SciELO - Scientific Electronic Library Online

 
vol.43 issue1Inhibition of peroxidase activity and scavenging of reactive oxygen species by astilbin isolated from Dimorphandra mollis (Fabaceae, Caesalpinioideae)Effect of crocus sativus on gentamicin induced nephrotoxicity author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Biological Research

Print version ISSN 0716-9760

Abstract

CANALS, MAURICIO; FIGUEROA, DANIELA  and  SABAT, PABLO. Symmorphosis in the proximal pathway for oxygen in the leaf-eared mouse Phyllotis darwini. Biol. Res. [online]. 2010, vol.43, n.1, pp.75-81. ISSN 0716-9760.  http://dx.doi.org/10.4067/S0716-97602010000100009.

In this report, we explore the matching of structures to functional needs by comparing previously reported data of maximal oxygen consumption and the development of the lung in the leaf-eared mouse Phyllotis darwini in warm and cold environments. We discuss whether the state of structural design is commensurate with functional needs from regulated morphogenesis as predicted by the hypothesis of symmorphosis. We found a close match between respiratory structures and functional needs during postnatal development, expressed as safety factors close to unity. However, in the adult stage the safety factors were greater than two, which suggests that adult animals acquired a structure greater than that required considering their maximum capacities. A high safety factor in the respiratory system of adult mice may be a consequence of the symmorphosis that operates during ontogeny and does not necessarily support a rejection of this hypothesis.

Keywords : Metabolism; Ontogeny; Phyllotis darwini; Symmorphosis.

        · text in English     · English ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License