Home » Tag Archives: rotenone

Tag Archives: rotenone



Last week I had a boring blog post about fisheries science.  It was a fundamental description of what a “fishery” is and how pointy-headed biologists manage fisheries.  Part of the reason I posted that was because I wanted to lay some ground work for additional posts about other fisheries management topics.  So, let me reconvene the Fisheries Science 101 class again today and talk about a subject that I believe is misunderstood by some. . . renovations. Let me start …

Read More »

Rotenone to remove common carp in Pelican Lake renovation

LINCOLN, Neb. – Rotenone will be applied Sept. 6 at Pelican Lake on the Valentine National Wildlife Refuge (NWR) south of Valentine to remove common carp. The Nebraska Game and Parks Commission and U.S. Fish and Wildlife Service (USFWS) will apply rotenone, which is a toxicant often used by biologists to eliminate unwanted fish species, as part of the renovation of the lake. In recent months, liberalized fishing regulations have allowed anglers to remove many sport fish from Pelican, and …

Read More »

Gizzard shad targeted for removal from Wehrspann Lake

LINCOLN – The chemical rotenone has been applied at Omaha’s Wehrspann Lake in order to remove gizzard shad. Gizzard shad are susceptible to a low dose of rotenone while fish such as largemouth bass, bluegill, channel catfish and crappie are less affected. Low dosages of rotenone are done at low water temperatures to increase its effectiveness on shad and lower impacts on nontarget species. “Gizzard shad are targeted for removal because they are a detrimental species in small reservoirs such …

Read More »

Lake Yankton Renovation, Postscript

A couple of weeks ago I blogged about the Lake Yankton Renovation.  That fisheries management project went off on schedule last week in spite of cool and rainy conditions.   Right now I want to show you a few pictures of dead fish because it demonstrates exactly why we do rotenone renovations, why we eliminate all fish in a body of water, and then re-stock. It is somewhat ironic that fisheries biologists would purposely, intentionally kill fish, but that is …

Read More »

Lake Yankton Renovation

There was a news release on the Lake Yankton rotenone renovation a couple of weeks ago: Lake Yankton Fishery Renovation Set to Begin Posted by: Jerry Kane August 12, 2014 in NGPC News LINCOLN – A renovation of the existing fish population in Lake Yankton, located below Gavins Point Dam, is set to occur on Sept. 10. The project includes drawing Lake Yankton’s water level down four feet and applying the chemical rotenone to eliminate the fish population. Record Missouri River flooding in 2011 allowed …

Read More »

Pawnee Renovation

A few weeks ago there was a news release about a fisheries management project being conducted at Pawnee Reservoir west of Lincoln: LINCOLN – A chemical was applied at Pawnee Lake in an attempt to remove unwanted white perch and gizzard shad from the fish population, according to the Nebraska Game and Parks Commission. Rotenone typically is used to eliminate all fish from a body of water; however, a lower concentration of the chemical was applied Nov. 12-13 at Pawnee …

Read More »

Willow Lake Renovation

Last week our fisheries personnel along with help from a bunch of other folks applied rotenone to Willow Lake (the Willow Lake in Brown County).  Willow Lake has been an excellent largemouth bass and panfish fishery over the years, but recently has been dominated by black bullheads and common carp.  Those species not only are less desirable to anglers, they also degrade water quality and habitat and are a detriment to all other fish species.  When that happens the quickest …

Read More »

Blinded Me With Science, July 22, 2013

Cue the theme music. . . . She Blinded Me with Science by Thomas Dolby It has been almost three years ago that I went into some detail about the fisheries renovation that was done on the west lake at our Mormon Island State Recreation Area,( http://www.outdoornebraska.ne.gov/parks/guides/parksearch/showpark.asp?Area_No=123 ), http://magazine.outdoornebraska.gov/2010/08/rotenone-renovation/ .  What I want to share with you here is a paper that documents the fisheries science behind a rotenone renovation, http://digitalcommons.unl.edu/tnas/418/ .  If you wish you can download the entire paper, …

Read More »