Update: 2022 Spiny Waterflea Findings in Lake Winnebago
Additional Monitoring Reveals No Other Spiny Waterfleas
Following up from a spiny water flea finding in Lake Winnebago in 2022, the WI Department of Natural Resources and local partners conducted extensive monitoring for spiny water fleas through the summer and fall of 2022. Biologists were searching for additional adult spiny waterfleas as well as eggs that would have 
been laid in the sediment of the lake. Following analysis of the samples collected, we are please to report that no evidence of spiny waterflea were found which includes not finding any eggs!
This is fantastic news for our waterways! Currently, there is no evidence that the spiny waterfleas found in 2022 were able to establish a population in Lake Winnebago. Ongoing monitoring by UW-Green Bay as part of the Fox River Navigational System Authority (FRNSA) AIS Monitoring Program will continue to keep an eye out for spiny waterflea and other invasive species.
Remember- an ounce of prevention is worth a pound of cure. It’s easy to help prevent the spread of all aquatic invasive species between lakes. No matter what lake or river you visit, follow these steps to protect your wild places:
Spiny waterflea on a fingertip
· Inspect equipment (boats, fishing line, etc.) for attached aquatic plant, animals, or mud
· Remove all attached plants or animals
· Drain all water from buckets and containers
· Never move live fish away from a waterbody (fish out of water = dead)
Photo Credit: Riley Schultz (UWGB), WI Sea Grant, Donn Brandstrator (UM-Duluth), Chris Acy
Questions? Comments? Contact Chris Acy, the AIS Coordinator covering Brown, Outagamie, Fond du Lac, Calumet, and Winnebago Counties at (920) 460-3674 or chris@fwwa.org!
Follow the Fox Wolf Watershed Alliance’s Winnebago Waterways Program on our Winnebago Waterways Facebook page or @WinnWaterways on Twitter! You can also sign-up for email updates at WinnebagoWaterways.org.
Winnebago Waterways is a Fox-Wolf Watershed Alliance program. The Fox-Wolf Watershed Alliance is an independent nonprofit organization that identifies and advocates effective policies and actions that protect, restore, and sustain water resources in the Fox-Wolf River Basin.
Check out the Keepers of the Fox Program at https://fwwa.org/watershed-recovery/lower-fox-recovery/
Reporting invasive species is a first step in containing their spread. Maintaining and restoring our waters and landscapes can reduce the impacts even when we don’t have other management options to an invasive species.
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Fox-Wolf Watershed Alliance
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Attention Master Gardeners, Master Naturalists, Garden Club Members and others advising home gardeners; this webinar is for you! Representatives from UWEX and DNR will join Melinda Myers to talk about current threats, available resources and ways we can all work together to manage invasive plants. To register for the free webinar, click the button below!
Fond du Lac’s Lakeside Park. The Trash Free Waters program engaged vistors with a “Cleanup Bingo” activity, where volunteers were given a reusable cleanup bingo card, trash grabbers, gloves, and a trash bag, and they set off to clean up litter in the park–hoping to get a “bingo” on their cards. Once they found a trash item from any horizontal, diagonal, or vertical line on the card, the volunteers returned to the Fox-Wolf booth to collect a prize item for their efforts. We underestimated the level of excited volunteers would have in taking on this activity, and quickly ran out of prize items after only a couple of hours.
kelly@fwwa.org
920-915-1502
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