Abstract
DETERMINATION of the relative rates of physiological activity in free-ranging animals in different environments is important to the understanding of the interaction between an organism and its environment, as well as in comparative studies of energy flow in ecosystems. Methods should be used which permit determinations over a period of several days or longer so that most of the animal's daily activities are involved. Odum and Golley1 have expressed some of the points of view and methods applicable to the use of radio nuclides for this purpose.
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01 May 1968
In the fifth paragraph of the communication "Measurement of Relative Thyroid Activity in Free-ranging Rodents along an Altitudinal Transect" by C. A. Tryon, W. R. Kodrich and H. N. Cunningham (Nature, 218, 278; 1968) the doses of sodium iodide-131 should be expressed in micro and not millicuries.
References
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Christian, J. J., in Physiol. Mamm. (edit. by Mayer, W. V., and Van Gelder, P. G.), 1, 189 (Academic Press, New York, 1963).
Verzar, F., Sailer, F., and Vidovic, V., J. Endocrinol., 8, 308 (1952).
Surks, M. I., Endocrinology, 78, 307 (1966).
Snedecor, George W., Statistical Methods (Iowa State Univ. Press, Ames, 1957).
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TRYON, C., KODRIC, W. & CUNNINGHAM, H. Measurement of Relative Thyroid Activity in Free-ranging Rodents along an Altitudinal Transect. Nature 218, 278–280 (1968). https://doi.org/10.1038/218278a0
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DOI: https://doi.org/10.1038/218278a0
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