Anglers Can Prevent Spread of AIS

Anglers Can Prevent Spread of AIS
The invasive spiny water flea is raising concern in some Wisconsin lakes and rivers, as it spreads via fishing gear and disrupts aquatic ecosystems by consuming zooplankton, a key food source for native species. (Photo by NOAA Great Lakes Environmental Research Laboratory, 2721, CC BY-SA 2.0.)

With summer upon us and fishing season in full swing, anglers of all types are reminded to do their part to help prevent the spread of aquatic invasive species (AIS) by draining water from their boats and equipment this summer.

The first full weekend of June not only is celebrated with the Wisconsin DNR's Free Fun Weekend June 7-8, but also with the Clean Boats, Clean Waters (CBCW) annual Drain Campaign from June 6-8. The campaign focuses on the importance of boaters and anglers draining water from their livewells, boats and equipment before leaving boat launches and fishing access points.

"Unfortunately, some of our Wisconsin lakes and rivers are known to contain aquatic diseases or small invasive species like spiny water fleas and zebra mussel larvae. Wisconsin has various laws in place to prevent the introduction and control the spread of aquatic invasive species and diseases in Wisconsin," said Erin McFarlane, Statewide Clean Boats, Clean Waters educator, UW-Stevens Point Extension Lakes.

Wisconsin law requires boaters and anglers to drain livewells, motors and containers before leaving a boat launch or fishing spot to prevent the transport of diseases and invasive species from one waterbody to the next. Since water cannot be used to transport fish away from the shore, it's recommended to use ice instead.

"If you are using live bait, Wisconsin fishing regulations state that minnows can only be purchased from a licensed Wisconsin bait dealer, and no more than two gallons of water may be used to transport them. Minnows may only be used on a different waterbody if no lake or river water or previously used minnows have been added to the container," McFarlane noted.

"No other fish can be held in the minnow container, and dead bait must be preserved in ways that do not require freezing or refrigeration. Never dispose of unwanted bait in a lake or river. If you have worms that you will not use before they die, dispose of them in a closed container in the trash, never on the ground," she said.

Before and after casting a line, anglers can protect fishing future by doing their part to prevent the spread of AIS. McFarlane reminds fishermen to inspect all fishing equipment for attached aquatic plants, animals or mud, and remove any attached plants or animals.

She also urges those on the water to drain all water from containers and equipment, and to never move live fish away from a waterbody. All unwanted bait should be disposed of in the trash.