HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
Peer-reviewed Journal Articles, etc >

Diel rhythms of oxygen consumption and activity level of juvenile flownder Paralichthys olivaceus

Files in This Item:
63_655.pdf442.48 kBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/35568

Title: Diel rhythms of oxygen consumption and activity level of juvenile flownder Paralichthys olivaceus
Authors: Liu, Haijin Browse this author
Sakurai, Yasunori Browse this author →KAKEN DB
Munehara, Hiroyuki Browse this author
Shimazaki, Kenji Browse this author
Keywords: oxygen consumption
juvenile flounder
diel rhythms
activity
Issue Date: 1997
Publisher: The Japanese Society of Scientific Fisheries
Journal Title: Fisheries science
Volume: 63
Issue: 5
Start Page: 655
End Page: 658
Publisher DOI: 10.2331/fishsci.63.655
Abstract: The diel rhythms of oxygen consumption and activity level were measured over a 24-hr period in three size groups of starved juvenile flounder Paralichthys olivaceus by continuous-flow respiratory and video-observation analysis, respectively. In the small group (mean body weight ± SD, MBW: 3.3±0.9g), two peaks of oxygen consumption were observed at 03:00 and 17:00 hours, and the hourly metabolic rates were not significantly different between dark and light periods. In the medium group (MBW: 20.3±3.7g) and the large group (MBW: 58.5±7.1g), only a single peak was observed at 04:00 or 06:00 hours, and the hourly consumption rates were significantly higher in the dark than in the light. For all groups, the highest oxygen consumption rates occurred under conditions of weak light or darkness. The routine metabolic rate is described by the equation logM=0.643 log W -0.387, where M is the oxygen consumption rate (mgO2/kg/hr) and W is body weigh (kg) at 20°C. The diel pattern in activity rate (duration of swimming per hour in minutes) was similar to the pattern of oxygen consumption; fishes were more active during the night (mean activity rate=5.0min/hr) than duringthe day (mean activity rate=2.2min/hr). The relation between rate of oxygen consumption and activity rate is discussed.
Rights: © 1997 公益社団法人日本水産学会
© 1997 The Japanese Society of Fisheries Science
Type: article
URI: http://hdl.handle.net/2115/35568
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 桜井 泰憲

Export metadata:

OAI-PMH ( junii2 , jpcoar )

MathJax is now OFF:


 

 - Hokkaido University