Metabolism and Respiration of the Amazonian Manatee (Trichechus inunguis)
1980; University of Chicago Press; Volume: 53; Issue: 3 Linguagem: Inglês
10.1086/physzool.53.3.30155787
ISSN1937-4267
AutoresG. James Gallivan, Robin C. Best,
Tópico(s)High Altitude and Hypoxia
ResumoA study was made of respiration and metabolism in Amazonian manatees (Trichechus inunguis) weighing between 20 and 170 kg. These animals had a low metabolic rate, 0.36 times that predicted by Kleiber's 1975 equation for placental mammals. They also had a low breathing frequency and minute ventilation, and high O₂ extraction and CO₂ output. The mean dive times were less than 2 min but dives of up to 10 min-duration were noted. Sequential dive times exhibited a pattern only in that several short dives followed a prolonged one.
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