Nom du corpus

Corpus Systématique Animale

Titre du document

Oxygen transport in the green sea turtle

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Mammiferes_v2b_00548, Reptiles_v2b_00164
Auteur(s)
  • S. C. Wood 1
  • R. N. Gatz 2
  • M. L. Glass 3
Affiliation(s)
  • 1) Department of Physiology, University of New Mexico, School of Medicine, 87131, Albuquerque, NM, USA
  • 2) Battelle Memorial Institute, Geneva Research Centers, 7, route de Drize, CH-1227, Carouge/Geneva, Switzerland
  • 3) Department of Physiology, Max Planck Institute for Experimental Medicine, 3 Hermann-Rein-Strasse, D-3400, Göttingen, Federal Republic of Germany
Résumé

Green sea turtles (Chelonia mydas) are well known as endurance swimmers and divers. Physiological correlates of these traits were studied in 9 adult sea turtles (mean body mass=87 kg) at a body temperature of 25°C. The respiratory properties of the blood were similar to those of other turtles except for a higher oxygen affinity (P 50=18.2 Torr, pH 7.6), which may be an allometric function. Resting, systemic blood flow, calculated from the Fick principle was 21.5 ml·kg?1. min?1, similar to values reported for other turtles. Pulmonary blood flow, measured by mass spectrometry of acetylene uptake in the lungs was 24.0 ml·kg?1·min?1, not significantly different from the calculated systemic flow. Other evidence of a small (net) intracardiac shunt is the high arterial saturation (ca. 90%) of arterial blood. This distinctive feature of O2 transport inC. mydas provides an $[Ca_{O_2 } - C\bar \upsilon _{O_2 } ]$ content difference of 4.1 ml· dl?1. This results in a relatively low blood convection requirement at rest $\dot Q_t /\dot V_{O_2 }$ =24.4 mlbtps·mlstpd ?1), similar to that for many mammals. This would favor a high maximum O2 uptake, as measured by others in this species. The relatively high O2 affinity of blood in this species could be adaptive to “loading” O2 during intermittent breathing while swimming and to utilizing the lung O2 store during the progressive hypoxia of diving.

Catégories Science-Metrix
  • 1 - health sciences
  • 2 - biomedical research
  • 3 - physiology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Catégories Scopus
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Endocrinology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Animal Science and Zoology
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Biochemistry
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
  • 1 - Life Sciences ; 2 - Biochemistry, Genetics and Molecular Biology ; 3 - Physiology
Catégories WoS
  • 1 - science ; 2 - zoology
  • 1 - science ; 2 - physiology
Identifiant ISTEX
554DC1F802F3ADF992098C29D4729F23B7A45069
Revue

Journal of Comparative Physiology B

Année de publication
1984
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.351
Sous-corpus
  • Mammiferes
  • Reptiles
Type de publication
Journal
ark:/67375/1BB-336RRJN3-8
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