On October 22nd we welcomed LLAA members to our Q&A on Zebra Mussels with Nicole Kovar, the Northwest Region Invasive Species Specialist. She has been in this role since 2014 in the MN DNR Ecological and Water Resources Division.
Nicole received her bachelor's degree in Fisheries and Wildlife Management from Michigan State University in East Lansing. Prior to becoming an invasive species specialist, Nicole worked for the MN DNR Wildlife Section for nine years in the shallow lakes program monitoring and managing aquatic habitat to benefit waterfowl and other wildlife.
Nicole and her colleague Mark Ranweiler, an invasive species specialist from the Fergus Falls DNR office, used scuba gear to confirm adult zebra mussels at the south access here on Long Lake.
Thank you, Nicole for sharing your expertise with us in our Q & A session.
Below is a follow up letter from Nicole answering 4 questions asked by participants of the webinar
It’s always my pleasure and I’m very glad it’s useful! Let me know anytime you’d need something similar done again.
can be found more readily through online sellers. The type used are
poly or nylon mesh bag filters (sock filters) that could be fitted right
over the metal screen on the intake. The size micron bags recommended
are between 25 and 40 micron. The earlier life stage of the mussels
(1-2 days called trocophores) are 40 microns small. A 25 micron filter
has been shown effective to block most veligers
in trials. The higher number of micron the “harder” the draw on the
irrigation pump so a person should keep that in mind. 25 might be the
best compromise between filtering capability and ease to the pump. If
the filter makes the pump fail, there’s no sense
to blocking the ZEB that may make the pump fail. Here is an example:
2. This link https://www.dnr.state.mn.
Please let me know if any additional questions come up.
Best and Be well!Nicole