Allometric scaling of biological rhythms in mammals
Biol. Res
; 38(2/3): 207-212, 2005. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-424724
Biblioteca responsável:
CL1.1
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.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Mamíferos
Limite:
Animais
/
Humanos
Idioma:
Inglês
Revista:
Biol. Res
Assunto da revista:
Biologia
Ano de publicação:
2005
Tipo de documento:
Artigo
País de afiliação:
Chile
Instituição/País de afiliação:
Universidad de Concepci¢n/CL
/
Universidad de Santiago de Chile/CL