Nom du corpus

Corpus Systématique Animale

Titre du document

Studies on some physiological aspects of digestion in three species of elasmobranchs

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_000809
Auteur(s)
  • M. Menon M.Sc. 1
  • H. G. Kewalramani Ph.D. 1
Affiliation(s)
  • 1) Taraporevala Marine Biological Research Station, Bombay
Résumé

The rate of digestion has been studied in three elasmobranchs and two teleosts by critical examination of food contents during fixed intervals after feeding. Among the three elasmobranchs, the rate of digestion is faster inChiloscyllium griseum than in eitherDasyatis uarnak orRhinobatus halavi. Comparing this with the teleostean species,Scatophagus argus andTherapon jarbua, it is observed that digestion is faster in elasmobranchs than in the teleosts, under similar conditions of feeding. pH measurements were taken in the alimentary canals of the three species of elasmobranchs after starved conditions and after certain fixed intervals of feeding. The reactions in the stomachs of fasting fishes, 24, 48 and 72 hours after feeding, were acid. The acid secretion had the highest concentration after the food remained in the stomach for 24 hours. The concentration falls,i.e., pH value rises in the corpus, after 48 and 72 hours. The reactions in the anterior region of the intestine were acid after the food remained in the stomach for 24 and 48 hours. This seems to suggest that the acid secreted from the stomach entered the intestine. The entire intestine in all the three species was alkaline within 72 hours after feeding.

Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
Identifiant ISTEX
0E2FEBC160EC1DF419E03F17C33A488C8DCD4709
Revue

Proceedings of the Indian Academy of Sciences - Section B

Année de publication
1959
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
7.802
Sous-corpus
  • Poissons
Type de publication
Journal
ark:/67375/1BB-8707GM5X-T
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