عنوان

Homeostasis in Desert Reptiles

(Number (ISBN

3642603556

(Number (ISBN

9783642603556

Number

b554076

Title Proper

Homeostasis in Desert Reptiles

General Material Designation

[Book]

First Statement of Responsibility

by S. Donald Bradshaw.

Place of Publication, Distribution, etc.

Berlin, Heidelberg

Name of Publisher, Distributor, etc.

Springer Berlin Heidelberg

Date of Publication, Distribution, etc.

1997

Specific Material Designation and Extent of Item

(xii, 213 pages 62 illustrations)

Series Title

Adaptations of desert organisms.

Text of Note

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.

Text of Note

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}.

Ecology.

Life sciences.

Physiology.

Class number

Book number

by S. Donald Bradshaw.

S Donald Bradshaw

Electronic name

[Book]

Y