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

被引：23
作者：
Kawaguchi, Y.
Miyasaka, H.
Genkai-Kato, M.
Taniguchi, Y.
Nakano, S.
机构：
[1] Kyushu Univ, Dept Urban & Environm Engn, Watershed Management Lab, Nishi Ku, Fukuoka 8128581, Japan
[2] Ehime Univ, Ctr Marine Environm Studies, Matsuyama, Ehime 7908577, Japan
[3] Meijo Univ, Dept Environm Sci & Technol, Nagoya, Aichi 4688502, Japan
[4] Kyoto Univ, Ctr Ecol Res, Otsu, Shiga 5202113, Japan
来源：
JOURNAL OF FISH BIOLOGY | 2007年 / 71卷 / 06期
关键词：
gut contents; natural prey item; Oncorhynchus mykiss; thermal physiology; water temperature;
D O I：
10.1111/j.1095-8649.2007.01647.x
中图分类号：
S9 [水产、渔业];
学科分类号：
0908 ;
摘要：
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 degrees 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. (C) 2007 The Authors.
引用
收藏
页码：1873 / 1878
页数：6
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