Effective actions on squashed lens spaces

in order to test whether the boundary field theory entropy reflects Misner string bulk contributions, the effective actions (functional determinants) for scalars and spinors on the squashed 3-sphere identified under the actio n of a cyclic group, Z(m), are determined. Especially in the extreme oblate squashing limit, which has a thermodynamic interpretation, the high-temper ature behaviour is found as a function of m. Although the intermediate deta ils for odd and even m are different, the final answers are the same. A the rmodynamic interpretation for spinors is possible only for twisted periodic ity conditions and m even.