I just watched a very good documentary on the history of sea lamprey and how they became a parasitic problem in the Great Lakes. It's on Amazon Prime and called "The Fish Thief: A Great Lakes Mystery".

WTIP posted an article last year about current lamprey issues in MN rivers that are close to or are in the BWCA.
https://wtip.org/sea-lamprey-discovered-in-more-north-shore-rivers-as-reports-of-the-invasive-species-increase-in-parts-of-lake-superior/

Are these parasites invading BWCA waters? Has anyone seen evidence of them on caught fish? What are your thoughts on the use of TFM (3-trifluoromethyl 4-nitrophenol) and it's yet to be thoroughly investigated effect on humans. Eager to hear replys.

I don't think they can get beyond the dams on the St. Louis river.

Sea Lamprey are not found in any inland lake,we do have the Silver lamprey which I have seen in Quetico. They are parasitic as a adult,but usually do not cause yhe death to fish like the sea lamprey. silver lamprey-their ugly and slimy

Yet they found there way around Niagara Falls. Through time they have found a way. I'm just curious if its a current or potential issue.

lamprey

LOL on the beer recipe.

okinaw55: "Yet they found there way around Niagara Falls. Through time they have found a way. I'm just curious if it's a current or potential issue."

They bypassed Niagara via the Welland Canal.

Okinaw, "The Fish Thief: A Great Lakes Mystery"

Watched it today, that was good and interesting.

LindenTree: "
Okinaw, "The Fish Thief: A Great Lakes Mystery"


Watched it today, that was good and interesting."

glad you enjoyed it

Sea Lamprey got to the Great Lakes through the welland canal. They aren’t very strong swimmers, and are usually stopped by the first minor barrier. Which is why low head dams are effective at stopping them. Personally, I don’t think they could survive in most inland waters. There are 3 or 4 native lamprey species in Minnesota, and are very common in the big river systems. And they are pretty harmless to the rest of the fish.