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

Megan Schall, Timothy Wertz, Geoffrey D. Smith, Vicki S. Blazer, Tyler Wagner

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish (US)
JournalFisheries Management and Ecology
DOIs
StatePublished - Jan 1 2019

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Micropterus dolomieu
tributary
rivers
river
fish
overwintering
population dynamics
tagging
spawning
life history
connectivity
habitats
habitat

All Science Journal Classification (ASJC) codes

  • Aquatic Science
  • Ecology

Cite this

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title = "Movement dynamics of smallmouth bass (Micropterus dolomieu) in a large river-tributary system",
abstract = "Smallmouth bass, Micropterus dolomieu Lacep{\`e}de, 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.",
author = "Megan Schall and Timothy Wertz and Smith, {Geoffrey D.} and Blazer, {Vicki S.} and Tyler Wagner",
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Movement dynamics of smallmouth bass (Micropterus dolomieu) in a large river-tributary system. / Schall, Megan; Wertz, Timothy; Smith, Geoffrey D.; Blazer, Vicki S.; Wagner, Tyler.

In: Fisheries Management and Ecology, 01.01.2019.

Research output: Contribution to journalArticle

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AU - Wertz, Timothy

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AU - Wagner, Tyler

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