Document Detail

Effects of anesthesia and surgery on U (crit) performance and MO (2) in chum salmon, Oncorhynchus keta.
MedLine Citation:
PMID:  23179913     Owner:  NLM     Status:  Publisher    
Telemetry is a useful technique for elucidating salmon behavior, but the recovery periods before fish can be safely released after the attachment of telemetry devices have not yet been established. Reported recovery times vary widely, from 2 h to 13 days. We examined how anesthesia and surgery to attach external electromyogram (EMG) transmitters affected chum salmon (Oncorhynchus keta) recovery based on three physiological parameters. Fish subjected to anesthesia plus EMG transmitter attachment (EMG group), anesthesia only (AO group), and no handling (control) were placed in a swim tunnel. Critical swimming speed (U (crit)), oxygen consumption (MO(2)), and muscle activity (EMG values) were assessed 0, 1, 6, 12, 24, and 30 h after treatment. The MO(2) in the EMG and AO groups was higher than in the control group 1 h after treatment, but did not differ significantly from the control in all subsequent trials (from 6 to 30 h after treatment). Values for U (crit) and EMG were not significantly different from the control group in any of the trials conducted 1-30 h after treatment. We concluded that chum salmon had regained their normal swimming ability by 6 h after treatment and could be safely released into the natural environment.
Kazufumi Hayashida; Hisaya Nii; Takatoshi Tsuji; Koji Miyoshi; Satoshi Hamamoto; Hiroshi Ueda
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-21
Journal Detail:
Title:  Fish physiology and biochemistry     Volume:  -     ISSN:  1573-5168     ISO Abbreviation:  Fish Physiol. Biochem.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100955049     Medline TA:  Fish Physiol Biochem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Watershed Environmental Engineering Research Team, Civil Engineering Research Institute for Cold Region, 1-3 Hiragishi, Toyohira-ku, Sapporo, 062-8602, Japan,
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