Mortality of experimentally descaled smolts of coho salmon (Oncorhynchus kisutch) in fresh and salt water
Transactions of the American Fisheries Society
By: Gerald R. Bouck and Stanley D. Smith
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Abstract
Removal of slime from 25% of the body caused no deaths among smolts of coho salmon in fresh water or in seawater (28‰). Removal of slime and scales from the same percentage of body area caused no deaths in fresh water, but 75% mortality within 10 days in seawater. The 10-day median tolerance limit was 10% scale removal immediately before the smolts entered seawater. Mortality was highest when the scales were removed from the area of the rib cage. Recovery of smolts in fresh water from a loss of scales that would be lethal in seawater occurred rapidly; 90% of the fish regained tolerance to seawater within 1 day.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Mortality of experimentally descaled smolts of coho salmon (Oncorhynchus kisutch) in fresh and salt water |
| Series title | Transactions of the American Fisheries Society |
| DOI | 10.1577/1548-8659(1979)108<67:MOEDSO>2.0.CO;2 |
| Volume | 108 |
| Issue | 1 |
| Year Published | 1979 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Western Fisheries Research Center |
| Description | 3 p. |
| First page | 67 |
| Last page | 69 |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |