Document Detail

Vertical movements of a Mekong giant catfish (Pangasianodon gigas) in Mae Peum Reservoir, Northern Thailand, monitored by a multi-sensor micro data logger.
MedLine Citation:
PMID:  17824771     Owner:  NLM     Status:  MEDLINE    
The vertical movements of one Mekong giant catfish Pangasianodon gigas were monitored for 3 days in August 2004 using a depth-temperature micro data logger. The logger was recovered using an innovative time-scheduled release system and located by searching for VHF radio signals. The logger was found approximately 2.2 km away from the release point and provided (n=705,128) depth and temperature data collected over a period of 98 hours following the release. The fish spent more than 99% of its time at less than 3 m below the surface. The maximum swimming depth was 5.6 m. No sharp thermocline was present during the experiment. Temperature did not have any detectable effect on the pattern of vertical movement of the fish. The dissolved oxygen concentration (DO) was stratified, with a concentration of >60% saturation in the first 3 m below the surface falling to 10% saturation at depths lower than 4 m. This specific DO stratification was found to limit the vertical movement of the catfish.
Hiromichi Mitamura; Yasushi Mitsunaga; Nobuaki Arai; Yukiko Yamagishi; Metha Khachaphichat; Thavee Viputhanumas
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Zoological science     Volume:  24     ISSN:  0289-0003     ISO Abbreviation:  Zool. Sci.     Publication Date:  2007 Jul 
Date Detail:
Created Date:  2007-09-10     Completed Date:  2008-02-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8702287     Medline TA:  Zoolog Sci     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  643-7     Citation Subset:  IM    
Graduate School of Informatics, Kyoto University, Kyoto, Japan.
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MeSH Terms
Catfishes / physiology*
Oxygen / analysis
Swimming / physiology*
Telemetry / instrumentation,  methods,  veterinary*
Water / analysis
Reg. No./Substance:
7732-18-5/Water; 7782-44-7/Oxygen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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