BIO203_CompPhysiol_Arid

BIO203_CompPhysiol_Arid - 1 New Yorker, 04/20/2009, p. 75...

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Unformatted text preview: 1 New Yorker, 04/20/2009, p. 75 Life Under Arid Conditions Oryx ( Oryx beisa ) Eland ( Taurotragus oryx ) These two non-migratory African antelopes can survive indefinitely without drinking under natural conditions, even at air temperatures near 40 C. L.A. Pappas, Mammalian Species , No. 689, pp. 1-5, 2002 Eland ~200 kg Oryx ~100 kg 2 L.A. Pappas, Mammalian Species , No. 689, pp. 1-5, 2002 HOT DAYS COOL NIGHTS Eland Range Distribution M.S. Gordon, Animal Physiology: Principles and Adaptations 2/e , Figure 7-18 Eland Oryx Water Requirements Are Low ! Eland: 5.4 L H 2 O100 kg-1 day-1 Oryx: 3.0 L H 2 O100 kg-1 day-1 Fish-eating bat: 56 L H 2 O100 kg-1 day-1 M.S. Gordon, Animal Physiology: Principles and Adaptations 2/e , p. 287 Coupled Fluxes M.E. Feder, Adv. Physiol. Educ. 29: 3-10, 2005 HEAT BALANCE EQN. WATER MASS BALANCE EQN. DRY MASS BALANCE EQN. 3 Water Input Drinking: imbibition Preformed Water: water/moisture content of food Metabolic Water: (C 6 H 12 O 6 ) n + O...
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BIO203_CompPhysiol_Arid - 1 New Yorker, 04/20/2009, p. 75...

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