I know studies have been done on portions of the Missouri River where commercial fishing was stopped due to the decline in flathead numbers. Can't remember the figures exactly, but it didn't take long at all for the reports of trophy sized flatheads to increase dramatically after the change. There's plenty of evidence that shows limits and decreased commercial fishing greatly increase both the size and population density of catfish.
The tough part, and what we need to do, is show that some type of limits need to be put in place. Anecdotal information and gut feelings regarding the current trends in catfish/flathead populations probably won't be enough to get things done. But, if we can show that there is an overwhelming interest in protecting these species, and that catfish are a major sport/trophy fish here in Ohio, this will definately help the cause. Still just putting my thoughts out there, though -- I don't have any solutions to the problems.
The tough part, and what we need to do, is show that some type of limits need to be put in place. Anecdotal information and gut feelings regarding the current trends in catfish/flathead populations probably won't be enough to get things done. But, if we can show that there is an overwhelming interest in protecting these species, and that catfish are a major sport/trophy fish here in Ohio, this will definately help the cause. Still just putting my thoughts out there, though -- I don't have any solutions to the problems.