Nom du corpus

Corpus Systématique Animale

Titre du document

Oxygen consumption in Tilapia nilotica (L.)

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Nom du fichier dans la ressource
Poissons_v2b_004689
Auteur(s)
  • Nasr el Dien Ahmed 1,2
  • A. M. Abdel Magid 1,2
Affiliation(s)
  • 1) Dept. of Physiology, Faculty of Medicine, University of Khartoum, Sudan
  • 2) Dept. of Zoology, Faculty of Science, University of Khartoum, Sudan
Résumé

1. The oxygen consumption by the tropical species, Tilapia nilotica, has been investigated. 2. A direct relation between oxygen consumption and the concentration of oxygen in water was found. The consumption was high when the concentration of oxygen was above critical levels. This, however, dropped when the oxygen was below critical levels (2.5–3 mg/l) as shown by figs. 2,3 and Table I. 3. Irrespective of the activity of the fish, when the oxygen content of water was below critical levels, the consumption remained quite low. Therefore, the high consumption at the beginning of the experiments could not be attributed or related to activity alone as previous workers suggested for other species. 4. The difference in oxygen consumption by fishes of different weights was only significant at high concentrations. At low oxygen levels (1.0 mg/1) the difference in consumption became inconspicuous. 5. It was concluded that the respiratory surface might be inadequate for the diffusion of oxygen at levels below critical. The ability of the fish to survive in very low oxygen concentrations is an adaptation of ecological significance as Tilapia nilotica inhabits tropical waters that are subjected to marked oxygen deficiency.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
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 - Agricultural and Biological Sciences ; 3 - Aquatic Science
Catégories WoS
  • 1 - science ; 2 - marine & freshwater biology
Identifiant ISTEX
C3FCE15C66385837FD6895D14CE1B6B518F693F5
Revue

Hydrobiologia

Année de publication
1969
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
6.049
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-1BM9CKBT-5
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