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- Title
Using angling and electric fishing to estimate smallmouth bass abundance in a river.
- Authors
Mycko, S. A.; Kanno, Y.; Bettinger, J. M.
- Abstract
Abstract: Estimating abundance is fundamental to effective fishery management but can be challenging in a river where spatial and temporal heterogeneity may preclude the consistent use of a single sampling gear and different gears have differing size selectivity and capture probabilities of fish. In this study, the number of smallmouth bass, <italic>Micropterus dolomieu</italic> Lacepède, was estimated based on mark–recapture data from angling and boat electric fishing in a 4.2‐km regulated section (mean width = 115 m) of the Broad River, South Carolina, USA. Closed‐population capture–mark–recapture models were fit in the Bayesian hierarchical modelling framework with an estimated number of 2,380 fish (95% credible interval: 1,578–3,693) over 200 mm TL, although simulations indicated that abundance would be slightly overestimated (<20%) when two gears selected for different individuals. Integrating two gear types into a mark–recapture study can provide a method for assessing abundance in spatially or temporally heterogeneous habitats.
- Subjects
SMALLMOUTH bass fishing; ELECTRIC fishing; RIVER ecology; MARK &; recapture (Population biology); FISH habitats
- Publication
Fisheries Management & Ecology, 2018, Vol 25, Issue 1, p77
- ISSN
0969-997X
- Publication type
Article
- DOI
10.1111/fme.12269