Professor Mark Lokman

2024

Journal - Research Article

Waller, S. J., Egan, E., Crow, S., Charsley, A., Lokman, P. M., Williams, E. K., … Geoghegan, J. L. (2024). Host and geography impact virus diversity in New Zealand’s longfin and shortfin eels. Archives of Virology, 169, 85. doi: 10.1007/s00705-024-06019-1

Corre, P. H. C., Mainwaring, J. M., Peralta, K. K. Z., Lokman, P. M., Porteous, R., & Wibowo, E. (2024). Low dose of propyl-pyrazole-triol, an agonist of estrogen receptor alpha, administration stimulates the Coolidge effect in fadrozole-treated male rats. Hormones & Behavior, 161, 105520. doi: 10.1016/j.yhbeh.2024.105520

Wansbrough, J., Lokman, P. M., & Closs, G. P. (2024). Local variation in the timing of reproduction and recruitment in a widely distributed diadromous fish. New Zealand Journal of Marine & Freshwater Research, 58(2), 238-254. doi: 10.1080/00288330.2023.2212912

2023

Journal - Research Article

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

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, 49, 117-137. 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, 33, 281-294. 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

2022

Chapter in Book - Research

Babio, L., Damsteegt, E. L., Akhavan, S. R., & Lokman, M. (2022). The biology of making an egg: A fish's perspective. In A. E.-D. A. Bekhit (Ed.), Fish roe: Biochemistry, products, and safety. (pp. 19-40). London, UK: Academic Press. doi: 10.1016/B978-0-12-819893-3.00003-5

Journal - Research Article

Nguyen, A. T., Dao, H. T., Quang, H. T., Hagihara, S., Lokman, P. M., & Damsteegt, E. L. (2022). Genetic Diversity and Population Structure of the Giant Mottled Eel, Anguilla marmorata Quoy & Gaimard, 1824 in Central Vietnam. Fishes, 7, 286. doi: 10.3390/fishes7050286

Palstra, A. P., Bouwman, L. J., Jéhannet, P., Kruijt, L., Schipper, H., Blokland, M. H., … Lokman, P. M. (2022). Steroid implants for the induction of vitellogenesis in feminized European silver eels (Anguilla anguilla L.). Frontiers in Genetics, 13, 969202. doi: 10.3389/fgene.2022.969202

Goikoetxea, A., Todd, E. V., Muncaster, S., Lokman, P. M., Thomas, J. T., Robertson, H. A., … Gemmell, N. J. (2022). Effects of cortisol on female-to-male sex change in a wrasse. PLoS ONE, 17(9), e0273779. doi: 10.1371/journal.pone.0273779

Divers, S. L., Johnson, S. L., & Lokman, P. M. (2022). Sperm quality of artificially matured shortfinned eel is not affected by human chorionic gonadotropin dose and route of administration. PeerJ, 10, e13742. doi: 10.7717/peerj.13742

Vo, D. N., Nguyen, V. H., Nguyen, D. T., An Le, T. T., Wylie, M. J., Lokman, P. M., & Nguyen, A. T. (2022). Reproductive development of female wallago catfish (Wallago attu) in captivity. Animal Reproduction Science, 242, 107014. doi: 10.1016/j.anireprosci.2022.107014

Nguyen, A. T., Damsteegt, E. L., Chia, J. H. Z., Kazeto, Y., & Lokman, P. M. (2022). Effects of gonadotropins, 11-ketotestosterone, and insulin-like growth factor-1 on target gene expression and growth of previtellogenic oocytes from shortfinned eels, Anguilla australis, in vitro. Fish Physiology & Biochemistry, 48, 853-867. doi: 10.1007/s10695-022-01090-4

Babio, L., Lokman, P. M., Damsteegt, E. L., & Dutoit, L. (2022). Are cell junctions implicated in the regulation of vitellogenin uptake? Insights from an RNAseq-based study in eel, Anguilla australis. Cells, 11, 550. doi: 10.3390/cells11030550

2021

Journal - Research Article

Goikoetxea, A., Muncaster, S., Todd, E. V., Lokman, P. M., Robertson, H. A., De Farias e Moraes, C. E., Damsteegt, E. L., & Gemmell, N. J. (2021). A new experimental model for the investigation of sequential hermaphroditism. Scientific Reports, 11(1), 22881. doi: 10.1038/s41598-021-02063-y

Falahati, A., Ozaki, Y., Damsteegt, E. L., Zadmajid, V., Freeman, K. J., & Lokman, P. M. (2021). Spatiotemporal expression of activin receptor-like kinase-5 and bone morphogenetic protein receptor type II in the ovary of shortfinned eel, Anguilla australis. Comparative Biochemistry & Physiology Part B, 251, 110509. doi: 10.1016/j.cbpb.2020.110509

Smart, D. C., Heenan, S., Lokman, P. M., & Lamare, M. D. (2021). Seasonal reproduction of the blue mussel (Mytilus galloprovincialis) from two locations in southern New Zealand. New Zealand Journal of Marine & Freshwater Research, 55(2), 311-325. doi: 10.1080/00288330.2020.1757472

2020

Journal - Research Article

Goikoetxea, A., Damsteegt, E. L., Todd, E. V., McNaughton, A., Gemmell, N. J., & Lokman, P. M. (2020). An in vitro ovarian explant culture system to examine sex change in a hermaphroditic fish. PeerJ, 8, e10323. doi: 10.7717/peerj.10323

Akhavan, S. R., Falahatkar, B., McCormick, S. P. A., & Lokman, P. M. (2020). Changes in lipid biology during ovarian development in farmed beluga sturgeon, Huso huso L. American Journal of Physiology: Regulatory, Integrative & Comparative Physiology, 319, R376-R386. doi: 10.1152/ajpregu.00364.2019

Baker, N. J., Boubee, J., Lokman, P. M., & Bolland, J. D. (2020). Evaluating the impact of hydropower on downstream migrating anguillid eels: Catchment-wide and fine-scale approaches to identify cost-effective solutions. Science of the Total Environment, 748, 141111. doi: 10.1016/j.scitotenv.2020.141111

Rahdari, A., Khoshkholgh, M., Yarmohammadi, M., Ortiz-Zarragoitia, M., Lokman, P. M., Akhavan, S. R., … Falahatkar, B. (2020). The effects of 11-ketotestosterone implants on transcript levels of gonadotropin receptors, foxl2 and dmrt1 genes in the Previtellogenic ovary of cultured beluga (Huso huso). Journal of Fish Biology, 97, 374-382. doi: 10.1111/jfb.14366

Damsteegt, E. L., Thomson-Laing, G., Wylie, M. J., & Lokman, P. M. (2020). Effects of estradiol and 11-ketotestosterone pre-treatment on artificial induction of maturation in silver female shortfinned eels (Anguilla australis). PLoS ONE, 15(2), e0229391. doi: 10.1371/journal.pone.0229391

Palstra, A. P., Jéhannet, P., Swinkels, W., Heinsbroek, L. T. N., Lokman, P. M., Vesala, S., … Saukkonen, S. (2020). First observation of a spontaneously matured female European eel (Anguilla anguilla). Scientific Reports, 10, 2339. doi: 10.1038/s41598-020-59331-6

Nguyen, A. T., Chia, J. H. Z., Kazeto, Y., Wylie, M. J., & Lokman, P. M. (2020). Induction of oocyte development in previtellogenic eel, Anguilla australis. General & Comparative Endocrinology, 291, 113404. doi: 10.1016/j.ygcen.2020.113404

Horiuchi, M., Izumi, H., Lokman, P. M., Ijiri, S., & Adachi, S. (2020). Relationship between abundance and localization of maternal messenger RNA and egg quality in artificially matured Japanese eel Anguilla japonica. Fisheries Science, 86, 43-56. doi: 10.1007/s12562-019-01377-1

2019

Journal - Research Article

Thomas, J. T., Todd, E. V., Muncaster, S., Lokman, P. M., Damsteegt, E. L., Liu, H., … Gemmell, N. J. (2019). Conservation and diversity in expression of candidate genes regulating socially-induced female-male sex change in wrasses. PeerJ, 7, e7032. doi: 10.7717/peerj.7032

Wylie, M. J., Setiawan, A. N., Irvine, G. W., Elizur, A., Zohar, Y., Symonds, J. E., & Lokman, P. M. (2019). Induced spawning of F1 wreckfish (Hāpuku) Polyprion oxygeneios using a synthetic agonist of gonadotropin-releasing hormone. Fishes, 4(3), 41. doi: 10.3390/fishes4030041

Matsubara, H., Lokman, P. M., Kazeto, Y., Okumura, H., Ijiri, S., Hirai, T., … Yamauchi, K. (2019). Changes in sex steroids and ovarian steroidogenic enzyme mRNA levels in artificially maturing Japanese eel (Anguilla japonica) and naturally maturing New Zealand longfin eel (Anguilla dieffenbachii) during vitellogenesis. Fishes, 4, 52. doi: 10.3390/fishes4040052

Izumi, H., Gen, K., Lokman, P. M., Hagihara, S., Horiuchi, M., Tanaka, T., … Adachi, S. (2019). Maternal transcripts in good and poor quality eggs from Japanese eel, Anguilla japonica: Their identification by large-scale quantitative analysis. Molecular Reproduction & Development, 86, 1846-1864. doi: 10.1002/mrd.23273

Ozaki, Y., Damsteegt, E. L., Setiawan, A. N., Miura, T., & Lokman, P. M. (2019). Expressional regulation of gonadotropin receptor genes and androgen receptor genes in the eel testis. General & Comparative Endocrinology, 280, 123-133. doi: 10.1016/j.ygcen.2019.04.020

Wylie, M. J., Symonds, J. E., Setiawan, A. N., Irvine, G. W., Liu, H., Elizur, A., & Lokman, P. M. (2019). Transcriptomic changes during previtellogenic and vitellogenic stages of ovarian development in wreckfish (hāpuku), Polyprion oxygeneios (Perciformes). Fishes, 4(1), 16. doi: 10.3390/fishes4010016

Akhavan, S. R., Falahatkar, B., Ward, J. M., & Lokman, P. M. (2019). 11-Ketotestosterone induces oocyte growth, but does not affect oocyte cytology in pre-vitellogenic captive beluga, Huso huso L. Comparative Biochemistry & Physiology Part B, 232, 51-59. doi: 10.1016/j.cbpb.2019.02.009

Jéhannet, P., Kruijt, L., Damsteegt, E. L., Swinkels, W., Heinsbroek, L. T. N., Lokman, P. M., & Palstra, A. P. (2019). A mechanistic model for studying the initiation of anguillid vitellogenesis by comparing the European eel (Anguilla anguilla) and the shortfinned eel (A. australis). General & Comparative Endocrinology, 279, 129-138. doi: 10.1016/j.ygcen.2019.02.018

Thomson-Laing, G., Damsteegt, E. L., Nagata, J., Ijiri, S., Adachi, S., Todo, T., … Lokman, P. M. (2019). Synergistic effects of estradiol and 11-ketotestosterone on vitellogenin physiology in the shortfinned eel (Anguilla australis). Biology of Reproduction, 100(5), 1319-1332. doi: 10.1093/biolre/ioz007

Nguyen, A. T., Chia, J. H. Z., Kazeto, Y., & Lokman, P. M. (2019). Expression of gonadotropin subunit and gonadotropin receptor genes in wild female New Zealand shortfinned eel (Anguilla australis) during yellow and silver stages. General & Comparative Endocrinology, 272, 83-92. doi: 10.1016/j.ygcen.2018.12.001

Burgerhout, E., Lokman, P. M., van den Thillart, G. E. E. J. M., & Dirks, R. P. (2019). The time-keeping hormone melatonin: A possible key cue for puberty in freshwater eels (Anguilla spp.). Reviews in Fish Biology & Fisheries, 29, 1-21. doi: 10.1007/s11160-018-9540-3

Stuart, R. E., Closs, G. P., Lokman, P. M., & Jellyman, D. (2019). The influence of environmental cues on the activity of silver eels (Anguilla dieffenbachii) in Lake Manapouri, New Zealand. New Zealand Journal of Marine & Freshwater Research, 53(2), 169-181. doi: 10.1080/00288330.2018.1483955

Conference Contribution - Published proceedings: Abstract

Lokman, P. M., Thomson-Laing, G., Heinsbroek, L. T. N., Jéhannet, P., Swinkels, W., Palstra, A. P., & Damsteegt, E. L. (2019). Hormonal induction of maturation in female anguillids: Is there a future for the use of steroid implants? Proceedings of the Thematic Eel Group Meeting at Aquaculture Europe. Wageningen University. Retrieved from https://research.wur.nl/en/publications/hormonal-induction-of-maturation-in-female-anguillids-is-there-a-

Working Paper; Discussion Paper; Technical Report

Thomas, J. T., Todd, E. V., Muncaster, S., Lokman, P. M., Damsteegt, E. L., Liu, H., … Gemmell, N. J. (2019). Conservation and diversity in expression of candidate genes regulating socially-induced female-male sex change in wrasses. PeerJ Preprints. doi: 10.7287/peerj.preprints.27461v1

2018

Journal - Research Article

Nguyen, A. T., Tsukamoto, K., & Lokman, P. M. (2018). Composition and distribution of freshwater eels Anguilla spp. in Vietnam. Fisheries Science, 84, 987-994. doi: 10.1007/s12562-018-1239-9

Damsteegt, E. L., Davie, A., & Lokman, P. M. (2018). The evolution of apolipoprotein B and its mRNA editing complex: Does the lack of editing contribute to hypertriglyceridemia? Gene, 641, 46-54. doi: 10.1016/j.gene.2017.10.024

Mordenti, O., Emmanuele, P., Casalini, A., Lokman, P. M., Zaccaroni, A., Di Biase, A., & Parmeggiani, A. (2018). Effect of aromatable androgen (17-methyltestosterone) on induced maturation of silver European eels (Anguilla Anguilla): Oocyte performance and synchronization. Aquaculture Research, 49(1), 442-448. doi: 10.1111/are.13475

Wylie, M. J., Setiawan, A. N., Irvine, G. W., Symonds, J. E., Elizur, A., Dos Santos, M., & Lokman, P. M. (2018). Ovarian development of captive F1 wreckfish (hāpuku) Polyprion oxygeneios under constant and varying temperature regimes: Implications for broodstock management. General & Comparative Endocrinology, 257, 86-96. doi: 10.1016/j.ygcen.2017.08.022

Wylie, M. J., Setiawan, A. N., Irvine, G. W., Symonds, J. E., Elizur, A., & Lokman, P. M. (2018). Effects of neuropeptides and sex steroids on the pituitary-gonadal axis of pre-pubertal F1 wreckfish (hāpuku) Polyprion oxygeneios in vivo: Evidence of inhibitory effects of androgens. General & Comparative Endocrinology, 257, 113-121. doi: 10.1016/j.ygcen.2017.08.018

Thomson-Laing, G., Jasoni, C. L., & Lokman, P. M. (2018). The effects of migratory stage and 11-ketotestosterone on the expression of rod opsin genes in the shortfinned eel (Anguilla australis). General & Comparative Endocrinology, 257, 211-219. doi: 10.1016/j.ygcen.2017.06.025

Conference Contribution - Poster Presentation (not in published proceedings)

Wylie, M. J., Valenza-Troubat, N., Storey, R., Elizur, A., Nocillado, J., Lokman, P. M., & Wellenreuther, M. (2018, August). Identification and structural prediction of pituitary gonadotropins in trevally (Pseudocaranx geogianus). Poster session presented at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

Conference Contribution - Verbal presentation and other Conference outputs

Lokman, P. M. (2018, August). A review of recent advances in reproductive technologies of fish: The dawn of a new era? Verbal presentation at the Queenstown Molecular Biology (QMB) Meetings, Queenstown, New Zealand.

2017

Journal - Research Article

Di Biase, A., Lokman, P. M., Govoni, N., Casalini, A., Emmanuele, P., Parmeggiani, A., & Mordenti, O. (2017). Co-treatment with androgens during artificial induction of maturation in female eel, Anguilla anguilla: Effects on egg production and early development. Aquaculture, 479, 508-515. doi: 10.1016/j.aquaculture.2017.06.030

Liu, H., Todd, E. V., Lokman, M. P., Lamm, M. S., Godwin, J. R., & Gemmell, N. J. (2017). Sexual plasticity: A fishy tale. Molecular Reproduction & Development, 84(2), 171-194. doi: 10.1002/mrd.22691

Conference Contribution - Published proceedings: Abstract

Thomas, J. T., Todd, E. V., Liu, H., Gléonnec, F., Lamm, M. S., Rutherford, K., … Lokman, P. M., & Gemmell, N. J. (2017). Investigating early genetic regulators of sex change in labrid fish: A multispecies candidate gene approach. Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 533. Retrieved from http://gen2017.w.events4you.currinda.com

Goikoetxea-Pérez de Mendiola, A., Todd, E., Muncaster, S., Lokman, M., Thomas, J., Liu, H., & Gemmell, N. (2017). Sex and stress: Is cortisol a mediator of sex change in fish? Proceedings of the University of Otago Student Research Symposium: Te Wānaka Rakahau: Ākoka. (pp. 29-30). Retrieved from http://www.otago.ac.nz/graduate-research/scholarships/otago643219.html

Goikoetxea Perez de Mendiola, A., Todd, E. V., Muncaster, S., Lokman, M., Thomas, J. T., Liu, H., & Gemmell, N. J. (2017). Sex and stress: Is cortisol a mediator of sex change in fish? Proceedings of the Annual Conference of the Genetics Society of Australasia (GSA) with the New Zealand Society for Biochemistry and Molecular Biology (NZSBMB). 532. Retrieved from http://gen2017.w.events4you.currinda.com

Thomas, J. T., Todd, E. V., Liu, H., Lamm, M. S., Rutherford, K., Godwin, J. R., Lokman, P. M., & Gemmell, N. J. (2017). Investigating early genetic regulators of sex change in labrid fish. New Zealand Medical Journal, 130(1461), (pp. 88). Retrieved from http://www.nzma.org.nz/journal

2016

Journal - Research Article

Damsteegt, E. L., McHugh, N., & Lokman, P. M. (2016). Storage by lyophilization: Resulting RNA quality is tissue dependent. Analytical Biochemistry, 511, 92-96. doi: 10.1016/j.ab.2016.08.005

Setiawan, A. N., Muncaster, S., Pether, S., King, A., Irvine, G. W., Lokman, P. M., & Symonds, J. E. (2016). The effects of gonadotropin-releasing hormone analog on yellowtail kingfish Seriola lalandi (Valenciennes, 1833) spawning and egg quality. Aquaculture Reports, 4, 1-9. doi: 10.1016/j.aqrep.2016.05.001

Lokman, P. M., Damsteegt, E. L., Wallace, J., Downes, M., Goodwin, S. L., Facoory, L. J., & Wylie, M. J. (2016). Dose-responses of male silver eels, Anguilla australis, to human chorionic gonadotropin and 11-ketotestosterone in vivo. Aquaculture, 463, 97-105. doi: 10.1016/j.aquaculture.2016.05.009

Alqaisi, K. M., Lamare, M. D., Grattan, D. R., Damsteegt, E. L., Schneider, W. J., & Lokman, P. M. (2016). A comparative study of vitellogenesis in Echinodermata: Lessons from the sea star. Comparative Biochemistry & Physiology Part A, 198, 72-86. doi: 10.1016/j.cbpa.2016.04.013

Damsteegt, E. L., Ozaki, Y., McCormick, S. P. A., & Lokman, P. M. (2016). Triacylglyceride physiology in the shortfinned eel, Anguilla australis: The effects of androgen. American Journal of Physiology: Regulatory, Integrative & Comparative Physiology, 310, R422-R431. doi: 10.1152/ajpregu.00149.2015

Di Biase, A., Casalini, A., Emmanuele, P., Mandelli, M., Lokman, P. M., & Mordenti, O. (2016). Controlled reproduction in Anguilla anguilla (L.): Comparison between spontaneous spawning and stripping-insemination approaches. Aquaculture Research, 47(10), 3052-3060. doi: 10.1111/are.12755

Wylie, M. J., Closs, G. P., Damsteegt, E. L., & Lokman, P. M. (2016). Effects of salinity and temperature on artificial cultivation and early ontogeny of giant kokopu, Galaxias argenteus (Gmelin 1789). Aquaculture Research, 47(5), 1472-1480. doi: 10.1111/are.12605

Conference Contribution - Published proceedings: Abstract

Muncaster, S., Todd, E., Lokman, M., & Gemmell, N. (2016). Gonadal sex change in the protogynous temperate spotty wrasse, Notolabrus celidotus. Proceedings of the New Zealand Marine Sciences Society (NZMSS) and Australian Marine Sciences Association (AMSA) Conference: Sharing Ocean Resources: Now and in the Future. (pp. 97). Retrieved from https://innovators.eventsair.com/QuickEventWebsitePortal/nzmss-amsa-2016/home/Agenda

2015

Journal - Research Article

Kohn, Y. Y., Symonds, J. E., Kleffmann, T., Nakagawa, S., Lagisz, M., & Lokman, P. M. (2015). Proteomic analysis of early-stage embryos: Implications for egg quality in hapuku (Polyprion oxygeneios). Fish Physiology & Biochemistry, 41(6), 1403-1417. doi: 10.1007/s10695-015-0095-0

Zadmajid, V., Falahatimarvast, A., Damsteegt, E. L., Setiawan, A. N., Ozaki, Y., Shoae, A., & Lokman, P. M. (2015). Effects of 11-ketotestosterone and temperature on inhibin subunit mRNA levels in the ovary of the shortfinned eel, Anguilla australis. Comparative Biochemistry & Physiology Part B, 187, 14-21. doi: 10.1016/j.cbpb.2015.04.012

Damsteegt, E. L., Falahatimarvast, A., McCormick, S. P. A., & Lokman, P. M. (2015). Triacylglyceride physiology in the short-finned eel, Anguilla australis: Changes throughout early oogenesis. American Journal of Physiology: Regulatory, Integrative & Comparative Physiology, 308(11), R935-R944. doi: 10.1152/ajpregu.00436.2014

Senior, A. M., Lokman, M. P., Closs, G. P., & Nakagawa, S. (2015). Ecological and evolutionary applications for environmental sex reversal of fish. Quarterly Review of Biology, 90(1), 23-44. doi: 10.1086/679762

Akhavan, S. R., Falahatkar, B., Tolouei Gilani, M. H., & Lokman, P. M. (2015). Effects of estradiol-17β implantation on growth rate, ovarian growth, sex steroid levels and vitellogenin proxies in previtellogenic sturgeon Huso huso. Animal Reproduction Science, 157, 1-10. doi: 10.1016/j.anireprosci.2014.12.010

Lokman, P. M., Wylie, M. J., Downes, M., Di Biase, A., & Damsteegt, E. L. (2015). Artificial induction of maturation in female silver eels, Anguilla australis: The benefits of androgen pre-treatment. Aquaculture, 437, 1111-1119. doi: 10.1016/j.aquaculture.2014.11.026

Conference Contribution - Published proceedings: Full paper

Damsteegt, E. L., Mizuta, H., Hiramatsu, N., & Lokman, P. M. (2015). How do eggs get fat? Insights into ovarian fatty acid accumulation in the shortfinned eel, Anguilla australis. General & Comparative Endocrinology, 221, (pp. 94-100). doi: 10.1016/j.ygcen.2014.12.019

2014

Journal - Research Article

Lokman, P. M., & Symonds, J. E. (2014). Molecular and biochemical tricks of the research trade: -omics approaches in finfish aquaculture. New Zealand Journal of Marine & Freshwater Research, 48(3), 492-505. doi: 10.1080/00288330.2014.928333

Akbaripasand, A., Ramezani, J., Lokman, P. M., & Closs, G. P. (2014). Can drifting invertebrates meet the energy requirements of drift-feeding fish? A Case Study on Galaxias fasciatus. Freshwater Science, 33(3), 904-914. doi: 10.1086/676957

Akbaripasand, A., Ramezani, J., Lokman, P. M., & Closs, G. P. (2014). Does social status within a dominance hierarchy mediate individual growth, residency and relocation? Oecologia, 176(3), 771-779. doi: 10.1007/s00442-014-3038-z

Johnson, S. L., Villarroel, M., Rosengrave, P., Carne, A., Kleffmann, T., Lokman, P. M., & Gemmell, N. J. (2014). Proteomic analysis of Chinook salmon (Oncorhynchus tshawytscha) ovarian fluid. PLoS ONE, 9(8), e104155. doi: 10.1371/journal.pone.0104155

Damsteegt, E. L., Mizuta, H., Ozaki, Y., Hiramatsu, N., Todo, T., Hara, A., … Lokman, P. M. (2014). Development and partial characterisation of an antiserum against apolipoprotein B of the short-finned eel, Anguilla australis. Journal of Comparative Physiology B, 184(5), 589-599. doi: 10.1007/s00360-014-0821-4

Conference Contribution - Published proceedings: Abstract

Wylie, M. J., Closs, G. P., Damsteegt, E. L., & Lokman, P. M. (2014). Whitebait aquaculture in New Zealand using the Giant Kokopu, Galaxias argenteus: Effects of salinity and temperature on fertilisation and hatching rates. Proceedings of the World Aquaculture Meeting: Create, Nurture, Grow. (pp. 781). Retrieved from https://www.was.org/meetings/default.aspx?code=wa2014

2013

Journal - Research Article

Kohn, Y. Y., Symonds, J. E., & Lokman, P. M. (2013). The effects of 11-ketotestosterone on ovarian physiology of previtellogenic captive hapuku (Polyprion oxygeneios). Comparative Biochemistry & Physiology Part A, 166(3), 496-502. doi: 10.1016/j.cbpa.2013.07.032

Reid, P. M., Divers, S. L., Zadmajid, V., Alqaisi, K. M., & Lokman, P. M. (2013). Steroidogenic acute regulatory protein transcript abundance in the eel, Anguilla australis: Changes during the induced reproductive cycle and effects of follicle-stimulating hormone during previtellogenesis. Journal of Steroid Biochemistry & Molecular Biology, 138, 464-470. doi: 10.1016/j.jsbmb.2013.02.003

Kohn, Y. Y., Lokman, P. M., Kilimnik, A., & Symonds, J. E. (2013). Sex identification in captive hapuku (Polyprion oxygeneios) using ultrasound imagery and plasma levels of vitellogenin and sex steroids. Aquaculture, 384-387, 87-93. doi: 10.1016/j.aquaculture.2012.12.020

Wylie, M. J., Forbes, E. L., & Lokman, P. M. (2013). Ovarian biopsy: A non-terminal method to determine reproductive status in giant kokopu, Galaxias argenteus (Gmelin 1789). New Zealand Veterinary Journal, 61(5), 292-296. doi: 10.1080/00480169.2012.740657

Ghosh, R., Lokman, P. M., Lamare, M. D., Metcalf, V. J., Burritt, D. J., Davison, W., & Hageman, K. J. (2013). Changes in physiological responses of an Antarctic fish, the emerald rock cod (Trematomus bernacchii), following exposure to polybrominated diphenyl ethers (PBDEs). Aquatic Toxicology, 128-129, 91-100. doi: 10.1016/j.aquatox.2012.11.019

Conference Contribution - Published proceedings: Abstract

Lokman, M., Forbes, E. L., Divers, S. L., Wylie, M. J., Wallace, J., & Ozaki, Y. (2013). Overriding gametogenic arrest: how much hCG to administer to reliably induce spermatogenesis in the shortfinned eel, Anguilla australis? Proceedings of the Endocrine Society of Australia (ESA) and 45th Society for Reproductive Biology (SRB) Annual Conference. Retrieved from http://esa-srb-2013.m.asnevents.com.au

2012

Journal - Research Article

Setiawan, A. N., Ozaki, Y., Shoae, A., Kazeto, Y., & Lokman, P. M. (2012). Androgen-specific regulation of FSH signalling in the previtellogenic ovary and pituitary of the New Zealand shortfinned eel, Anguilla australis. General & Comparative Endocrinology, 176(2), 132-143. doi: 10.1016/j.ygcen.2011.12.041

Falahatimarvast, A., Poorbagher, H., & Lokman, P. M. (2012). The reproductive biology of Pomadasys kaakan (Osteichthyes: Haemulidae) in the northern Persian Gulf. Cahiers de Biologie Marine, 53(1), 25-34.

Setiawan, A. N., Wylie, M. J., Forbes, E. L., & Lokman, P. M. (2012). The effects of 11-ketotestosterone on occupation of downstream location and seawater in the New Zealand shortfinned eel, Anguilla australis. Zoological Science, 29(1), 1-5. doi: 10.2108/zsj.29.1

Conference Contribution - Published proceedings: Abstract

Forbes, E., & Lokman, M. (2012). Androgen-mediated increases in oocyte lipid accumulation in the shortfinned eel (Anguilla australis). Proceedings of the 7th International Symposium on Fish Endocrinology. (pp. 102). Retrieved from https://isfendo.com

Conference Contribution - Poster Presentation (not in published proceedings)

Forbes, E. L., & Lokman, P. M. (2012, February). A spoon full of androgens makes the lipids go round. Poster session presented at the Centre for Reproduction and Genomics 4th Annual Research Colloquium, Dunedin, New Zealand.

2011

Journal - Research Article

Endo, T., Todo, T., Lokman, P. M., Kudo, H., Ijiri, S., Adachi, S., & Yamauchi, K. (2011). Androgens and very low density lipoprotein are essential for the growth of previtellogenic oocytes from Japanese eel, Anguilla japonica, in vitro. Biology of Reproduction, 84(4), 816-825. doi: 10.1095/biolreprod.110.087163

Akbaripasand, A., Nichol, E. C., Lokman, P. M., & Closs, G. P. (2011). Microhabitat use of a native New Zealand galaxiid fish, Galaxias fasciatus. New Zealand Journal of Marine & Freshwater Research, 45(1), 135-144. doi: 10.1080/00288330.2010.544044

Nafisi Bahabadi, M., Shoae, A., & Lokman, P. M. (2011). Effects of storage time, sex steroids and media composition on egg viability of rainbow trout (Oncorhynchus mykiss). Aquaculture, 315(3-4), 306-311. doi: 10.1016/j.aquaculture.2011.02.026

Conference Contribution - Published proceedings: Abstract

Setiawan, A., Wylie, M. J., Forbes, E. L., & Lokman, P. M. (2011). The effects of 11-ketotestosterone on migratory behaviour and sea water pre-adaptation in the shortfinned eels. Proceedings of the New Zealand Marine Sciences Society (NZMSS) Conference: Understanding, Managing, and Conserving our Marine Environment. (pp. 28). Retrieved from http://nzmss.org/assets/Conference/NZMSS2011AbstractsOralPresentations.pdf

Lokman, M., & Soyano, K. (2011). Plastic brains and phenotypic sex: Possible mechanisms of sex reversal in the kyusen wrasse, Halichoeres poecilopterus. Proceedings of the New Zealand Marine Sciences Society (NZMSS) Conference: Understanding, Managing, and Conserving our Marine Environment. (pp. 15). Retrieved from http://nzmss.org/assets/Conference/NZMSS2011AbstractsOralPresentations.pdf

Alqaisi, K., Grattan, D., Lamare, M., Wynne-Edwards, K., & Lokman, M. (2011). Steroidogenic activity in ovary and pyloric caeca during the annual reproductive cycle of common New Zealand starfish Patiriella regularis. Proceedings of the New Zealand Marine Sciences Society (NZMSS) Conference: Understanding, Managing, and Conserving our Marine Environment. (pp. 33). Retrieved from http://nzmss.org/assets/Conference/NZMSS2011AbstractsPosterPresentations.pdf

Ghosh, R., Hageman, K., Lokman, M., Lamare, M., Metcalf, V., & Davison, W. (2011). Fishing for contaminants in McMurdo Sound, Antarctica: Measuring physiological responses of PBDE exposure in Trematomus bernacchii. Proceedings of the 21st Society of Environmental Toxicology and Chemistry (SETAC) Europe Annual Meeting. Retrieved from http://www.eventure-online.com/eventure/publicAbstractView.do?id=150621&congressId=4515

Loke, S.-K., Lokman, M., Winikoff, M., McDonald, J., Wass, R., Purvis, M., Zeng, R., Matthaei, C., & Vlugter, P. (2011). Sustainable mobile learning: Experiences in a Zoology paper. In K. Shephard, T. Harland & A. Cohen (Eds.), Proceedings of the Spotlight on Teaching and Learning Colloquium. (pp. 30). Dunedin, New Zealand: HEDC, University of Otago. [Abstract]

2010

Journal - Research Article

Setiawan, A. N., & Lokman, P. M. (2010). The use of reference gene selection programs to study the silvering transformation in a freshwater eel Anguilla australis: A cautionary tale. BMC Molecular Biology, 11, 75. doi: 10.1186/1471-2199-11-75

Divers, S. L., McQuillan, H. J., Matsubara, H., Todo, T., & Lokman, P. M. (2010). Effects of reproductive stage and 11-ketotestosterone on LPL mRNA levels in the ovary of the shortfinned eel. Journal of Lipid Research, 51, 3250-3258. doi: 10.1194/jlr.M009027

Forbes, E. L., Preston, C. D., & Lokman, P. M. (2010). Zebrafish (Danio rerio) and the egg size versus egg number trade off: Effects of ration size on fecundity are not mediated by orthologues of the Fec gene. Reproduction, Fertility & Development, 22(6), 1015-1021. doi: 10.1071/RD09257

Cahill, P. L., Hurd, C. L., & Lokman, M. (2010). Keeping the water clean: Seaweed biofiltration outperforms traditional bacterial biofilms in recirculating aquaculture. Aquaculture, 306, 153-159. doi: 10.1016/j.aquaculture.2010.05.032

Tosaka, R., Todo, T., Kazeto, Y., Lokman, P. M., Ijiri, S., Adachi, S., & Yamauchi, K. (2010). Expression of androgen receptor mRNA in the ovary of Japanese eel, Anguilla japonica, during artificially induced ovarian development. General & Comparative Endocrinology, 168, 424-430. doi: 10.1016/j.ygcen.2010.05.005

Lokman, P. M., Kazeto, Y., Ozaki, Y., Ijiri, S., Tosaka, R., Kohara, M., … Divers, S. L., … Adachi, S. (2010). Effects of reproductive stage, GH, and 11-ketotestosterone on expression of growth differentiation factor-9 in the ovary of the eel, Anguilla australis. Reproduction, 139(1), 71-83. doi: 10.1530/REP-08-0454

Conference Contribution - Published proceedings: Full paper

Loke, S.-K., Lokman, M., Winikoff, M., McDonald, J., Wass, R., Purvis, M., Zeng, R., Matthaei, C., & Vlugter, P. (2010). Lessons in designing sustainable mobile learning environments. In C. H. Steel, M. J. Keppell, P. Gerbic & S. Housego (Eds.), Proceedings of the Australasian Society for Computers in Learning in Tertiary Education Conference. (pp. 565-569). ascilite. Retrieved from http://www.ascilite.org.au/conferences/sydney10/proceedings.htm

Conference Contribution - Published proceedings: Abstract

Ghosh, R., Hageman, K., Lokman, M., Lamare, M., Metcalf, V., & Davison, W. (2010). Fishing for contaminants in McMurdo Sound, Antarctica: Measuring physiological responses of PBDE exposure in Trematomus bernacchii. Proceedings of the 31st Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC). (pp. 233). Pensacola, FL: SETAC. Retrieved from http://portland.setac.org/sites/default/files/2010-Abstract-Book.pdf

Akbaripasand, A., Closs, G. P., & Lokman, M. (2010). Effects of invertebrate drift density on diet and growth of a galaxiid fish in three New Zealand streams. Proceedings of the Advancing the Science of Limnology and Oceanography (ASLO) & the North American Benthological Society (NABS) Joint Meeting. (pp. 3). Retrieved from http://www.aslo.org/santafe2010/

Ghosh, R., Hageman, K., Lamare, M., Lokman, M., Metcalf, V., & Davison, W. (2010). Fishing for contaminants in McMurdo Sound, Antarctica: Measuring physiological responses of PBDE exposure in Trematomus bernacchii. Proceedings of the Annual Antarctic Conference: A Taste of the Ice. (pp. 23). Christchurch, New Zealand: Antarctica New Zealand. [Abstract]

Conference Contribution - Poster Presentation (not in published proceedings)

Mills, K. P., Preston, C. D., Lokman, P. M., & Anderson, G. M. (2010, November-December). Impaired central insulin sensitivity in a rat model of polycystic ovary syndrome. Poster session presented at the Medical Sciences Congress: A New Decade of Discovery (MedSciNZ), Queenstown, New Zealand.

2009

Conference Contribution - Published proceedings: Abstract

Ghosh, R., Hageman, K., Björklund, E., Lamare, M., Metcalf, V., & Lokman, M. (2009). Fishing for contaminants in McMurdo Sound, Antarctica: Analytical method development. Proceedings of the Annual Antarctic Conference. (pp. 102). Christchurch, New Zealand: Antarctica New Zealand. [Abstract]

2008

Journal - Research Article

Kristensen, P. B., Closs, G. P., Lokman, P. M., & Grønkjær, P. (2008). Otolith formation, microstructure and daily increment validation in juvenile perch Perca fluviatilis. Journal of Fish Biology, 73(6), 1478-1483. doi: 10.1111/j.1095-8649.2008.02019.x

Conference Contribution - Published proceedings: Abstract

Endo, T., Todo, T., Lokman, P. M., Ijiri, S., Adachi, S., & Yamauchi, K. (2008). In vitro induction of oil droplet accumulation into previtellogenic ooctyes of Japanese eel, Anguilla japonica. Cybium. 32(2, Suppl.), (pp. 239-240). [Abstract]

Matsubara, H., Tanaka, H., Nomura, K., Kobayashi, T., Murashita, K., Kurokawa, T., … Lokman, M. P., … Ohta, H. (2008). Occurrence of spontaneously spermiating eels in captivity. Cybium. 32(2, Suppl.), (pp. 174-175). [Abstract]

Conference Contribution - Poster Presentation (not in published proceedings)

Setiawan, A. N., Lokman, P. M., & Divers, S. L. (2008, June). Changes in AR-α and AR-β mRNA levels in the liver if the shortfinned eel (Anguilla australis). Poster session presented at the Sixth International Symposium on Fish Endocrinology, Calgary, Canada.

Lokman, P. M., Kazeto, Y., Ijiri, S., Tosaka, R., Kohara, M., Divers, S. L., … Adachi, S. (2008, June). Growth and differentiation factor-9 in the ovary of the eel (Anguilla spp.): Stage dependence and hormonal control of expression. Poster session presented at the Sixth International Symposium on Fish Endocrinology, Calgary, Canada.

Conference Contribution - Verbal presentation and other Conference outputs

Kuecholl, L., Closs, G., & Lokman, M. (2008, November). Abundance and movement of brown trout (Salmo trutta) in relation to food supply and floods. Verbal presentation at the New Zealand Freshwater Sciences Society (NZFSS) Conference: Back to Science: The Importance of Fresh Water Science to Freshwater Management, New Plymouth, New Zealand.

Shoae, A., Setiawan, A. N., Whiting, T. Y., & Lokman, P. M. (2008, December). Insulin like growth factor-I gene expression in previtellogenic ovary of eel, Anguilla australis. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry 25th Anniversary General Meeting, Sydney, Australia.

Forbes, E. L., & Lokman, P. M. (2008, December). Metabolic gating of fecundity and previtellogenic follicle expression of growth differentiation factor 9 and bone morphogenetic protein 15 in the short-finned zebrafish (Danio reio). Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry 25th Anniversary General Meeting, Sydney, Australia.

Divers, S. L., McQuillan, H. J., Matsubara, H., Todo, T., & Lokman, P. M. (2008, June). Changes in ovarian lipoprotein lipase transcript abundance in the New Zealand shortfinned eel Anguilla australis during oogenesis and response to 11-ketotestosterone. Verbal presentation at the Sixth International Symposium on Fish Endocrinology, Calgary, Canada.

Reid, P. M., Divers, S. L., & Lokman, P. M. (2008, December). Effects of pituitary hormones on GDF-9, BMP-15 and StAR mRNA expression in the previtellogenic ovary of the New Zealand short-finned eel Anguilla australis. Verbal presentation at the Australian and New Zealand Society for Comparative Physiology and Biochemistry 25th Anniversary General Meeting, Sydney, Australia.

2007

Journal - Research Article

Setiawan, A. N., Davis, L. S., Darby, J. T., Lokman, P. M., Young, G., Blackberry, M. A., … Martin, G. B. (2007). Effects of artificial social stimuli on the reproductive schedule and hormone levels of yellow-eyed penguins (Megadyptes antipodes). Hormones & Behavior, 51, 46-53.

Lokman, P. M., George, K. A. N., Divers, S. L., Algie, M., & Young, G. (2007). 11-Ketotestosterone and IGF-I increase the size of previtellogenic oocytes from shortfinned eel, Anguilla australis, in vitro. Reproduction, 133, 955-967.

Wright, K. A., Woods, C. M. C., Gray, B. E., & Lokman, P. M. (2007). Recovery from acute, chronic and transport stress in the pot-bellied seahorse Hippocampus abdominalis. Journal of Fish Biology, 70, 1447-1457.

Conference Contribution - Published proceedings: Abstract

Setiawan, A. N., Reid, P. M., McGuire, S. H., Rolston, T. M., Downes, M., McQuillan, H. J., Divers, S. L., Mabuchi, A., & Lokman, P. M. (2007). Effects of 11-ketotestosterone on hepatic physiology of the shortfinned eel, Anguilla australis, in vivo. Endocrine Journal. 54(Suppl), (pp. 160). [Abstract]

2006

Journal - Research Article

Searle, T., Roberts, R. D., & Lokman, P. M. (2006). Effects of temperature on growth of juvenile blackfoot abalone, Haliotis iris Gmelin. Aquaculture Research, 37, 1441-1449.

Setiawan, A. N., Davis, L. S., Darby, J. T., Lokman, P. M., Young, G., Blackberry, M. A., … Martin, G. B. (2006). Hormonal correlates of parental behavior in yellow-eyed penguins (Megadyptes antipodes). Comparative Biochemistry & Physiology Part A, 145, 357-362.

Hammond, K. S., Hollows, J. W., Townsend, C. R., & Lokman, P. M. (2006). Effects of temperature and water calcium concentration on growth, survival and moulting of freshwater crayfish, Paranephrops zealandicus. Aquaculture, 251, 271-279.

Harwood, N. J., & Lokman, P. M. (2006). Fecundity of banded wrasse (Notolabrus fucicola) from Otago, Southern New Zealand. New Zealand Journal of Marine & Freshwater Research, 40(3), 467-476. doi: 10.1080/00288330.2006.9517436

2005

Chapter in Book - Research

Young, G., Kusakabe, M., Nakamura, I., Lokman, P. M., & Goetz, F. W. (2005). Gonadal steroidogenesis in teleost fish. In P. Melamed & N. Sherwood (Eds.), Molecular aspects of fish and marine biology (vol. 4): Hormones and their receptors in fish reproduction. (pp. 155-223). Singapore: World Scientific.

Journal - Research Article

Matsubara, H., Lokman, P. M., Kazeto, Y., Adachi, S., & Yamauchi, K. (2005). Serum steroid profiles in artificially maturing female Japanese eel, Anguilla japonica. Aquaculture, 243, 393-402.

2004

Journal - Research Article

Arai, T., Kotake, A., Lokman, P. M., Miller, M. J., & Tsukamoto, K. (2004). Evidence of different habitat use by New Zealand freshwater eels Anguilla australis and A. dieffenbachii, as revealed by otolith microchemistry. Marine Ecology Progress Series, 266, 213-225.

Poortenaar, C. W., Woods, C. M. C., James, P. J., Giambartolomei, F. M., & Lokman, P. M. (2004). Reproductive biology of female big-bellied seahorses. Journal of Fish Biology, 64, 717-725.

2003

Chapter in Book - Research

Lokman, P. M., Rohr, D. H., Davie, P. S., & Young, G. (2003). The physiology of silvering in anguillid eels: Androgens and control of metamorphosis from the yellow to silver stage. In K. Aida, K. Tsukamoto & K. Yamauchi (Eds.), Eel biology. (pp. 331-349). Tokyo: Springer.

Journal - Research Article

Matsubara, M., Lokman, P. M., Senaha, A., Kazeto, Y., Ijiri, S., Kambegawa, A., … Yamauchi, K. (2003). Synthesis and possible function of 11-ketotestosterone during oogenesis in eel (Anguilla spp.). Fish Physiology & Biochemistry, 28, 353-354.

Lokman, P. M., George, K. A. N., & Young, G. (2003). Effects of steroid and peptide hormones on in vitro growth of previtellogenic oocytes from eel, Anguilla australis. Fish Physiology & Biochemistry, 28, 283-285.

Arai, T., Kotake, A., Lokman, P. M., & Tsukamoto, K. (2003). Migratory history and habitat use by New Zealand freshwater eels Anguilla dieffenbachii and A. australis, as revealed by otolith microchemistry. Ichthyological Research, 50, 190-194.

Saito, K., Lokman, P. M., Young, G., Ozaki, Y., Matsubara, H., Okumura, H., … Yamauchi, K. (2003). Follicle-stimulating hormone β, luteinizing hormone β and glycoprotein hormone α subunit mRNA levels in artificially maturing Japanese eel Anguilla japonica and naturally maturing New Zealand longfinned eel Anguilla dieffenbachii. Fisheries Science, 69, 146-153.

McQuillan, H. J., Lokman, P. M., & Young, G. (2003). Effects of sex steroids, sex, and sexual maturity on cortisol production: An in vitro comparison of chinook salmon and rainbow trout interrenals. General & Comparative Endocrinology, 133, 154-163.

Lokman, P. M., Kazeto, Y., Ijiri, S., Young, G., Miura, T., Adachi, S., & Yamauchi, K. (2003). Ovarian mitochondrial cytochrome b mRNA levels increase with sexual maturity in freshwater eels (Anguilla spp.). Journal of Comparative Physiology B, 173, 11-19.

Ijiri, S., Kazeto, Y., Lokman, P. M., Adachi, S., & Yamauchi, K. (2003). Characterization of a cDNA encoding P-450 aromatase (CYP19) from Japanese eel ovary and its expression in ovarian follicles during induced ovarian development. General & Comparative Endocrinology, 130, 193-203.

2002

Journal - Research Article

Kusakabe, M., Kobayashi, T., Todo, T., Lokman, M., Nagahama, Y., & Young, G. (2002). Molecular cloning and expression during spermatogenesis of a cDNA encoding testicular 11β-hydroxylase (P450_11β) in rainbow trout (Oncorhynchus mykiss). Molecular Reproduction & Development, 62, 456-469.

Lokman, P. M., Harris, B., Kusakabe, M., Kime, D. E., Schulz, R. W., Adachi, S., & Young, G. (2002). 11-oxygenated androgens in female teleosts: Prevalence, abundance, and life history implications. General & Comparative Endocrinology, 129, 1-12.

2001

Journal - Research Article

Aoyama, J., Ishikawa, S., Otake, T., Mochioka, N., Suzuki, Y., Watanabe, S., … Lokman, P. M., … Tsukamoto, K. (2001). Molecular approach to species indentification of eggs with respect to determination of the spawning site of the Japanese eel Anguilla japonica. Fisheries Science, 67, 761-763.

Lokman, P. M., Wass, R. T., Suter, H. C., Scott, S. G., Judge, K. F., & Young, G. (2001). Changes in steroid hormone profiles and ovarian histology during salmon pituitary-induced vitellogenesis and ovulation in female New Zealand longfinned eels, Anguilla dieffenbachii Gray. Journal of Experimental Zoology, 289, 119-129.

Rohr, D. H., Lokman, P. M., Davie, P. S., & Young, G. (2001). 11-Ketotestosterone induces silvering-related changes in immature female short-finned eels, Anguilla australis. Comparative Biochemistry & Physiology Part A, 130, 701-714.

Conference Contribution - Published proceedings: Abstract

Lokman, P. M., & Young, G. (2001). 11-Oxygenated androgens in female fishes: prevalence and possible function and site of synthesis. Proceedings of the 44th Annual Scientific Meetings. 44(Section 3). Australia: Endocrine Society of Australia. [Abstract]

Young, G., Rohr, D. H., Davie, P. S., & Lokman, P. M. (2001). The physiology of silvering in anguillid eels: androgens and control of metamorphosis from the yellow to the silver stage. In K. Aida, K. Tsukamoto & Y. Yamauchi (Eds.), Proceedings of the International Symposium on Advances in Eel Biology. (pp. 71-73). Tokyo, Japan. [Abstract]

Teeuw, W. J., Lokman, P. M., McQuillan, J., Scott, S. G., & Young, G. (2001). The acute stress response in salmonid fishes, Oncorhynchus spp. Proceedings of the 44th Annual Scientific Meetings. 44(Section 3), (pp. 29). Australia: Endocrine Society of Australia. [Abstract]

Lokman, P. M., Adachi, S., Young, G., & Yamauchi, K. (2001). The reproductive physiology of New Zealand freshwater eels (Anguilla australis and A. dieffenbachii). In K. Aida, K. Tsukamoto & K. Yamauchi (Eds.), Proceedings of the International Symposium on Advances in Eel Biology. (pp. 68-70). Tokyo, Japan. [Abstract]

Lokman, P. M., & Young, G. (2001). Ovarian mitochondrial cytochrome B mRNA levels increase with sexual maturity in freshwater eels (Anguilla spp). Proceedings of the 44th Annual Scientific Meetings. 44(Section 3), (pp. 33). Australia: Endocrine Society of Australia. [Abstract]

2000

Journal - Research Article

Lokman, P. M., & Young, G. (2000). Induced spawning and early ontogeny of New Zealand freshwater eels (Anguilla dieffenbachii and A. australis). New Zealand Journal of Marine & Freshwater Research, 34, 135-145.

Conference Contribution - Published proceedings: Full paper

Lokman, P. M., Watari, H., Okumura, H., Kazeto, Y., Young, G., Adachi, S., & Yamauchi, K. (2000). Spontaneous and induced oogenesis between oocytes from New Zealand longfinned Japanese eels - morphological differences. In B. Norberg, O. S. Kjesbu, G. L. Taranger, E. Andersson & S. O. Stefansson (Eds.), Reproductive Physiology of Fish. (pp. 308). Bergen: Institute of Marine Research. [Full Paper]

Matsubara, H., Kazeto, Y., Lokman, P. M., Okumura, H., Ijiri, S., Young, G., & Adachi, S. (2000). Comparison of mRNA levels of ovarian steroidogenic enzymes between artificially maturing Japanese and naturally maturing New Zealand eels. In B. Norberg, O. S. Kjesbu, G. L. Taranger, E. Andersson & S. O. Stefansson (Eds.), Reproductive Physiology of Fish. (pp. 181). Bergen: Institute of Marine Research. [Full Paper]

Conference Contribution - Published proceedings: Abstract

Lokman, P. M., Harris, B., Kusakabe, M., Kime, D. E., Schulz, R. W., Adachi, S., & Young, G. (2000). Prevalence of 11-oxygenated androgens in female teleosts. In W. W. Dickhoff & P. Swanson (Eds.), 4th International Symposium on Fish Endocrinology. (pp. 55-56). [Abstract]

1999

Journal - Research Article

Ikeuchi, T., Nagae, M., Lokman, P. M., Adachi, S., & Yamauchi, K. (1999). Specific antibodies against synthetic oligopeptides of eel GTH/TSH subunits. Fisheries Science, 65, 871-877.

1998

Journal - Research Article

Lokman, P. M., & Young, G. (1998). Gonad histology and plasma steroid profiles in wild New Zealand eels (Anguilla dieffenbachii and A. australis) before and at the onset of the natural spawning migration. II. Males. Fish Physiology & Biochemistry, 19, 339-347.

Lokman, P. M., Vermeulen, G. J., Lambert, J. G., & Young, G. (1998). Gonad histology and plasma steroid profiles in wild New Zealand freshwater eels (Anguilla dieffenbachii and A. australis) before and at the onset of the natural spawning migration. I. Females. Fish Physiology & Biochemistry, 19, 325-338.

Lokman, P. M., & Young, G. (1998). An intersexual migratory ("silver") longfinned New Zealand eel (Anguilla dieffenbachii) and its gonadal response to treatment with salmon pituitary homogenate. Journal of Fish Biology, 52, 547-555.

1997

Journal - Research Article

Lokman, P. M., Irwin, J. L., Blackwell, L. F., Davie, P. S., Thomas, M., & Young, G. (1997). A simple two-step method for the conversion of [H-3]cortisol to [3H]-11-ketotestosterone. Steroids, 62(10), 655-658.

Davidson, G. W., Thorarensen, H. T., Lokman, P. M., & Davie, P. S. (1997). Stress of capture and captivity in kahawai Arripis trutta (Bloch and Schneider) (Perciformes: Arripidae). Comparative Biochemistry & Physiology Part A, 118(4), 1405-1410.

Conference Contribution - Published proceedings: Abstract

Ikeuchi, T., Lokman, P. M., Adachi, S., & Yamauchi, K. (1997). Search for gonadotropin I cells in pituitaries of eels. Proceedings of the 22nd Meeting of the Japanese Society for Comparative Endocrinology. 34. Sado, Japan. [Abstract]

Lokman, P. M., Kazeto, Y., Ijiri, S., Adachi, S., & Yamauchi, K. (1997). Eel ovarian 20β-hydroxysteroid dehydrogenase: molecular cloning and gene expression during artificial maturation of the Japanese eel, Anguilla japonica. In S. Kawashima & S. Kikuyama (Eds.), Advances in Comparative Endocrinology (Proceedings of the XIIIth International Congress of Comparative Endocrinology). (pp. 1517-1521). Bologna, Italy: Monduzzi Editore. [Abstract]

1995

Journal - Research Article

Lokman, P. M., & Young, G. (1995). In vitro biosynthesis of oestradiol - 17b and 17a, 20b-dihydroxy-4-pregnen-3-one by vitellogenic ovarian follicles from migrating New Zealand longfinned eels (Anguilla dieffenbachii). Aquaculture, 135, 17-26.

Conference Contribution - Published proceedings: Full paper

Lokman, P. M., & Young, G. (1995). Plasma sex steroids in female New Zealand freshwater eels (Anguilla spp.) before and at the onset of the natural spawning migration. In F. Goetz & P. Thomas (Eds.), Proceedings of the Fifth International Symposium on the Reproductive Physiology of Fish, Fish Symposium. (pp. 221-223). Austin, Texas. [Full Paper]