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Movement dynamics of smallmouth bass (Micropterus dolomieu) in a large river-tributary system

August 26, 2021

Smallmouth bass, Micropterus dolomieu Lacepède, movement dynamics were investigated in a connected mainstem river-tributary system. Smallmouth bass moved large distances annually (n = 84 fish, average = 24.6 ± 25.9 km, range = 0.03 to 118 km) and had three peak movement periods (pre-spawn, post-spawn and overwintering). Movement into and out of tributaries was common, but the movement between mainstem river and tributary habitats varied among tagging locations and season. In general, a large proportion of fish that were tagged in tributaries moved out of the tributaries after spawning (22/30 fish). Because of the importance of fish movement patterns on population dynamics, the observed individual variability in movement, quantified using a hierarchical model, and the potential for long-distance movements are important considerations for smallmouth bass conservation and management. In addition, mainstem river-tributary connectivity appears to play an important role for smallmouth bass during key life history events.

Citation Information

Publication Year 2019
Title Movement dynamics of smallmouth bass (Micropterus dolomieu) in a large river-tributary system
DOI 10.1111/fme.12369
Authors Tyler Wagner, Megan K. Schall, Timothy Wertz, Geoffrey D. Smith, Vicki S. Blazer
Publication Type Article
Publication Subtype Journal Article
Series Title Fisheries Management and Ecology
Index ID 70223407
Record Source USGS Publications Warehouse
USGS Organization Coop Res Unit Leetown