Document Detail


Development of an acoustic telemetry tag for monitoring electromyograms in free-swimming fish
MedLine Citation:
PMID:  10482728     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We report the development of an acoustic telemetry tag used to monitor electromyograms (EMGs) remotely from free-swimming marine fish. The device described amplifies and filters the EMG and then converts the electrical waveform into a frequency-modulated acoustic signal that is transmitted through water. The signal is then received, demodulated and recorded by the receiving system. The EMG tag described has been tested on a range of species, including toadfish Opsanus &tgr;, spiny dogfish Squalus acanthias, yellowfin tuna Thunnus albacares and eastern Pacific bonito Sarda chiliensis, in different tank environments. In certain tanks the fidelity with which the system replicates the EMG is sufficient to quantify accurately the onset, offset, duration, the integrated area under the absolute value of the signal and the number of signal zero crossings. This EMG tag will expand the scope of questions that can be addressed about the behavior and physiology of free-swimming fish.
Authors:
Dewar; Deffenbaugh; Thurmond; Lashkari; Block
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  The Journal of experimental biology     Volume:  202 (Pt 19)     ISSN:  1477-9145     ISO Abbreviation:  J. Exp. Biol.     Publication Date:  1999 Oct 
Date Detail:
Created Date:  1999-11-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0243705     Medline TA:  J Exp Biol     Country:  ENGLAND    
Other Details:
Languages:  Eng     Pagination:  2693-9     Citation Subset:  -    
Affiliation:
Tuna Research and Conservation Center, Hopkins Marine Station, Stanford University, Oceanview Boulevard, Pacific Grove, CA 93950, USA, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA and Monterey Bay Aquarium Research Institute,
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