1 23 International Journal of Biometeorology ISSN 0020-7128 Int J Biometeorol DOI 10.1007/s00484-012-0622-y Larger antelopes are sensitive to heat stress throughout all seasons but smaller antelopes only during summer in an African semi-arid environment A. K. Shrestha, S. E. van Wieren, F. van Langevelde, A. Fuller, R. S. Hetem, L. Meyer, S. de Bie & H. H. T. Prins