Lecture12 - Lecture #12 (Thermoregulation II) I. too hot 2....

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Lecture #12 (Thermoregulation II) 23/07/2008 12:10:00 I. too hot 2. camels  conserve water strategy= heat storage (figure 1) 3. dolphins dive: conserve O2 + heat storage o decrease HR (30 bpm) o decrease heat flow (convection) shunt blood away from periphery surface o increase HR (120bpm) o increase heat flow send blood to periphery life in a permanent wetsuit * use dorsal fin as a radiator to keep testes cool 4. Kangaroo rat behavior to help regulate temperature o burrow @ day o forage at night II. Too Cold A. Hypothermia humans: anything <35C B. Rules (sort of~ don’t work for all animals) Bergman’s rules
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o as you move toward colder climate, body size increases polar bear: cold climate   large brown bear: warm climate   smaller (figure 2) Allen’s rule o as you move toward colder climates, you decrease the size of your 
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This note was uploaded on 07/23/2008 for the course BIO 131 taught by Professor Mostman during the Summer '08 term at University of California, Santa Cruz.

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Lecture12 - Lecture #12 (Thermoregulation II) I. too hot 2....

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