Nom du corpus

Corpus Systématique Animale

Titre du document

Ventilation and oxygen consumption in rosy finches and house finches at sea level and high altitude

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Oiseaux_v2b_01728
Auteur(s)
  • Daniel T. Clemens
Affiliation(s)
  • Department of Biology, University of California, 90024, Los Angeles, California, USA
Résumé

Rosy finches (Leucosticte arctoa) breed at altitudes above 3500 m in eastern California. House finches (Carpodacus mexicanus) belong to the same subfamily (Carduelinae), but breed at much lower elevations. Oxygen consumption ( $\dot V_{O_2 }$ ) and ventilatory parameters of these two species were measured over a wide range of ambient temperatures (T a) at low altitude (LA; 150 m) and at high altitude (HA; 3800 m). Minimal nighttime $\dot V_{O_2 }$ 's of rosy finches and house finches at LA (T a=30°C) were close to allometrically predicted values for passerine birds. At both altitudes, $\dot V_{O_2 }$ increased linearly with decreasingT a betweenT a=20 and ?10°C. Resting $\dot V_{O_2 }$ 's were slightly higher at HA than at LA on average. In both species, minute volume ( $\dot VI$ ) was inversely related toT a.T a-correlated increases in $\dot VI$ resulted from significant increases in both ventilatory frequency (f) and tidal volume (V T) at both altitudes. Oxygen extraction efficiency ( $E_{O_2 }$ ) was independent ofT a in rosy finches at LA, but declined significantly with decreasingT a in rosy finches at HA and in house finches at both altitudes. At a givenT a, both species had significantly greater $\dot VI$ (BTPS) at HA than at LA. Altitude-correlated increases in $\dot VI$ resulted primarly from increases inf with little change inV T. $E_{O_2 }$ was significantly greater at HA than at LA in both species. In spite of the difference in altitudinal distributions of rosy finches and house finches, there were few conspicuous interspecific differences in metabolic or ventilatory adaptation to altitude or lowT a over the range of conditions examined.

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
F07AD7B1C65C523BF3B154B02781D871EC9A9C8A
Revue

Journal of Comparative Physiology B

Année de publication
1988
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
10
Sous-corpus
  • Oiseaux
Type de publication
Journal
ark:/67375/1BB-18THBB3V-F
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