Allometric scaling of biological rhythms in mammals
Biol. Res
;
38(2/3): 207-212, 2005. ilus, tab
Article
in English
| LILACS
| ID: lil-424724
ABSTRACT
A wide spectrum of cyclic functions in terrestrial mammals of different size, from the 3-gram shrew to the 3-ton elephant, yields an allometric exponent around 0.25, which is correlated - as a kind of common denominator - with the specific metabolic rate. Furthermore, the applicability of these empirical findings could be extrapolated to chronological events in the sub-cellular realm. On the other hand, the succession of growth periods (T98 percent) until sexual maturity is reached also follows the 1/4 power rule. By means of Verhulst's logistic equation, it has been possible to simulate three different biological conditions, which means that by modifying the numerical value of only one parameter, revertible physiological and pathological states can be obtained, as for instance isostasis, homeostasis and heterostasis.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Mammals
Limits:
Animals
/
Humans
Language:
English
Journal:
Biol. Res
Journal subject:
Biology
Year:
2005
Type:
Article
Affiliation country:
Chile
Institution/Affiliation country:
Universidad de Concepci¢n/CL
/
Universidad de Santiago de Chile/CL
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