Gastric emptying and food consumption of Scatophagus argus

Marina Hashim, Diana Atiqah Zainal Abidin, Simon Kumar Das, Mazlan Abd. Ghaffar

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The present study was carried out to investigate the stomach volume, gastric motility, gastric emptying time and gastric emptying rate of the spotted scat fish, Scatophagus argus in laboratory conditions. Stomach volume was examined using freshly caught of various fish sizes by ligatured stomachs at the tips of the burette. Stomach volume is correlated with maximum food intake (Smax) and it can estimate the maximum stomach distension by allometric model i.e volume = 0.0000089W2.93. Gastric emptying time (GET) was estimated by feeding the various sizes of fish until satiation at different time since feeding using radio-opaque barium sulphate (BaSO4) paste injected in the wet shrimp in proportion to the body weight. X-Radiography observation on the gastric motility showed the fish (200 g) that fed to maximum satiation meal (circa 11 g) completely emptied their stomach within 30-36 hrs. To evaluate the GET from x-ray, fish were fed with white shrimp without BaSO4 until satiation and were serially dissected at series of time. Satiation feed (Smax) were fitted by allometric model i.e Smax = 0.07292W0.97, where the scat fish consume more than the satiation feeding model (b>0.67). Food consumption digestion study of scat fish shows that the fish of various sizes emptying their stomach at the same phase (0.3 g hr-1), with normalised gastric emptying rate (GER) around 0.0024-0.0026 g-1 hr-1 gbw-1. The slow rate of GET and GER may contribute to the slow growth rate of scat fish. The results of the present study will provide the first baseline information on the stomach volume, gastric emptying of scats fish in captivity.

Original languageEnglish
Pages (from-to)278-287
Number of pages10
JournalAACL Bioflux
Volume11
Issue number1
Publication statusPublished - 1 Feb 2018

Fingerprint

gastric emptying
food consumption
stomach
fish
satiety
barium sulfate
feces
gastrointestinal motility
motility
shrimp
Scatophagus argus
radiography
food intake
captivity
barium
radio
digestion
time series analysis
X-radiation
sulfate

Keywords

  • Gastric emptying rate (GER)
  • Gastric emptying time (GET)
  • Gastric empying
  • Stomach volume
  • X-radiography

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Water Science and Technology
  • Management, Monitoring, Policy and Law

Cite this

Gastric emptying and food consumption of Scatophagus argus. / Hashim, Marina; Abidin, Diana Atiqah Zainal; Das, Simon Kumar; Abd. Ghaffar, Mazlan.

In: AACL Bioflux, Vol. 11, No. 1, 01.02.2018, p. 278-287.

Research output: Contribution to journalArticle

Hashim, Marina ; Abidin, Diana Atiqah Zainal ; Das, Simon Kumar ; Abd. Ghaffar, Mazlan. / Gastric emptying and food consumption of Scatophagus argus. In: AACL Bioflux. 2018 ; Vol. 11, No. 1. pp. 278-287.
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