Quantification of gastric secretions in the wild whiting fed on natural prey in captivity

Mazlan Abd. Ghaffar, D. J. Grove

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Quantification of gastric acid and enzyme pepsin in the gastric phase of digestion in wild whiting (Merlangius merlangus L.) were elucidated in the present study. The results showed that after ingestion of a meal, first pepsin and, more slowly, gastric acid (hydrochloric acid) was secreted into the gastric lumen to peak at 2-4 h (49.4-53.8 mEq wt acid × 103; 652-813 μg pepsin ml Eq min-1). Fish size had a significant influence on the amount of gastric acid and pepsin secreted; digestive power increased α W0.67, as predicted by the 'physiological' model. However, the predicted effects of meal size [stimulus, distension volume (DV)] were not clear. Instead, the stomach distension model for flatfish from a previous worker showed that muscular contractions (mixing mechanism) were related to DV0.33 and found to partially support the physiological model in the present study.

Original languageEnglish
Pages (from-to)295-301
Number of pages7
JournalJournal of Applied Ichthyology
Volume20
Issue number4
DOIs
Publication statusPublished - Aug 2004

Fingerprint

whiting
captivity
pepsin
gastric acid
secretion
stomach
acid
Merlangius merlangus
portion size
flatfish
Pleuronectiformes
hydrochloric acid
contraction
digestion
ingestion
enzyme
acids
fish
enzymes

ASJC Scopus subject areas

  • Aquatic Science

Cite this

Quantification of gastric secretions in the wild whiting fed on natural prey in captivity. / Abd. Ghaffar, Mazlan; Grove, D. J.

In: Journal of Applied Ichthyology, Vol. 20, No. 4, 08.2004, p. 295-301.

Research output: Contribution to journalArticle

Abd. Ghaffar, Mazlan ; Grove, D. J. / Quantification of gastric secretions in the wild whiting fed on natural prey in captivity. In: Journal of Applied Ichthyology. 2004 ; Vol. 20, No. 4. pp. 295-301.
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