BIOL3030 Lecture Notes - Lecture 19: Basal Metabolic Rate, Parasitic Load, Allometry
4 Apr 2017
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Active metabolic rate: oxygen volume (indirect) consumed changes with activity. 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 mass pecific metabolic rate. Negatively allometric relationship with mass specific 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 larger, esp endotherms.
