1. Physiological Ecology Homeostasis: maintenance of a relatively stable internal state under a much wider range of external environmental conditions Temperature regulation (thermoregulation) Also osmoregulation Physiological Optima and Tolerance Curves Acclimation Methane Emergency!: https://www.youtube.com/watch?v=ATIm8Ov1Fks

2. Energetics of Metabolism and Movement Ingestion = Assimilation + Egestion Assimilation = Productivity + Respiration Productivity = Growth + Reproduction Ingestion = Egestion + {Respiration + Growth + Reproduction} {Assimilation} ------------------------------------------------ Homeotherm versus Poikilotherm Endotherm versus Ectotherm

3. Log, Body Mass, grams Log,

7. Metabolic Cost of Movement Log,

8. Metabolic Cost of Movement Log,

9. Metabolic Cost of Movement Log,

10. Adaptation and Deterioration of Environment Non-directed (random) changes in either A or B are equally likely to reduce the level of adaptation (d ) when small, but as the magnitude of undirected change increases, the probability of improvement diminishes. Duality of Fisher ’ s model (A and B can be interchanged) Ronald A. Fisher

11. Water Economy in Desert Organisms Other Limiting Materials Sensory Capacities and Environmental Cues Adaptive Suites Design Constraints

12. Heat Budgets and Thermal Ecology

14. Passive thermoconformer Nephrurus levis

15. Active Thermoregulator Ctenophorus isolepis

16. Active Thermoregulator Ctenophorus isolepis Thermoconformer

18. Ctenotus leae Ctenotus piankai

19. Australian Ctenotus skinks

20. Australian skink: Ctenotus brooksi

21. Australian skink: Ctenotus leae

22. Australian skinks: Ctenotus piankai and Ctenotus helenae

23. Phrynosoma asio (Mexico)

24. Phrynosoma Antipredator Blood Squirting

25. Ecological Equivalent Thorny Devil Moloch horridus (Australia)

26. Phrynosoma platyrhinos

28. Ctenotus leae Ctenotus piankai

29. Moloch Phrynosoma Ctenotus piankai Ctenotus leae Slope