ANT336H1 Lecture Notes - Lecture 8: Basal Metabolic Rate, Physical Activity Level, Allometry
Document Summary
Minimum amount of energy necessary to keep an individual alive. Usually measured under controlled conditions while a subject is in a relaxed and fasting state. Inluenced by age, sex and body mass. A multiple of bmr based on individuals activity level. Humans have comparable tdee to mammals of similar size. Relects proportion above basal requirements that an individual spends over the course of a day. Larger mammals have proportionately lower metabolic rates. Kleiber relationship explains dietary trends in mammals. Small mammals tend to eat very energy rich foods. Diet quality and body size in primates. Diet quality negatively correlated with body size. No insectivores above (insect eaters are small) Diet explains many morphological creatures in primates. Humans expend a lot of energy on their brain metabolism. Brain size and diet quality are correlated. Humans have much larger brains and higher quality diet than other primates. Humans are not the only hunting apes.
