1 Contraceptive applications of GnRH-analogs and vaccines for wildlife mammals of southern Africa: Current experience and future challenges H.J. Bertschinger 1* E. Scott Sills 2,3 1 Section of Reproduction, Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria; Pretoria SOUTH AFRICA 2 School of Life Sciences, University of Westminster; London UK 3 Division of Reproductive Endocrinology, PRC-Orange County; Irvine, California USA *Correspondence to: P.O. Box 75058, Lynnwood Ridge 0040; Pretoria SOUTH AFRICA Tel: +27 12 8043312 Fax: +27 12 8043312 Email: henkbert@tiscali.co.za Running title: GnRH-analogs and vaccines for wildlife mammals Disclosure statement: The authors declare no conflict of interest.