  We prove that the Brauer algebra, for all parameters for which it is
quasi-hereditary, is Ringel dual to a category of representations of the
orthosymplectic super group. As a consequence we obtain new and algebraic
proofs for some results on the fundamental theorems of invariant theory for
this super group over the complex numbers and also extend them to some cases in
positive characteristic. Our methods also apply to the walled Brauer algebra in
which case we obtain a duality with the general linear super group, with
similar applications.
