Effects of capture depth on walleye hooking mortality during ice fishing
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Abstract
Length-based regulations are a common tool used to limit fishing mortality by controlling the size of fish harvested. While such regulations are helpful in managing fish populations, mortality associated with catch-and-release fishing may negatively impact a fishery. We evaluated factors affecting hooking mortality of walleye (Sander vitreus) in 2 mainstem Missouri River reservoirs in South Dakota. Winter walleye hooking mortality was evaluated during the ice fishing season in February and March 2020. After capture, walleye (n = 55) were placed into holding pens for 12 to 72 h to monitor postrelease mortality. Hooking mortality was found to be 20% following angling. Capture depth, landing time, and time in pen were the most influential variables on probability of hooking mortality (pm). We observed a sharp increase in pm for walleye captured at depths from 10 to 12 m, where the probability of mortality for fish increased appreciably from 5 to 37%, respectively. Our findings indicate that hooking mortality during the ice fishing season can be substantial in lakes where walleye angling occurs at depths greater than 10 m.
Suggested Citation
Lyon, C., Davis, J., Fincel, M.J., Chipps, S.R., 2022, Effects of capture depth on walleye hooking mortality during ice fishing: Lake and Reservoir Management, v. 38, no. 4, p. 334-340, https://doi.org/10.1080/10402381.2022.2130118.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effects of capture depth on walleye hooking mortality during ice fishing |
| Series title | Lake and Reservoir Management |
| DOI | 10.1080/10402381.2022.2130118 |
| Volume | 38 |
| Issue | 4 |
| Publication Date | November 12, 2022 |
| Year Published | 2022 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Coop Res Unit Leetown |
| Description | 7 p. |
| First page | 334 |
| Last page | 340 |
| Country | United States |
| State | South Dakota |
| Other Geospatial | Lake Oahe, Lake Sharpe |