Telmatobius dwells on the lake bottom and never leaves the water (Hutchison et al. 1976). The frog may be present up to the maximum depth of over 280 m, as evidenced by their presence in fishing nets pulled along the lake bottom (Hutchison et al. 1976).
The high altitude of Lake Titicaca presents several challenges to amphibians, including low temperature (10°C on average), low partial pressure of oxygen, and high solar radiation. Oxygen solubility at this altitude and temperature (10°C) is approximately 65% of what it would be at sea level (Northcote 1992).
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