Fisheries, Subsistence, and Habitat
Publications Searchable Database
Search Again| Division: | Sport Fish |
| Title: | Control efforts for invasive northern pike on the Kenai Peninsula, 2008 |
| Author: | Massengill, R. L |
| Year: | 2014 |
| Report ID: | Alaska Department of Fish and Game, Special Publication No. 14-12, Anchorage |
| Abstract: | In 2000, an invasive population of northern pike was discovered in Arc Lake near Soldotna, Alaska, causing the closure of Alaska Department of Fish and Game (ADF&G) fish stocking at this lake. ADF&G treated Arc Lake with a liquid rotenone formulation in October 2008 to eradicate the northern pike population. After rotenone treatment, gillnets were fished in Arc Lake between December 2008 and May 2009 to evaluate the treatment’s success; no northern pike were captured. Water quality sampling in Arc Lake indicated similar water quality characteristics before and after treatment, except increased visibility the winter after treatment. Comparisons of zooplankton and macroinvertebrate presence between summer 2008 (before treatment) and 2009 (after treatment) indicated the invertebrate community remained similar, although some zooplankton species were far less common in posttreatment samples. In July and August of 2009, ADF&G restocked Arc Lake with coho salmon fingerlings. |
| Keywords: | Kenai Peninsula, Arc Lake, rotenone, northern pike, chemical treatment, restoration, invasive species, eradication, salmon stocking program |