Just because they say it doesn't mean it's true. As I mentioned earlier, New York just started out-of-season catch-and-release three years ago. Here in the U.S. we were one of only about a half-dozen states to be that restrictive. While we couldn't target bass, the anglers in every bordering state could fish for them. What did they know that New York didn't or vice versa?
At any rate, about 90% of our states have always allowed year-round bass fishing and their fisheries are still producing, regardless of what some say about what happens during the spawn. Maybe fisheries are more sensitive in the north? I have no idea.
In the meantime, in the three years since NY relaxed the regulations, I've heard nothing about any effect it has had or not had.
I truly feel bad for our friends in Canada and some of the northern states who love their bass and can't do what they love so much.
Got this from the MNR Ontario site. It may better explain the reasoning behind the 'total' bass close season in Ontario...that is to say, making the targeting of them during this period unlawful:
At more northern climes, such as in Ontario, the
growth and maturity of bass is delayed compared to stocks in the more southern portion
of their range. Large bass are particularly vulnerable during the spawning and nesting
period. There are also concerns that catch-and-release fishing of nesting bass can
impair reproductive success and subsequent recruitment . This situation may be more acute in southern Ontario where waters generally have more complex fish communities and, therefore, greater
predation. After modeling the effects of angling for nesting male smallmouth bass on
production of age-0 fish, Ridgway and Shuter (1997) concluded that closed fishing seasons during the parental care period was a viable management option.
4
This year we get to go a week earlier for them (June 23rd) instead of the last Saturday in June! :)