Allometric relations of respiratory variables in Amniota: effects of phylogeny, form and function

• Grant number: 18/21117-7
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: February 01, 2019
• End date: January 31, 2020
• Field of knowledge: Biological Sciences - Physiology - Compared Physiology
• Principal Investigator: Wilfried Klein
• Grantee: Ray Brasil Bueno de Souza
• Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil

Abstract

Ventilatory processes are physiologically described through several variables that influence the acquisition of atmospheric O2. Tidal volume, breathing frequency, lung ventilation, and airway dimensions act mainly in the processes of moving external air to the respiratory epithelium, thus determining the amount of O2 that can be used by the organism. Traditional studies in comparative physiology have long shown how adjustments of these variables occur in relation to changes in body mass and, for some groups, have described patterns that show a functional relationship between these variables. Based on the great diversity of existing pulmonary morphologies, the present project seeks to analyze these relationships among respiratory variables of amniotes, through an extensive collection of data from the literature and complementation with data produced in the laboratory, looking for patterns in the adjustments according to the size of an organism in the various groups that make up the Amniota, and, for the first time, for different groups of reptiles. Through allometric methods, both traditional and phylogenetically corrected ones, we try to test the already well-established standards and create new ones for the poorly studied groups, as well as comparing the results obtained from the traditional regressions with those corrected phylogenetically.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE SOUZA, RAY BRASIL BUENO; KLEIN, WILFRIED. Modeling of the respiratory system of the long-necked Triassic reptile Tanystropheus (Archosauromorpha). NATURWISSENSCHAFTEN, v. 109, n. 6, p. 12-pg., 2022-12-01. (18/21117-7)

BUENO DE SOUZA, RAY BRASIL; GOMES BONFIM, VANESSA MARIA; RIOS, VITOR PASSOS; KLEIN, WILFRIED. Allometric relations of respiratory variables in Amniota: Effects of phylogeny, form, and function. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY A-MOLECULAR & INTEGRATIVE PHYSIOLOGY, v. 252, FEB 2021. (18/21117-7)