Researcher biography

A/Prof Stephen Johnston is a Reader in Reproduction (40% Teaching; 40% Research and 20% Service) in the School of Agriculture and Food Sciences Studies at the University of Queensland, where he teaches animal reproduction to applied science and science undergraduate and postgraduate students. Stephen was trained as a zoologist and specialises in the area of reproductive biology in a broad diversity of species ranging from prawns to tigers but with a major focus on Australian mammals. A/Prof Johnston has published 283 scientific works in basic and applied science disciplines including reproductive anatomy, physiology and behaviour. He was the first person in the world to produce a pouch young following artificial insemination in a marsupial, a task that he and his colleagues have now carried out successfully in the koala, a total of 34 times. Stephen is also a specialist in the cryopreservation of marsupial spermatozoa and in the assessment of sperm DNA fragmentation, including human and domestic animal spermatozoa. A/Prof Johnston's recent research interests and grant success include studies aimed at a better understanding of the effect of chlamydia on male koala reproduction, heat stress in koalas, sociobiology of koalas, genetic and reproductive management of koalas, wombat captive reproduction, echidna captive breeding, crocodile artificial insemination and prawn aquaculture. He was recently elected Fellow of the Society for Reproductive Biology (2019)

Areas of research