  In this article, we prove integration by parts formulae (IbPFs) for the laws
of Bessel bridges from 0 to 0 over the interval [0,1] of dimension smaller than
3. As an application, we construct a weak version of an SPDE having the law of
a one-dimensional Bessel bridge (i.e. the law of a reflected Brownian bridge)
as reversible measure, the dimension 1 being particularly relevant in view of
applications to scaling limits of dynamical critical pinning models. We also
exploit the IbPFs to conjecture the structure of the SPDEs associated with
Bessel bridges of all dimensions smaller than 3.
