Resource selection and species interactions between native and non-native fishes in a simulated stream system
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Abstract
Effective fishery management necessitates understanding of resource partitioning by fishes that inhabit complex systems composed of biotic and abiotic features. Evaluations of non-native species introductions have continually demonstrated adverse effects associated with abundance and distribution of native fishes. Therefore, understanding resource selection and interactions between native and non-native species is important for recovery efforts. Habitat use by two native fish species (largescale sucker Catostomus macrocheilus [Girard] and mountain whitefish Prosopium williamsoni [Girard]) and one non-native fish species (pumpkinseed Lepomis gibbosus [Linnaeus]) of the Kootenai River, Idaho, were evaluated in a laboratory stream system. Trials were conducted in allopatry and in sympatry with and without the presence of wood to describe habitat selection in the context of on-going habitat rehabilitation efforts. Interactions were evident between native largescale sucker and non-native pumpkinseed concerning use of a woody structure and current velocity. Mountain whitefish used low-velocity habitats and selected locations that were further from wood when in sympatry with pumpkinseed. Our research suggests that habitat use of native, large-river fishes may be influenced by the presence of a non-native species, and that considering such interactions is critical when designing and implementing habitat rehabilitation efforts in river ecosystems.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Resource selection and species interactions between native and non-native fishes in a simulated stream system |
| Series title | Fisheries Management and Ecology |
| DOI | 10.1111/fme.12552 |
| Volume | 29 |
| Issue | 5 |
| Publication Date | April 16, 2022 |
| Year Published | 2022 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Coop Res Unit Seattle |
| Description | 11 p. |
| First page | 627 |
| Last page | 637 |