Abiotic factors affecting summer distribution and movement of male paddlefish, Polyodon spathula, in a prairie reservoir
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Abstract
Six male paddlefish, Polyodon spathula, were implanted with ultrasonic temperature-sensing transmitters and tracked during June through August 1997 to quantify effects of physicochemical conditions on their distribution and movement in Keystone Reservoir, Oklahoma. Paddlefish moved about twice as much during night than day. Movement rate of paddlefish was related to reservoir water level, inflow, and discharge from the reservoir at night; however, none of these variables was significant during the day. Location in the reservoir (distance from the dam) was negatively related to water level and positively related to inflow during day and night periods. Location in the reservoir was negatively related to discharge during the day. Paddlefish avoided the highest available water temperatures, but did not always avoid low dissolved oxygen concentrations. Paddlefish avoided the Cimarron River arm of the reservoir in summer, possibly because of high salinity. Our study demonstrates that distribution of paddlefish during summer and movement in Keystone Reservoir was influenced by physicochemical and hydrologic conditions in the system. However, biotic factors (e.g., food availability) not measured in this study may have been influenced by abiotic conditions in the reservoir.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Abiotic factors affecting summer distribution and movement of male paddlefish, Polyodon spathula, in a prairie reservoir |
| Series title | Southwestern Naturalist |
| DOI | 10.2307/3672454 |
| Volume | 45 |
| Issue | 2 |
| Year Published | 2000 |
| Language | English |
| Contributing office(s) | Oklahoma Cooperative Fish and Wildlife Research Unit |
| Description | 8 p. |
| First page | 133 |
| Last page | 140 |
| Country | United States |
| State | Oklahoma |
| Other Geospatial | Arkansas River, Cimarron River, Keystone Reservoir |
| Google Analytic Metrics | Metrics page |