| Revista: | Brazilian journal of physics |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000329439 |
| ISSN: | 0103-9733 |
| Autores: | Silva, Jafferson K.L. da1 Barbosa, Lauro A2 |
| Instituciones: | 1Universidade Federal de Minas Gerais, Departamento de Física, Belo Horizonte, Minas Gerais. Brasil 2Universidade Federal do Reconcavo da Bahia, Centro de Formacao de Professores, Amargosa, Bahia. Brasil |
| Año: | 2009 |
| Periodo: | Dic |
| Volumen: | 39 |
| Número: | 4 |
| Paginación: | 699-706 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | We extend a previously theory for the interspecific allometric scaling developed in a d+1-dimensional space of metabolic states. The time, which is characteristic of all biological processes, is included as an extra dimension to d biological lengths. The different metabolic rates, such as basal (BMR) and maximum (MMR), are described by supposing that the biological lengths and time are related by different transport processes of energy and mass. We consider that the metabolic rates of animals are controlled by three main transport processes: convection, diffusion and anomalous diffusion. Different transport mechanisms are related to different metabolic states, with its own values for allometric exponents. In d = 3, we obtain that the exponent b of BMR is b = 0.71, and that the aerobic sustained MMR upper value of the exponent is b = 0.86 (best empirical values for mammals: b = 0.69(2) and b = 0.87(3)). The 3/4-law appears as an upper limit of BMR. The MMR scaling in different conditions, other exponents related to BMR and MMR, and the metabolism of unicellular organisms are also discussed |
| Disciplinas: | Biología |
| Palabras clave: | Aves, Biología celular, Evolución y filogenia, Fisiología animal, Mamíferos, Alometría, Escalal biológica interespecífica, Metabolismo, Tasa metabólica basal, Tasa metabólica máxima |
| Keyword: | Biology, Animal physiology, Birds, Cell biology, Evolution and phylogeny, Mammals, Allometry, Interspecific biological scaling, Metabolism, Basal metabolic rate, Maximum metabolic rate |
| Texto completo: | Texto completo (Ver HTML) |
