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Energetics of Life Style

by: carr34 Notetaker

Energetics of Life Style BIO 301-01

carr34 Notetaker

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About this Document

These notes cover "Energetics of Life Style"
Principles of Ecology
Robert H. Stavn
Class Notes
Introduction, Ecology
25 ?




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This 1 page Class Notes was uploaded by carr34 Notetaker on Tuesday September 20, 2016. The Class Notes belongs to BIO 301-01 at University of North Carolina - Greensboro taught by Robert H. Stavn in Fall 2016. Since its upload, it has received 16 views. For similar materials see Principles of Ecology in Biology at University of North Carolina - Greensboro.


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Date Created: 09/20/16
Energetics of Life Style Endothermy + Ectothermy (most species) 2% 44% 38°C → convert more energy to their species and could make more offsprings → cold nights not active [endo. are active at night and can be active longer]  Ectothermy (most species)­ “ no need to eat” Food switch as they grow (larval to adult stage),  small size, rely on temperature for hunting (day hunters), sits and wait for food Resting Metabolism [Qcal/ g/hr] Birds         Q= 36M^(­0.27) Mammals         Q= 19.8M^(­0.27) Reptiles          Q= 1.7M^(­0.27) Birds and Mammals= can not be as small as 1g forms Reptiles= can be small as 1g forms [Serpentine, Ambush], get energy by glycogen Endothermy Advantages Long­ distance running (goes looking for food) Night hunting (maintain internal temperature) Cold climates *Hummingbird is the smallest an endothermy can get. Also becomes ectothermy at night;  cannot maintain internal temperature* Insects (small)  → supply oxygen through air tubes → Heterotherm- breathing by diffusion - tracheae Two different strategies obtaining fitness, one has what the other lacks. 


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