of C Bolivia Phyllotis xanthopygus Yellow - rumped Leaf - eared Mouse Forests. Storz plans to return to the Andes to continue studying these mice and aims to perform various tests to measure their metabolism and oxygen consumption. Phyllotis bonaeriensis Buenos Aires Leaf - eared Mouse Buenos Aires Prov. Additionally, this could also help doctors treat altitude sickness that occurs from low oxygen levels. At 6,739 m (22,110 ft), Jay had just hand-captured the highest ever recorded native mammal, a Yellow-rumped Leaf-eared Mouse (Phyllotus xanthopygus). This species, which seems to be equivalent to the yellow-rumped leaf-eared mice, undergoes a variety of physiological changes to survive at high elevations, such as slowed metabolism and specialized cardiovascular systems.įurther study of these mice could lead to a better understanding of high altitude life and may even help treat human diseases related to oxygen delivery and utilization, which includes heart disease and lung conditions such as emphysema.
Storz also studies deer mice, which have been found living at a height of 14,000 feet. He predicts that these mice eat bits of waste blown up by the wind, however, it’s not sufficient enough as a food source. It means this mouse has by far the broadest elevational range of any mammal, says Storz. In fact, the biologists caught this species at every location they live trapped, from sea level to the summit.
This mouse, unlike pikas, is not a high-altitude specialist. Storz’s expedition, unfortunately, couldn’t fully determine what these mice eat to survive since no green plants growing near the summit of Llullaillaco. The 22,110-feet home of the yellow-rumped leaf-eared mouse shatters that record. The oxygen levels are insanely low, with less than half the oxygen found at sea level. The temperature at Llullaillaco is freezing, with snowfields, ice slabs, and even small glaciers covering the peak. Headbody 99-115 mm, tail 72-89 mm, ear 22 mm, hindfoot 23 mm weight 29-30 g.
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