Resource selection and species interactions between native and non‐native fishes in a simulated stream system. (16th April 2022)

• Record Type: Journal Article
• Authors: Branigan, Philip R.; Quist, Michael C.; Shepard, Bradley B.; Ireland, Susan C.
• Is Part Of: Fisheries management and ecology. Volume 29:Number 5(2022)
• Page Start: 627
• Page End: 637
• Publication Date: 2022-04-16
• Subjects: experimental stream -- habitat selection -- habitat use -- laboratory flume -- resource partitioning -- videography; Fishery management -- Periodicals; Fishes -- Ecology -- Periodicals; Fishes -- Conservation -- Periodicals; 639.2
• DOI: 10.1111/fme.12552
• Languages: English
• ISSNs: 0969-997X

Abstract

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.