My DNR believes they are native due to the fact they are native in similar lakes in southern Michigan, but they provide no documentation to verify that. Furthermore there was a commercial gill net fishery that gillnetted and sold them, and it is well known the fisherman transplanted them to gravel pits to continue to have fish to net. Therefore it is possible they could have also been moved down from Michigan.
If anyone knows where I can look to answer this question it would be greatly appreciated. I could also be willing to hire someone to research this for me if it's not too terribly expensive.
Edited by az9, 19 October 2011 - 06:06 AM.