Businesses use underwater noise, farming to lure invasive carp

LA CROSSE, Wisconsin – Wildlife managers on the Wisconsin-Minnesota border are utilizing a brand new methodology to trace and seize invasive carp species.

What would you prefer to know

  • Invasive carp populations within the Mississippi River have elevated

  • A number of businesses use new methodology to gather and lure fish

  • That is the primary time this methodology has been utilized in Wisconsin or Minnesota

  • Invasive fish take sources from natives and may deplete populations

The invasive carp, silver carp and bighead carp, have elevated in populations within the Mississippi River lately.

“Principally, these carp are going to displace a few of our native fish,” mentioned Jordan Weeks, who’s a part of the Mississippi River Fishing Crew for the Wisconsin Division of Pure Assets.

The WDNR, the Minnesota DNR, the US Geological Survey, and the US Fish and Wildlife Service all work collectively to trace and eradicate invasive fish. To do that, they use a brand new methodology referred to as a modified unified methodology.

“That is the primary time the method has been utilized in Minnesota or Wisconsin waters,” mentioned Randy Hines, wildlife biologist and USGS outreach coordinator.

The tactic is tailored from Southeast Asian fishing practices, the place industrial fishermen will use sounds underwater to herd carp – native to this a part of the world – and use nets to herd them in areas smaller after which lure them there.

The boat crews began working the week of April 5 and can work for 2 weeks.

“We weren’t planning on catching a ton of these silver, bighead carp, the primary two days we caught zero, yesterday we ended up catching 29,” Weeks mentioned. “Ideally, it could be good if we did not catch any.”

The carp they catch will go to a USFWS lab for analysis.

“The earlier you can begin controlling this to maintain it from shifting even additional north up the river, the higher,” mentioned Hallie Rasmussen, customer providers supervisor at Higher Mississippi River Nationwide Wildlife and Fish Refuge. .

The refuge helps stop components of the river from being entertained whereas the crews are working.

The collaborative effort amongst all businesses addresses each the issue of invasive carp within the Mississippi River, however as a result of the strategy is so new, additionally it is an academic alternative.

“This is a chance for the USGS to show and instruct state and federal businesses within the area methods to use this method,” ​​Hines mentioned. “The last word purpose is to offer a further instrument within the fisheries administration toolbox.”

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