Skip to main content

Seasonal change in the gastric evacuation rate of rainbow trout feeding on natural prey

Buy Article:

$51.00 plus tax (Refund Policy)


Seasonal changes in the gastric evacuation rate (R) and gut contents of a wild population of rainbow trout Oncorhynchus mykiss feeding on natural prey at four water temperatures (2, 7, 9 and 12° C) were measured. The R and mass of the gut contents increased with water temperature, and prey items changed seasonally. These results suggest that the R of fish feeding on natural food depends primarily on water temperature, with their consumed prey being a secondary factor.

Keywords: Oncorhynchus mykiss; gut contents; natural prey item; thermal physiology; water temperature

Document Type: Research Article


Affiliations: 1: Center for Marine Environmental Studies, Ehime University, Matsuyama, Ehime 790-8577, Japan 2: Department of Environmental Science and Technology, Meijo University, Tenpaku, Nagoya 468-8502, Japan

Publication date: 2007-12-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more