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518
<br />COMMENTS
<br />above the threshold for injury of large rainbow
<br />trout is true. Based upon our current research, we
<br />cannot accept the hypothesis that the electrotaxis-
<br />narcosis reaction can be induced in these fish at
<br />power levels below that which causes the muscular
<br />seizure leading to compression fractures of the
<br />spinal column. Consequently, we do not believe
<br />that reducing the operating power used during our
<br />original study would have significantly affected the
<br />rate of spinal injury that we reported.
<br />Reynolds and Kolz's recommendation that ad-
<br />ditional research into electrofishing-induced trau-
<br />ma repeats the intention of our original publica-
<br />tion. Only when the neuromuscular activity that
<br />causes this type of injury is completely understood
<br />can its importance be evaluated and equipment
<br />designed to eliminate or substantially reduce the
<br />trauma.
<br />NORMAN G. SHARBER
<br />STEVEN W. CAROTHERS
<br />Ichthyo Technologies
<br />Post Office Box 96
<br />Flagstaff, Arizona 86002, USA
<br />References
<br />Best, C. H., and N. B. Taylor. 1950. Physiological basis
<br />of medical practice. Williams and Wilkins, Balti-
<br />more, Maryland.
<br />Fling, V. L. 1981. Technical considerations of an elec-
<br />troconvulsive therapy apparatus. Pages 41-55 in
<br />Maletzky, editor. Multiple monitored electrocon-
<br />vulsive therapy. CRC Press, Boca Raton, Florida.
<br />Halsband, E. 1967. Basic principles of electric fishing.
<br />Pages 57-64 in R. Vibert, editor. Fishing with elec-
<br />tricity: its application to biology and management.
<br />Fishing News Books, Farnham, England.
<br />Haskell, D. C. 1954. Electrical fields as applied to the
<br />operation of electric fish shockers. New York Fish
<br />and Game Journal 1:130-170.
<br />Hauck, F. R. 1949. Some harmful effects of the elec-
<br />troshocker on large rainbow trout. Transactions of
<br />the American Fisheries Society 77:61-64.
<br />Lamarque, P. 1967. Electrophysiology of fish subject
<br />to the action of an electric field. Pages 65-71 in R.
<br />Vibert, editor. Fishing with electricity: its applica-
<br />tion to biology and management. Fishing News
<br />Books, Farnham, England.
<br />Novotny, D., and G. R. Priegel. 1974. Electrofishing
<br />boats. Wisconsin Department of Natural Resources
<br />Technical Bulletin 73.
<br />Sharber, N. G., and S. W. Carothers. 1988. Influence
<br />of eectrofishing pulse shape on spinal injuries in
<br />adult rainbow trout. North American Journal of
<br />Fisheries Management 8:117-122.
<br />Stemin, V. G., 1. V. Nikonorov, and Yu K Bumeister.
<br />1972. Electrical fishing. Pishchevaya Promyshlen-
<br />nost', Moskva. Translated from Russian by E. Vi-
<br />lim, Israel Program for Scientific Translations, 1976,
<br />Jerusalem.
<br />Vibert, R., editor. 1967. Fishing with electricity: its
<br />application to biology and management. Fishing
<br />News Books, Farnham, England.
<br />ERRATA
<br />i
<br />Please make the following changes in Volume 8(3), Summer 1988: "Comparison of
<br />Detonating Cord and Rotenone for Sampling Fish in Warmwater Impoundments," by
<br />Peter B. Bayley and Douglas J. Austen, pages 310-316.
<br />Page 310, Abstract, line 5, and page 311, column 2, line 13: delete the words "active
<br />ingredient."
<br />The concentration of 3 mg/L refers to the formulation in water, not to rotenone itself.
<br />The formulation contained 2.5% rotenone plus 2.5% of the rotenone synergist, pi-
<br />peronyl butoxide.
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