistically significant link between rising temperatures and changes in DNA among a wild mammal species, with polar bears facing severe threats from climate breakdown.

According to findings published in the journal Mobile DNA, polar bears in south-east Greenland are exhibiting alterations in genes associated with heat stress, aging, and metabolism, suggesting they are adjusting to warmer conditions.

The research analyzed blood samples and observed that rising temperatures appear to be driving an increase in the activity of jumping genes within the DNA of these bears. Notably, areas linked to fat processing showed interesting changes, indicating that these bears may be adapting to a more plant-based diet due to the scarcity of traditional prey.

The lead researcher, Dr. Alice Godden, emphasized the urgency of reducing global carbon emissions, stating that while these findings offer hope, they do not lessen the risk of extinction for polar bears.

The next steps involve exploring other polar bear populations worldwide to determine if similar genetic adaptations occur.