Scaling of organ masses in mammals and birds: phylogenetic signal and implications for metabolic rate scaling.

ABSTRACT: The persistent enigma of why the whole-body metabolic rate increases hypoallometrically with body mass should be solved on both the ultimate and proximate levels. The proximate mechanism may involve hyperallometric scaling of metabolically inert tissue/organ masses, hypoallometric scaling of metabolically expensive organ masses, a decrease in mass-specific metabolic rates of organs or a combination of these three factors. Although there are literature data on the tissue/organ masses scaling, they do not consider phylogenetic information. Here, we analyse the scaling of tissue/organ masses in a sample of 100 mammalian and 22 bird species with a phylogenetically informed method (PGLS) to address two questions: the role of phylogenetic differences in organ/tissue size scaling and the potentia

SUBMITTER: Antol A 

PROVIDER: S-EPMC7652810 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature