A unifying hypothesis for control of body weight and reproduction in seasonally breeding mammals

e thank Pat Bain for help in preparing the figures. The authors are supported by the Scottish Government (PJM and PB), BBSRC (BB/K001043/1) (PJM and GH), MRC (MR/P012205/1) (PJM) and The Physiological Society (GH). The authors declare that they have no conflicts of interst.