In situ experiments with coastal pelagic fishes to establish design criteria for electrical fish harvesting systems
Seidel, W.R.; Klima, E.F. (1974). In situ experiments with coastal pelagic fishes to establish design criteria for electrical fish harvesting systems. Fish. Bull. 72(3): 657-669
In: Fishery Bulletin. US Government Printing Office: Washington, D.C.. ISSN 0090-0656; e-ISSN 1937-4518, more
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| Abstract |
In situ experiments to test the efficacy of a scale electrical harvesting system were conducted off Panama City, Fla. with both captured and wild coastal pelagic fishes. Six species of fish wereexposed to preselected combinations of pulse rate, pulse width, and voltage by either attracting wild fish or placing captured fish between electrodes. Both captured and wild fish could be effectively controlled with a minimum field strength of 15 Vim, 20 to 35 pulses/s, and a pulse width of more than 0.5 ms. Voltage, pulse width, and pulse rate were equally important for controlling the species tested. Based on these results, resistance measurements were calculated and a potentialnetless harvesting system specified which would require a minimum energy output of 120 kVA dissipated into an electrode configuration 10 x 5 x 5 m with a load resistance of 0.01558 ohms. The basic design specifications for a prototype pulse generator are provided for netless fish harvesting applications and mid-water trawling. |
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