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blakjack23

Weather blamed in death of muskies in Lake Rebecca

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Weather blamed in death of muskies in Lake Rebecca

Thirty muskies up to 3 feet long were recently found dead in Lake Rebecca near Rockford in western Hennepin County.

Thirty muskies up to 3 feet long were recently found dead in Lake Rebecca near Rockford in western Hennepin County.

The muskies are part of a population of broodstock used by the Department of Natural Resources in its statewide muskie stocking program.

The fish, 32 to 36 inches long and 4 to 5 years old, were victims of "summerkill" - caused by the depletion of oxygen in the water because of warm summer temperatures.

"Summerkill is not an infrequent thing in the dog days of summer," said Dirk Peterson, DNR regional fisheries manager. The bay the fish were found in was only about 11/2 feet deep.

"With the high water temperatures, the oxygen likely depleted overnight, and the fish didn't know how to escape," Peterson said. The DNR also found eight dead bluegills and six dead largemouth bass.

Oxygen depletion increases at night, sometimes causing fish to suffocate. The lake's oxygen levels also might have been negatively affected by recent heavy rainfalls. Large amounts of denser, cooler rainwater can sometimes suddenly displace and spread deoxygenated bottom water to areas that previously allowed fish survival.

The DNR captures muskie broodstock in nets each spring from Lake Rebecca and removes eggs and sperm from them to produce muskies in state hatcheries. About 30,000 muskies are stocked annually in lakes around the state.

The loss of the 30 muskies -- about 25 to 30 percent of the broodstock in the lake -- was unfortunate but shouldn't affect the DNR's muskie-stocking program, Peterson said. If needed, the DNR can get eggs from adult muskies in other lakes.

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frown.giffrown.giffrown.gif

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does that mean that maybe the crappies will boom? grin.gif

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Sad, but things happens...

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  • Posts

    • knoppers
      with the current weather and the forcast for next week, we should have great ice by next weekend. be safe out there this weekend, ice just took hold on smaller lakes, the wind has kept things uneven.
    • kunzi26
      Down visiting in southern WI with family and our neighbors just watched someone go through ice and drown on a small lake near Lake Geneva. Everyone please be careful when checking ice! 
    • eyeguy 54
      these are pests. not game.  
    • Mike89
      ok, but waste not want not is how I was raised.  I also know what you mean by thinning the heard!
    • LunkerLover84
      Has anybody gotten a look at area lakes? Any of them locked up yet ? A buddy said he seen a couple guys a little ways out on Bakers Bay and a couple guys on Eagle. Seems a little crazy to me. There can't be much more than an inch or two. Maybe a little more on Eagle since its shallower.