Benzocaine as a fish anesthetic: efficacy and safety for spawning-phase salmon
Progressive Fish-Culturist
Abstract has subscript/superscript to be fixed
By: P.A. Gilderhus
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Abstract
The anesthetic benzocaine was tested for efficacy and safety for spawning-phase chinook salmon (Oncorhynchus tshawytscha) and Atlantic salmon (Salmo salar) at federal fish hatcheries. Tests were conducted in the existing hatchery water supplies (soft water; temperatures, 10–13 °C. Crystalline benzocaine was dissolved in ethanol (1 g/30 mL), and aliquots of that stock solution were added to the water in test tanks. Benzocaine concentrations of 25–30 mg/L anesthetized most fish in less than 3.5 min, and most fish recovered in less than 10 min after 15 min of exposure. Safety margins were narrow; both species tolerated 30 mg/L for about 20 min, but 25 min of exposure caused deaths. For 15 min exposures, concentrations of 35 mg/L for chinook salmon and 40 mg/L for Atlantic salmon were lethal.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Benzocaine as a fish anesthetic: efficacy and safety for spawning-phase salmon |
| Series title | Progressive Fish-Culturist |
| DOI | 10.1577/1548-8640(1990)052<0189:BAAFAE>2.3.CO;2 |
| Volume | 52 |
| Issue | 3 |
| Year Published | 1990 |
| Language | English |
| Publisher | Taylor & Francis |
| Publisher location | Philadelphia, PA |
| Contributing office(s) | Upper Midwest Environmental Sciences Center |
| Description | 3 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Progressive Fish-Culturist |
| First page | 189 |
| Last page | 191 |
| Google Analytic Metrics | Metrics page |