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Email mark.lokman@otago.ac.nzMark Lokman

Phone +64 3 479 5846

Teaching

Research Interests

  • Endocrine control of previtellogenic oocyte growth
  • Mechanisms controlling fecundity in fish
  • Evolution of vertebrate endocrine systems
  • Growth and reproduction of aquaculture species in NZ
  • Developmental Genetics

Current issues (potential research projects) in the NZ aquaculture industry include:
1. full artificial control of abalone reproduction
2. interaction between growth and reproduction in salmon
3. control of reproduction in eel, hapuka (groper) and giant kokopu
4. development of farming methods for new aquaculture species

Postgraduate Students

  • Erin Forbes (PhD) - effects of androgens on eel liver physiology
  • Khalid Alqaisi (PhD) - evolution of steroidogenesis in starfish
  • Sean Divers (PhD) - induced spawning of eel
  • Yair Kohn (PhD) - oogenesis and egg quality in hapuka
  • Ali Falahati (PhD) - GDF-9 signaling in the eel ovary
  • Alireza (Hamed) Shoae (PhD) - the ovarian IGF-I system in eel
  • Sam Van der Horst (MSc) - effects of steroids on eel heaptocytes
  • Tasman Gillies (MSc) - spawning induction in abalone

Publications

Kobayashi, Y., Keyamura, O., Lokman, M. P., & Chuda, H. (2023). Induction of precocious sex reversal in aquaculture: Effects of methyltestosterone treatment on gonadal sex of yearling longtooth grouper (Epinephelus bruneus). International Journal of Aquatic Biology, 11(6), 571-576. doi: 10.22034/ijab.v11i6.2064

Wansbrough, J., Lokman, P. M., & Closs, G. P. (2023). Local variation in the timing of reproduction and recruitment in a widely distributed diadromous fish. New Zealand Journal of Marine & Freshwater Research. Advance online publication. doi: 10.1080/00288330.2023.2212912

Babio, L., Damsteegt, E. L., & Lokman, P. M. (2023). Lipoprotein receptors in ovary of eel, Anguilla australis: Molecular characterisation of putative vitellogenin receptors. Fish Physiology & Biochemistry. Advance online publication. doi: 10.1007/s10695-023-01169-6

Muncaster, S., Goikoetxea, A., Lokman, P. M., De Farias e Moraes, C. E., Damsteegt, E. L., Edgecombe, J., Gemmell, N. J., & Todd, E. V. (2023). Genes involved in sex differentiation, epigenetic reprogramming, and cell fate regulate sex change in a wrasse. Reviews in Fish Biology & Fisheries. Advance online publication. doi: 10.1007/s11160-022-09755-2

Heenan, S. D., Michael, K. P., Smart, D. C., Lokman, P. M., & Lamare, M. D. (2023). Reproductive changes in Foveaux Strait Ostrea chilensis, Southern New Zealand, after Bonamia exitiosa epidemics. New Zealand Journal of Marine & Freshwater Research, 57(2), 242-260. doi: 10.1080/00288330.2021.1982729

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