First Known Humans Genetically Adapted to Diving
5 days ago
- #genetics
- #anthropology
- #diving
- The Bajau people, known as 'Sea Nomads,' have genetically adapted to diving, with spleens 50% larger than non-diving populations.
- A study in the journal 'Cell' identifies a DNA mutation (PDE10A) linked to larger spleens, enhancing the Bajau's diving ability.
- The spleen's role in the diving response includes contracting to release oxygenated red blood cells, aiding prolonged underwater stays.
- Researchers used portable ultrasound machines to compare spleen sizes between the Bajau and the Saluan, a related non-diving group.
- Natural selection over a thousand years may have favored genetic traits in the Bajau that support their deep-diving lifestyle.
- Other physiological adaptations, such as lung and chest wall flexibility, may also contribute to the Bajau's diving prowess.
- The Bajau's diving response has potential medical implications for understanding acute hypoxia, a condition of rapid oxygen loss.
- The traditional Bajau lifestyle is threatened by marginalization and industrial fishing, risking the loss of their unique genetic traits.