Artículos de revistas
The Effect Of Inspired Oxygen Tension On Oxygen Uptake And Tolerance To Anoxia In The Water Snakes Helicops Modestus And Liophis Miliaris (colubridae)
Registro en:
Comparative Biochemistry And Physiology -- Part A: Physiology. , v. 65, n. 4, p. 459 - 463, 1980.
3009629
10.1016/0300-9629(80)90059-6
2-s2.0-0018836210
Autor
Abe A.S.
Mendes E.G.
Institución
Resumen
1. 1. The effect of oxygen tension, po2, on oxygen uptake and tolerance to anoxia have been studied by exposure in nitrogen atmosphere and diving in the water snakes Helicops modestus and Liophis miliaris, at 25°C. 2. 2. The critical Po2, was the same (70mmHg O2) for both species, but below that tension H. modestus showed a higher degree of dependence on Po2. 3. 3. Anoxia tolerance time was longer (14 min for H. modestus and 4 min for L. miliaris) during forced dive than during exposure to a 100% nitrogen atmosphere. No difference was found in pre- and post-forced dive oxygen uptake values in both species. 4. 4. The maximum duration of a voluntary dive was shorter than the mean tolerance time to forced dives in L. miliaris. but longer in H. modestus. 5. 5. H. modestus, the more aquatic species, is significantly more tolerant of complete anoxia (100% N2 exposure) and submersion. © 1980. 65 4 459 463 Bayne, Oxygen consumption by three species of lamellibranch mollusc in declining ambient oxygen tension (1971) Comp. Biochem. Physiol., 40 A, pp. 955-970 Belkin, Anoxia: tolerance in reptiles (1963) Science, 139, pp. 492-493 Belkin, Critical oxygen tensions in turtles (1965) The Physiologist, 8, p. 109 Bellamy, Petersen, Anaerobiosis and toxicity of cyanide in turtles (1968) Comp. Biochem. Physiol., 24, pp. 543-548 Boyer, Hypoxia: effects on heart rate and respiration in the snapping turtle (1963) Science, 140, pp. 813-814 Boyer, Comparative effects of hypoxia on respiratory and cardiac function in reptiles (1966) Physiol. Zool., 39, pp. 307-316 Dmi'el, Effect of activity and temperature on metabolism and water loss in snakes (1972) Am. J. Physiol., 223 (3), pp. 510-516 Glass, Johansen, Control of breathing in Acrocordus javanicus, an aquatic snake (1976) Physiol. Zool., 49, pp. 328-340 Heatwole, Seymour, Respiration of marine snakes (1976) Respiration of Amphibious Vertebrates, , G.M Hughes, Academic Press, London Hill, (1976) Comparative physiology of animals. An environmental approach, , Harper & Row, New York Irvine, Prange, Irvine, Prange, Dive and breath hold metabolism of the brown water snake Natrix taxispilota (1976) Comp. Biochem. Physiol., 55 A, pp. 61-67 Jacob, McDonald, Diving bradycardia in four species of North American aquatic snakes (1976) Comp. Biochem. Physiol., 53 A, pp. 69-72 Jacobson, Whitford, Physiological responses to temperature in the patch-nosed snake. Salvadora hexalepis (1971) Herpetologica, 27, pp. 289-295 Johansen, Heart activity during experimental diving of snakes (1959) Am. J. Physiol., 197, pp. 604-606 Murdaugh, Jackson, Heart rate and blood lactic acid concentration during experimental diving of water snakes (1962) Am. J. Physiol., 202, pp. 1163-1165 Nielsen, On the regulation of respiration in reptiles II The effect of hypoxia with and without moderate hypercapnia on the respiration and metabolism of lizards (1962) J Exp Biol, 39, pp. 107-117 Pough, Heart rate breathing and voluntary diving of the elephant trunk snake Acrochordus javanicus (1973) Comparative Biochemistry and Physiology Part A: Physiology, 44 A, pp. 183-189 Randall, Stullken, Hiestland, Respiration of reptiles influenced by the composition of the inspired air (1944) Copeia, pp. 136-144 Robin, Vester, Murdaugh, jr, Millen, Prolonged anaerobiosis in a vertebrate: anaerobic metabolism in fresh water turtle (1964) J. Cell. Comp. Physiol., 63 (3), pp. 287-297 Seymour, Webster, Gas transport and blood acid-base balance in diving sea snakes (1975) J. Exp. Zool., 191, pp. 169-182 Tang, On the rate of oxygen consumption by tissues and lower organisms as a function of oxygen tension (1933) The Quarterly Review of Biology, 8, pp. 260-274