Fishing – trapping – and vermin destroying – Fishing – Electric current or sonic wave energy
Patent
1993-08-31
1994-07-12
Bradley, P. Austin
Fishing, trapping, and vermin destroying
Fishing
Electric current or sonic wave energy
43 45, A01K 7902
Patent
active
053276680
ABSTRACT:
To minimize injury during electrofishing while inducing a high degree of electrotaxis, a packet of DC pulses having sharp leading edges and preferably an exponential or square decay are transmitted under water between an anode electrode and a cathode electrode several times each second to stimulate contraction of the red muscle tissues and bring about electrotaxis without inducing epileptic seizure of the white muscle tissues of fish and thereby avoiding injury to the fish. The power level of transmission is reduced between the packets.
REFERENCES:
patent: 4750451 (1988-06-01), Smith
patent: 4825810 (1989-05-01), Sharber
Smith-Root product description, pp. 4 and 9, Models GFFB-1.5-U and GFFG-0.5-D. Sep. 1987.
Smith-Root brochure Electric Fish Barriers and Guidance Systems, Feb. 1989, pp. 1-11, details of Models GFFB-1.5-U, GFFG-0.5-D, and GFFB-4.0-U.
Sharber, N. G. et al., "Electrofishing-Induced Spinal Injury in Rainbow Trout", Flagstaff, Icthyo Technologies, 1989, pp. 1-11.
Sharber, N. G. et al., North American Journal of Fisheries Management, vol. 8, No. 1, "Influence of Electrofishing Pulse Shape on Spinal Injuries in Adult Rainbow Trout", Winter 1988, pp. 117-122.
Reynolds, James B. et al., North American Journal of Fisheries Management, vol. 8, 1988, "Comments", pp. 516-518.
Sharber, N. G. et al., North American Journal of Fisheries Management, vol. 7, "Submerged, Electrical Shielded Live Tank for Electrofishing Boats", 1987, pp. 450-453.
Reynolds, James B. et al., Fish and Wildlife Technical Report No. 22, "Electrofishing, A Power Related Phenomenon", Washington, D.C., 1989.
Anchorage Daily News, Sunday, May 29, 1988, "State Zaps Spring Plans for Tagging Kenai Rainbows", p. D5, by Craig Medred.
ed. R. Vibert, "Fishing With Electricity", commissioned by European Inland Fisheries Advisory Board, published by Fishing News (Books), Ltd., 1967, pp. 1-64.
Sharber John P.
Sharber Norman G.
Bradley P. Austin
Coffelt Manufacturing, Inc.
Miner James
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