Attached is the only document that a Lake Michigan fisherman really needs to absorb with regards to Cisco introduction and the profound negative impacts it would have on our existing predator prey modeling efforts for chinook/coho/steehead and alewife/smelt/goby. Cisco are an extremely aggressive and adaptive predator, outcompeting juvenile alewife for zooplankton at age 0, and then quickly growing to lengths of 12 inches or more and heavily preying upon alewife (and goby and smelt).
This Cisco restoration initiative for open waters of Lake Michigan is opposed strongly by MIchigan and Wisconsin DNR's, and is solely being put forward by the USFWS to put the final nail in the alewife coffin on Lake Michigan, despite a significant and measurable rebound in Alewife populations in the lake over the past two years. This Cisco restoration initiative runs completely counter to our states actions over the past decade to reduce predator stocks (Chinook) to balance prey with preyfish,and to allow Alewife to rebound. Indiana and Illinois are suspected to support the Cisco restoration program, and in doing so, are themselves promoting the suppression if not complete eradication of alewife from Lake Michigan. Who would do that despite strong opposition from their angler constituencies? Who would do that despite the clear and obvious preference by angler constituencies in Illinois and Indiana waters for "silver" pelagic species of Chinook, Coho and Steelhead?
12" + meat-eating Cisco (Lake Herring) are not food for anything other than a 20 year old lake trout. They are rarely if ever consumed and by only the largest of Chinook specimens in the final months of their lives. Cisco serve no preyfish purpose to Coho, Steelhead and the majority of Chinook age classes found in Lake Michigan.
Cisco restoration, as noted in the posts above, are to serve a dual purpose for Federal Fish and Wildlife managers. The first is to suppress and/or completely eradicate all non-native prey species (alewife, smelt, goby) and then to exist as the only food source for......Lake Trout.
The Lake Michigan Lake Trout restoration program is in its final days. There is no longer any stocking of Lake Trout in the entirety of the southern basin of Lake Michigan due to nearly complete and total rehabilitation (i.e. natural reproduction) of Lake Trout. Despite Federal interference in States fisheries management issues, and the primary lake forage still being Alewife, Lake Trout have been successfully rehabilitated in the majority of the Lake (outside of mandated Tribal Treaty Waters). This incessant push by the Feds to serve only Lake Trout, and actually go to the point of raising "baitfish" i.e. Cisco, for Lake Trout...again, flies in the face of States fisheries management directives clearly communicated by the angler community. Enough with Lake Trout, sportsmen have spoken. There are enough Lake Trout in the southern and mid-
basin of Lake Michigan to support recreational/charter fishing activities for many many many decades into the future. We have no commercial fishing for Lake Trout in our waters, and can easily regulate harvest to ensure Lake Trout populations are healthy enough to support recreational fishing activities.
Restoring Cisco (Lake Herring) as a food source for Lake Trout, and at the same time to suppress and eradicate Alewife are nothing more than the ultimate goal of Federal Fisheries managers to eliminate Chinook from our sportfishery. Whats next, Coho and Steelhead? Without Alewife, Coho and Steelhead are both also doomed, despite being opportunistic feeders.... Nothing compares to an Alewife for Coho and Steelhead when considering protein rich food sources, and Cisco are certainly not a suitable or even realistic preyfish substitute for Coho and Steelhead.