Louis-
Are trout under pressure not somewhat generally harder to catch than those that have never seen a fly? That is, if we do not spook them first? Doesn't some learning take place in some fish?
That was certainly a skillfully presented offering. Just for the sake of stirring the pot, please allow me to present an alternate theory. Not unlike flyfishers, some trout are more cautious than others. So in pressured waters, those with a lower CQ don't last long :-)
That didn’t slip by me, I was actually going to let it pass out of sheer laziness. But since you didn’t, Roger, I’ll bite.
The danger, and one mentioned in the article above, is that of anthropocentrism.
The evidence behind fish learning-to-avoid-angling comes in two forms:
-Population wide: Future generations get harder to catch bc the vulnerable fish were removed. This is not the question at hand, but often gets muddled in when talking catchability of fish in a given water.
-Individual fish: The ability to "learn", to adjust ones behavior, is not the same as being able to reason, to consider the future in a self perceptive way (or to suffer emotionally) in the same way we do.
But … so what? If fish are able to protect their bodily interests, shouldn’t we respect that? One way is to ascertain the physical stress and emotional suffering that might result from being captured. This is what’s at issue in Germany. Consensus in the above article suggests that the latter is not a valid concern in light of what’s known about fish nervous systems. The former can run the gamut from a fish dying from capture/handling damage to being released to take another lure ten minutes later. Conducted thoughtfully, the act of C&R creates a short term stress response from fish -little more. We each have a hand in the outcomes and most anglers, fly fishers esp, take care in this regard.
Regardless, in the end, I reject the assumptions of the German lawmakers as anti-ecological, ignoring the way nature works in a ham-fisted attempt to raise us all "above" … what?? Nature itself?!
But our self-indulgent empathetic judgments and penchant for monkeying with just about anything are bound to weigh in as we further domesticate the world, making it more and more “comfortable” for ourselves. Maybe then we will have succeeded in “evolving” to our “highest selves”, as the equal-rights-for-animals people have put it. Two BIG problems I see:
-Our highest cultural selves may not be what’s best for the ecological planet that grew us in the first place.
-Unbeknownst to nearly all, and underappreciated by most of the rest, is that evolution operates laterally, not vertically/hierarchically. Likely, continuing out on such a limb will leave our "higher selves" impoverished. Again, what's construed as a higher plane for us may not pan out so well for what's supporting us from "beneath".