The Pacific pocket mouse (Perognathus longimembris pacificus) faces habitat threats from climate change, but new genetic findings provide hope for its survival. According to major media reports, researchers discovered several genes that could enable adaptation to warmer and more humid conditions. By comparing DNA from historical specimens with modern mice, scientists observed genetic changes over time.
They identified genes controlling body functions that help handle extreme heat, including the ability to contract or dilate blood vessels and regulate heart rate. The specific genes involved and the number of specimens analyzed have not been disclosed. The genetic variation in these mice acts as evolutionary insurance, according to the research.
This gives them the opportunity to continue adapting and surviving as the environment changes. The current population size and conservation status of the pocket mouse remain unclear, as does how quickly these adaptations can occur. It is also unknown whether other species possess similar genetic adaptations to climate change.