We discuss the impact of chiral symmetry constraints on the quark-mass dependence of meson resonance pole positions, which are encoded in non-perturbative parametrizations of meson scattering amplitudes. Model-independent conditions on such parametrizations are derived, which are shown to guarantee the correct functional form of the leading quark-mass corrections to the resonance pole positions. Some model amplitudes for pi scattering, widely used for the determination of rho and sigma resonance properties from results of lattice simulations, are tested explicitly with respect to these conditions. (c) 2018 The Authors. Published by Elsevier B.V.