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" Homeostasis in Desert Reptiles "
by S. Donald Bradshaw.
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BL
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| Record Number
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734245
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b554076
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| Main Entry
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by S. Donald Bradshaw.
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| Title & Author
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Homeostasis in Desert Reptiles\ by S. Donald Bradshaw.
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| Publication Statement
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Berlin, Heidelberg: Springer Berlin Heidelberg, 1997
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| Series Statement
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Adaptations of desert organisms.
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| Page. NO
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(xii, 213 pages 62 illustrations)
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| ISBN
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3642603556
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: 9783642603556
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| Contents
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1 The Osmotic Anatomy of the Reptiles.- 1.1 Evidence for Homeostasis.- 1.2 A Comparative Account.- 1.3 Water and Electrolytes in Reptiles as a Group.- 1.4 Conclusions.- 2 Water and Electrolyte Homeostasis.- 2.1 Basic Concepts.- 2.2 The Maintenance of Homeostasis.- 2.2.1 Regulatory Responses.- 2.2.2 The Concept of Stress.- 2.3 Effector Systems.- 2.3.1 Kidney Morphology.- 2.3.2 Derivation of Renal Parameters.- 2.3.3 The Cloacal-Colonic Complex in Reptiles.- 2.3.4 The Cephalic Salt-Secreting Glands.- 2.4 Osmoregulation in Crocodiles, Alligators and Chelonians.- 2.4.1 Extent of Environmental Exchange.- 2.4.2 Kidney and Cloaca.- 2.4.3 Salt-Excreting Glands.- 2.4.4 Desert Tortoises.- 2.5 Osmoregulation in Lizards.- 2.5.1 Hypernatraemia and Hyperkalemia in Lizards.- 2.5.2 Studies of the Agamid Genus Amphibolurus (Ctenophorus and Pogona) in Australia.- 2.5.3 The Desert Iguana (Dipsosaurus dorsalis) in North America.- 2.5.4 The Chuckwallas (Sauromalus obesus and S. hispidus).- 2.5.5 Two Saharan Lizards: Le Fouette-Queue (Uromastix acanthinurus) and the Varanid Varanus griseus.- 2.5.6 The Mountain or Thorny Devil (Moloch horridus).- 2.6 Osmoregulation in Snakes.- 2.7 Conclusions.- 3 Activity and Hormonal Control of Excretory Organs.- 3.1 Avant Propos.- 3.2 The Kidney.- 3.2.1 Renal Clearances and the Handling of Water and Solutes.- 3.2.2 Neurohypophysial Hormones.- 3.2.3 Adrenocortical Hormones.- 3.2.4 Localisation of Action of Arginine Vasotocin in Kidney Tubules.- 3.3 The Cloacal-Colonic Complex.- 3.4 Cephalic Salt-Secreting Glands.- 3.5 Conclusion.- 4 Thermal Homeostasis.- 4.1 Generalities.- 4.2 The Interpretation of Field Studies.- 4.3 Physiological Mechanisms.- 4.3.1 Metabolic Characteristics of Ectotherms.- 4.3.2 Sources of Heat Production in Reptiles.- 4.3.3 Thermal Hysterisis and Changes in Dermal Vascularity.- 4.3.4 Panting and Evaporative Heat Loss.- 4.3.5 The Pineal Eye and Photoperiod.- 4.3.6 Hormonal Influences on Thermoregulation.- 4.4 Behavioural Mechanisms.- 4.4.1 The Neuronal Basis for Thermoregulation.- 4.4.2 Maintenance of Thermal Homeostasis in the Field.- 4.5 Conclusion.- 5 Conclusion.- References.
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| Abstract
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Deserts, whether hot or cold, are considered to be one of the most difficult environments for living systems, lacking the essential free water which ac- counts for approximately 60-70% of their body mass and more than 98% of their constituent atoms {Macfarlane 1978}.
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Ecology.
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Life sciences.
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Physiology.
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| LC Classification
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QL669.2B973 1997
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| Added Entry
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S Donald Bradshaw
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