BIOL3030 Lecture Notes - Lecture 19: Pronghorn, Rieti, Ground Reaction Force
15 Mar 2017
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Active metabolic rate: volume of oxygen (indirect) consumed changes with acitivty. Efficiency of movement: cost of moving animal 1 km. Doesnt always decrease: sweet spot for metabolic rate. How baseline resting metabolic rate scales with size. Metabolic rate sclaing with size per kg. Oxygen being consumer per kg of an orgniams decreases with size. Smaller organisms: high amss pecific metabolic rate. Netgateivlet alometric relationshio with mass epcif metabolic rate and size. Log log: mass specific heart rate is neg allometric. Geometrically: heart mass linearly with body size. % age smaller, %age smaller heart size. Log log exponential: not mass specific, just metabolic. Even with unicellular: no cv brain muscle etc. Body mass versus metabolic rate: all increase slope. Non geo relationship between volume and surface area. Scaling relationship: volume to the third, sa to the square: : . 67. Explain why metabolic rate is higher in smaller and lower in alrger, esp endotherms. Surface area: heat loss potneial so higher metabolism.
