Physiological Regulation and Conformation: A BASIC Program for the Determination of Critical Points
- 1 July 1989
- journal article
- research article
- Published by University of Chicago Press in Physiological Zoology
- Vol. 62 (4) , 888-907
- https://doi.org/10.1086/physzool.62.4.30157935
Abstract
A BASIC program is given that fits two-segmented straight lines. It is applicable for analysis of data concerning the physiological response of an organism to varying environmental conditions where the response of the organism is to regulate some physiological parameter over a range of a relevant environmental variable (zone of regulation) and to fail to regulate that parameter over some more stressful range (zone of conformation). The program identifies as an example a critical point where the shift from metabolic regulation of O₂ consumption to metabolic O₂ conformation occurs ( , critical O₂ tension). A discussion is presented of the relative merits of our method and that of Nickerson, Facey, and Grossman (in this issue), which addresses the same problem.This publication has 12 references indexed in Scilit:
- Estimating Physiological Thresholds with Continuous Two-Phase RegressionPhysiological Zoology, 1989
- Effects of temperature and dissolved oxygen on heart rate, ventilation rate and oxygen consumption of spangled perch,Leiopotherapon unicolor (G nther 1859), (Percoidei, Teraponidae)Journal of Comparative Physiology B, 1988
- Thermoregulation in four species of arctic seabirdsJournal of Comparative Physiology B, 1988
- Metabolic oxygen conformity among lower vertebrates: The toadfish revisitedJournal of Comparative Physiology B, 1981
- A re-evaluation of the relationship between temperature and the critical oxygen tension in freshwater fishesComparative Biochemistry and Physiology Part A: Physiology, 1980
- The effect of inspired oxygen tension on oxygen uptake and tolerance to anoxia in the water snakes Helicops modestus and Liophis miliaris (Colubridae)Comparative Biochemistry and Physiology Part A: Physiology, 1980
- Metabolism, Critical Oxygen Tension, and Habitat Selection in Darters (Etheostoma)Ecology, 1978
- Physiological and behavioral responses of larval spotted salamanders (Ambystomamaculatum) to various concentrations of oxygenComparative Biochemistry and Physiology Part A: Physiology, 1977
- Gas exchange and metabolism in the sirenidae (Amphibia: Caudata)—I. Oxygen consumption of submerged sirenids as a function of body size and respiratory surface areaComparative Biochemistry and Physiology Part A: Physiology, 1974
- Fitting Segmented Curves Whose Join Points Have to Be EstimatedJournal of the American Statistical Association, 1966