I have to aggree with Ryan and Katie. With the rate the habitat is disappearing there won't be any wild caught.
As for RES, I'm doubting there are many wild caught turtles imported legaly into canada, you need a permit to bring them in and they won't give permits for the pet trade.
As for protection of native species, many provices protect delicate native species, such as pygmy rattlers in ontario.
I think we have a bigger problem with freeroaming cats and dogs.