I’ve never heard anything remotely like that from anyone. I think it’s probably safe to say that hatchery ST in 1873, the year of the first PFC hatchery (Donegal Springs, Lanc Co) were genetically a lot different from those of today. My guess would be that they were close to being wild fish, if not wild fish, genetically speaking. ST from that and the other 1800’s hatchery (Corry, 1875) were spread far and wide, as were ST from the early 1900’s hatcheries. This would confound the issue of whether or not wild fish of today had their genetic beginnings with “hatchery stock.”
From my viewpoint and experiences with pollution impacts on many fish species and fisheries, I have a difficult time believing that some isolated remnants of wild stock were not left in little pockets of cleaner water around portions of the state, but then when I see the photos of Cross Fork’s denuded mountains at the peak of the logging days, if those pics are representative, I again start to think that maybe they were gone or at least largely so.
The other logical question that arises has to do with the speed of recovery. If the fry stockings didn’t work, how did the recovery occur so fast so far and wide across the state? If the recovery was strictly from remnants of wild fish, there must have been a lot of remnants and somehow they were located upstream from all types of natural physical and manmade barriers, as well as upstream from various forms of pollution. Thoughts about this are confounded as well by fry being transported by rail car and then wagon or horseback to remote areas.