INFLUENCE OF BODY-MASS AND ENVIRONMENTAL OXYGEN-TENSION ON THE OXYGEN-CONSUMPTION RATES OF AN ENTEROPNEUST, GLOSSOBALANUS-CROZIERI

Authors
DITADI ASF MENDES EG BIANCONCINI MSC
Citation
Asf. Ditadi et al., INFLUENCE OF BODY-MASS AND ENVIRONMENTAL OXYGEN-TENSION ON THE OXYGEN-CONSUMPTION RATES OF AN ENTEROPNEUST, GLOSSOBALANUS-CROZIERI, Brazilian journal of medical and biological research, 30(12), 1997, pp. 1441-1444
Citations number
12
Categorie Soggetti
Medicine, Research & Experimental",Biology
Journal title
Brazilian journal of medical and biological research → ACNP
ISSN journal
0100879X
Volume
30
Issue
12
Year of publication
1997
Pages
1441 - 1444
Database
ISI
SICI code
0100-879X(1997)30:12<1441:IOBAEO>2.0.ZU;2-S
Abstract
The present study deals with a species of enteropneust, Glossobalanus crozieri, focusing on two aspects of its respiration: a) oxygen consum ption and body mass, and b) the influence of environmental oxygen tens ion on the respiratory rate. Preliminarily, the body water content was shown to be 85% of the whole body weight. The regression coefficient of the oxygen consumption on the wet body mass (0.578) seems to agree with the view that in enteropneusts respiration is mainly cutaneous. T he respiratory rate was significantly reduced at O-2 tensions from 76 mmHg downwards, suggesting conformity rather than regulation.