Off-channel habitat use by silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) in the upper Mississippi River
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Abstract
The spread of invasive carp in the Mississippi River Basin of the U.S. has caused substantial ecological and economic problems. Although there are a variety of strategies to manage invasive carp, removal remains a central part of many efforts. To be most effective, large-scale removal of invasive carp should target fish when they are densely aggregated in locations with favorable conditions for deploying fishing gear. We used acoustic telemetry to track off-channel habitat use by silver carp Hypophthalmichthys molitrix and bighead carp H. nobilis in backwaters and impounded areas across three navigation pools of the upper Mississippi River to identify factors associated with high densities. Backwater areas generally had high use when temperatures were warm and river discharge was high, and impounded areas generally had high use when temperatures were cooler and discharge was lower. Models of habitat use suggest silver carp and bighead carp show predictable habitat relationships in off-channel areas that could improve removal efficiency.
Suggested Citation
Milde, A.S., Gibson-Reinemer, D.K., Larson, J.H., Vallazza, J.M., Mosel, K.J., Bailey, S., Knights, B.C., and Fritts, A.K., 2025, Off-channel habitat use by silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) in the upper Mississippi River: River Research and Applications, v. 41, no. 10, p. 2234-2247, https://doi.org/10.1002/rra.70043.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Off-channel habitat use by silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) in the upper Mississippi River |
| Series title | River Research and Applications |
| DOI | 10.1002/rra.70043 |
| Volume | 41 |
| Issue | 10 |
| Publication Date | September 15, 2025 |
| Year Published | 2025 |
| Language | English |
| Publisher | Wiley |
| Contributing office(s) | Upper Midwest Environmental Sciences Center |
| Description | 14 p. |
| First page | 2234 |
| Last page | 2247 |
| Country | United States |
| State | Illinois, Iowa, Missouri |
| Other Geospatial | upper Mississippi River |