Factors influencing successful eradication of nonnative brook trout from four small Rocky Mountain streams using electrofishing
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Abstract
We successfully eradicated nonnative Brook Trout Salvelinus fontinalis by electrofishing from 2.4- to 3.0-km treatment reaches of four Rocky Mountain streams in Montana to conserve sympatric populations of native Westslope Cutthroat Trout Oncorhynchus clarkii lewisi. At least 6, and as many as 14, removal treatments of two to four electrofishing passes per treatment were required to successfully eradicate Brook Trout from these treatment reaches. We increased success by modifying our treatment efforts during this study from single annual treatments to several treatments a year to take advantage of autumn spawning and winter aggregating behavior. Eradication by electrofishing cost US \$3,500 to \$5,500 per kilometer where no riparian vegetation or woody debris clearing was necessary, increasing to \$8,000 to \$9,000 per kilometer where clearing was needed. Treatment costs without stream clearing were similar to costs of eradication using piscicides. Eradication by electrofishing may be preferable where native fish occur in sympatry with nonnative fish in smaller streams (base flow wetted widths
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Factors influencing successful eradication of nonnative brook trout from four small Rocky Mountain streams using electrofishing |
| Series title | North American Journal of Fisheries Management |
| DOI | 10.1080/02755947.2014.942042 |
| Volume | 34 |
| Issue | 5 |
| Year Published | 2014 |
| Language | English |
| Publisher | American Fisheries Society |
| Contributing office(s) | Coop Res Unit Seattle |
| Description | 10 p. |
| First page | 988 |
| Last page | 997 |
| Country | United States |
| State | Montana |
| Other Geospatial | Cottonwood Creek, Craver Creek, Muskrat Creek, Spring, Staubach Creek, Whites Creek, Upper Missouri River basin |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |