Impacts of Northern Pike on Stocked Rainbow Trout in Pactola Reservoir, South Dakota
| Autor: | Jacob L. Davis, Natalie C. Scheibel, Daniel J. Dembkowski, Steven R. Chipps |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
education.field_of_study Osmerus Ecology biology 010604 marine biology & hydrobiology Population Management Monitoring Policy and Law Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Predation Rainbow smelt Fishery Abundance (ecology) Rainbow trout education computer Ecology Evolution Behavior and Systematics Esox Pike computer.programming_language |
| Zdroj: | North American Journal of Fisheries Management. 36:230-240 |
| ISSN: | 1548-8675 0275-5947 |
| Popis: | Establishment of nonnative Northern Pike Esox lucius in Pactola Reservoir, South Dakota, has prompted concern among biologists about the influence of this species on the lake’s intensively managed salmonid fisheries. Ancedotal information suggests that catch rates of Rainbow Trout Oncorhynchus mykiss have declined while mean size and abundance of Northern Pike has increased, although quantitative information on diet and growth of the Northern Pike population is lacking. To address potential interactions between Northern Pike and Rainbow Trout, we assessed size-dependent predation by Northern Pike on Rainbow Trout and determined the relative energetic contribution of stocked Rainbow Trout to Northern Pike growth using bioenergetics modeling. Stable isotopes combined with traditional diet analyses revealed that smaller Northern Pike ( |
| Databáze: | OpenAIRE |
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