James Haddy

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James Haddy


Room S333 , Science Building

+61 3 6324 3828 (phone)

+61 3 6324 3804 (fax)

Dr James Haddy's area of expertise is in conducting field and laboratory based research on the population dynamics, life history ecology and physiology (reproduction and stress endocrinology) of aquatic fauna. The majority of his work has focused on important recreational and commercial species of fish, crustaceans and molluscs. As a result, James has expertise in fisheries research and stock assessment modelling, from the initial collection of data (field biology) through to computer intensive quantitative modelling.  Some of the key methodological techniques he has expertise in includes, fisheries field sampling, (gillnets, seines, traps, electro-fishing, fyke nets), hard-parts analysis (e.g. otoliths, scales, shells), reproductive analyses (macroscopic and histology), dietary analysis, tagging, and hormonal radioimmunoassays.  Currently, James teaches undergraduate units covering aquatic biology, fisheries biology and population dynamics, fisheries assessment and field research techniques for aquatic ecosystems.


Before joining the University of Tasmania, James was a fisheries scientist for New South Wales Fisheries and Queensland's Department of Primary Industries.

Career summary


  • PhD (2000):  Reproductive biology and endocrinology of black bream Acanthopagrus butcheri. University of Tasmania
  • BSc (1st Class Hons) (1995): Timecourse of in vitro 17β-estradiol secretion by isolated ovarian follicles of the rainbow trout (Oncorhynchus mykiss). University of Tasmania

Administrative expertise

James is also the Course Coordinator for all unit based courses in IMAS Launceston.


Fisheries, Marine Biology, Population Dynamics

Teaching expertise

Currently, James teaches into 5 units covering aquatic biology, fisheries biology and population dynamics, fisheries assessment, fishing industry and operations, and field research techniques for aquatic ecosystems.

Teaching responsibility

Currently, James co-ordinates 4 units covering aquatic biology (JFA101), fisheries biology and population dynamics (JFA209; JFA515), fisheries assessment (JFA308; JFA527) and field research techniques for aquatic ecosystems (JFA219).

View more on Dr James Haddy in WARP


  • Population Dynamics/Life History Biology
  • Reproductive Physiology
  • Stress Physiology
  • Sustainable Exploitation/Fisheries Assessment

Research Themes

James's research aligns to the University's research themes of Marine, Antarctic and MaritimeEnvironment, and Resources and Sustainability.  His work is focuses on improving the understanding of life history biology, ecology and population dynamics of exploited taxa so informed management decisions can be made to contribute to the long term sustainability of Australia's fisheries resources.

Fields of Research

  • Aquaculture (300501)
  • Aquaculture and fisheries stock assessment (300502)
  • Fisheries management (300505)
  • Fisheries sciences (300599)
  • Fish pests and diseases (300503)
  • Zoology (310999)
  • Engineering design (401001)
  • Comparative physiology (310912)
  • Marine and estuarine ecology (incl. marine ichthyology) (310305)
  • Conservation and biodiversity (410401)
  • Population ecology (310307)
  • Ocean engineering (401503)
  • Climate change law (480202)
  • Climate change processes (370201)

Research Objectives

  • Fisheries - aquaculture (100299)
  • Fisheries - recreational freshwater (100301)
  • Wild caught fin fish (excl. tuna) (100305)
  • Expanding knowledge in the environmental sciences (280111)
  • Aquaculture crustaceans (excl. rock lobster and prawns) (100201)
  • Coastal or estuarine biodiversity (180203)
  • Biofuel energy (170801)
  • Expanding knowledge in the biological sciences (280102)
  • Social impacts of climate change and variability (190103)
  • Assessment and management of terrestrial ecosystems (180601)
  • Terrestrial biodiversity (180606)
  • Evaluation, allocation, and impacts of land use (180603)
  • Aquaculture fin fish (excl. tuna) (100202)
  • Hydrogen production from renewable energy (170704)
  • Assessment and management of coastal and estuarine ecosystems (180201)
  • Ecosystem adaptation to climate change (190102)


Total publications


Journal Article

(19 outputs)
2021Jantawongsri K, Norregaard RD, Bach L, Dietz R, Sonne C, et al., 'Histopathological effects of short-term aqueous exposure to environmentally relevant concentration of lead (Pb) in shorthorn sculpin (Myoxocephalus scorpius) under laboratory conditions', Environmental Science and Pollution Research, 28, (43) pp. 61423-61440. ISSN 0944-1344 (2021) [Refereed Article]

DOI: 10.1007/s11356-021-14972-6 [eCite] [Details]

Citations: Scopus - 1Web of Science - 1

Co-authors: Jantawongsri K; Eriksen R; Nowak B


2020Stocker CW, Haddy J, Lyle J, Nowak BF, 'Muscle melanisation of southern sand flathead (Platycephalus bassensis) in the Tamar Estuary, Tasmania, Australia', Environmental Pollution, 256 Article 113452. ISSN 0269-7491 (2020) [Refereed Article]

DOI: 10.1016/j.envpol.2019.113452 [eCite] [Details]

Citations: Scopus - 1

Co-authors: Stocker CW; Lyle J; Nowak BF


2020Stoessel DJ, van Rooyen AR, Beheregaray LB, Raymond SMC, van Wyk B, et al., 'Population genetic structure of estuary perch (Percalates colonorum Gunther) in south-eastern Australia', Marine and Freshwater Research, 72, (2) pp. 263-274. ISSN 1323-1650 (2020) [Refereed Article]

DOI: 10.1071/MF20024 [eCite] [Details]

Citations: Web of Science - 1


2018Setyawan E, Sianipar AB, Erdmann MV, Fischer AM, Haddy JA, et al., 'Site fidelity and movement patterns of reef manta rays (Mobula alfredi: Mobulidae) using passive acoustic telemetry in northern Raja Ampat, Indonesia', Nature Conservation Research, 3, (4) pp. 1-15. ISSN 2500-008X (2018) [Refereed Article]

DOI: 10.24189/ncr.2018.043 [eCite] [Details]

Citations: Scopus - 19Web of Science - 17

Co-authors: Fischer AM


2018Sweetman PC, Haddy JA, Robertson SG, 'Multi-decadal variation in cohort specific sex ratios and otolith increment growth characteristics of juvenile blue grenadier (Macruronus novaezelandiae)', Fisheries Research, 201 pp. 79-87. ISSN 0165-7836 (2018) [Refereed Article]

DOI: 10.1016/j.fishres.2018.01.009 [eCite] [Details]

Citations: Scopus - 1Web of Science - 1

Co-authors: Sweetman PC


2015Doubleday ZA, Izzo C, Haddy JA, Lyle JM, Ye Q, et al., 'Long-term patterns in estuarine fish growth across two climatically divergent regions', Oecologia, 179, (4) pp. 1079-1090. ISSN 0029-8549 (2015) [Refereed Article]

DOI: 10.1007/s00442-015-3411-6 [eCite] [Details]

Citations: Scopus - 22Web of Science - 21

Co-authors: Lyle JM


2014Courtney AJ, Campbell MJ, Tonks ML, Roy DP, Gaddes SW, et al., 'Effects of bycatch reduction devices in Queensland's (Australia) deepwater eastern king prawn (Melicertus plebejus) trawl fishery', Fisheries Research, 157 pp. 113-123. ISSN 0165-7836 (2014) [Refereed Article]

DOI: 10.1016/j.fishres.2014.03.021 [eCite] [Details]

Citations: Scopus - 9Web of Science - 9


2014Pitman LR, Haddy JA, Kloser RJ, 'Response to comment on 'fishing and fecundity: The impact of exploitation on the reproductive potential of a deep-water fish, orange roughy (Hoplostethus atlanticus)'', Fisheries Research: An International Journal on Fishing Technology, Fisheries Science and Fisheries Management, 155, (July) pp. 196-197. ISSN 0165-7836 (2014) [Letter or Note in Journal]

DOI: 10.1016/j.fishres.2014.03.005 [eCite] [Details]


2013Jatmiko I, Haddy J, Williams M, 'Comparison of age estimates from various hard parts for redfin perch, Perca fluviatilis, in Tasmania', Indonesian Fisheries Research Journal, 19, (1) pp. 47-54. ISSN 0853-8980 (2013) [Non Refereed Article]

[eCite] [Details]

Co-authors: Williams M

2013Pitman LR, Haddy JA, Kloser RJ, 'Fishing and fecundity: The impact of exploitation on the reproductive potential of a deep-water fish, orange roughy (Hoplostethus atlanticus)', Fisheries Research: An International Journal on Fishing Technology, Fisheries Science and Fisheries Management, 147 pp. 312-319. ISSN 0165-7836 (2013) [Refereed Article]

DOI: 10.1016/j.fishres.2013.06.008 [eCite] [Details]

Citations: Scopus - 7Web of Science - 6


2012Gray CA, Haddy JA, Fearman J, Barnes LM, Macbeth WG, et al., 'Reproduction, growth and connectivity among populations of Girella tricuspidata (Pisces: Girellidae)', Aquatic Biology, 16, (1) pp. 53 - 68. ISSN 1864-7790 (2012) [Refereed Article]

DOI: 10.3354/ab00428 [eCite] [Details]

Citations: Scopus - 26Web of Science - 25

Co-authors: Fearman J


2012Ochwada -Doyle F, Roberts D, Gray C, Barnes L, Haddy J, et al., 'Characterizing the biological traits and life history of Acanthopagrus (Sparidae) hybrid complexes: implications for conservation and management', Journal of Fish Biology, 81, (5) pp. 1540-1558. ISSN 0022-1112 (2012) [Refereed Article]

DOI: 10.1111/j.1095-8649.2012.03401.x [eCite] [Details]

Citations: Scopus - 6Web of Science - 6

Co-authors: Fearman J


2005Broadhurst MK, Gray CA, Reid DD, Wooden MEL, Young DJ, et al., 'Mortality of key fish species released by recreational anglers in an Australian estuary', Journal of Experimental Marine Biology and Ecology, 321, (2) pp. 171-179. ISSN 0022-0981 (2005) [Refereed Article]

DOI: 10.1016/j.jembe.2005.02.001 [eCite] [Details]

Citations: Scopus - 60Web of Science - 59


2000Haddy JA, Pankhurst NW, 'The effects of salinity on reproductive development, plasma steroid levels, fertilisation and egg survival in black bream Acanthopagrus butcheri', Aquaculture, 188, (1-2) pp. 115-131. ISSN 0044-8486 (2000) [Refereed Article]

DOI: 10.1016/S0044-8486(00)00326-4 [eCite] [Details]

Citations: Scopus - 60Web of Science - 54

Co-authors: Pankhurst NW


2000Haddy JA, Pankhurst NW, 'The efficacy of exogenous hormones in stimulating changes in plasma steroids and ovulation in wild black bream Acanthopagrus butcheri is improved by treatment at capture', Aquaculture, 191, (4) pp. 351-366. ISSN 0044-8486 (2000) [Refereed Article]

DOI: 10.1016/S0044-8486(00)00445-2 [eCite] [Details]

Citations: Scopus - 26Web of Science - 20

Co-authors: Pankhurst NW


2000Hobby AC, Pankhurst NW, Haddy JA, 'The effect of short term confinement stress on binding characteristics of sex steroid binding protein (SBP) in female black bream (Acanthopagrus butcheri) and rainbow trout (Oncorhynchus mykiss)', Comparative Biochemistry and Physiology. Part A: Molecular and Integrative Physiology, 125, (1) pp. 85-94. ISSN 1095-6433 (2000) [Refereed Article]

DOI: 10.1016/S1095-6433(99)00156-7 [eCite] [Details]

Citations: Scopus - 14Web of Science - 12

Co-authors: Pankhurst NW


1999Haddy JA, Pankhurst NW, 'Stress-induced changes in concentrations of plasma sex steroids in black bream', Journal of Fish Biology, 55, (6) pp. 1304-1316. ISSN 0022-1112 (1999) [Refereed Article]

DOI: 10.1111/j.1095-8649.1999.tb02077.x [eCite] [Details]

Citations: Scopus - 61Web of Science - 59

Co-authors: Pankhurst NW


1998Haddy JA, Pankhurst NW, 'Annual change in reproductive condition and plasma concentrations of sex steroids in black bream, Acanthopagrus butcheri (Munnro) (Sparidae)', Marine and Freshwater Research, 49, (5) pp. 389-397. ISSN 1323-1650 (1998) [Refereed Article]

DOI: 10.1071/MF97239 [eCite] [Details]

Citations: Scopus - 47Web of Science - 44

Co-authors: Pankhurst NW


1998Haddy JA, Pankhurst NW, 'The dynamics of in vitro 17 beta-estradiol secretion by isolated ovarian follicles of the rainbow trout (Oncorhynchus mykiss)', Fish Physiology and Biochemistry, 18, (3) pp. 267-275. ISSN 0920-1742 (1998) [Refereed Article]

DOI: 10.1023/A:1007734831563 [eCite] [Details]

Citations: Scopus - 13Web of Science - 12

Co-authors: Pankhurst NW



(1 outputs)
2009Goldsworthy LC, Kow F, Haddy JA, Owen C, 'Alternative Fuels for Fishing Vessels ', FRDC, Canberra, pp. 158. ISBN 978-1--86295-509-7 (2009) [Authored Other Book]

[eCite] [Details]

Co-authors: Goldsworthy LC; Kow F

Conference Publication

(2 outputs)
2016Setyawan E, Sianipar AB, Mambrasar R, Lewis S, Beale C, et al., 'Large-scale movement and habitat range of reef manta (Manta alfredi) in northern Raja Ampat waters, West Papua, Indonesia', Abstracts of the 13th International Coral Reef Symposium, 19-24 June, 2016, Honolulu, Hawaii (2016) [Conference Extract]

[eCite] [Details]

Co-authors: Fischer AM

2000Haddy JA, Pankhurst NW, 'The effect of salinity on plasma steroid concentrations in adult male and female black bream Acanthapaogrus butcheri (Sparidae)', Proceedings of the 6th International Symposium of the Reproductive Physiology of Fish, July 1999, Bergen, Norway, pp. 414. ISBN 82-7461-048-2 (2000) [Conference Extract]

[eCite] [Details]

Co-authors: Pankhurst NW

Grants & Funding

Funding Summary

Number of grants


Total funding



Baseline Survey of the Blue Economy Zone (Phase II) (2021)$220,606
Provide a comprehensive baseline study of the Blue Economy Zone for offshore/high energy aquaculture activities and energy generation. This will include the first (preliminary) site assessment and inform about more robust site selection procedures, environmental and operational monitoring strategies. This site assessment will then form a basis for the development of targeted projects guide the assessment of R&D activities offered in support of RP1-RP5 outputs (for RP4 it will support milestones 4.1, 4.2 and 4.3).
Blue Economy CRC Co ($220,606)
General Projects
Administered By
University of Tasmania
Research Team
Penesis I; Nader JP; Rawlinson NJF; Haddy JA; Lambert CS
Developing a cost-effective monitoring regime and stock assessment for Sand Flathead in Tasmania (2020 - 2023)$343,700
Sand Flathead account for well over half of the total catch (by numbers) taken by marine recreational fishersin Tasmania and represent the mainstay of Tasmania's recreational fishery. Furthermore, since therecreational catch of sand flathead is more than 20 times the commercial catch, trends in commercial catchand catch rates are of little value in inferring changes in stock status. This has meant that fishery independentor novel assessment methods are required. To date, IMAS has implemented a research program focused onsand flathead in the south-east of the state that provides a spatially restricted, perspective and semiquantitativeevaluation of stock condition. Given the significance of the species and a status of 'depleting' inthe latest stock assessment report, there is a need to implement a more comprehensive stock monitoringapproach throughout the state that can support the development of a spatially explicit quantitative stockassessment model. There is also a need to determine the appropriate spatial resolution to apply to the stockassessment model. As such, there is a need to understand the extent of adult movement and ontogeneticconnectivity of regional sub-populations of sand flathead throughout Tasmania. In addition, by collation ofbiological data sets from historical studies and surveys conducted around Tasmania the extent and directionof potential changes in population size structures, and life history characteristics will be investigated. Wherepossible collated biological data will be used to assess spatial and temporal changes in life historycharacteristics to assess the implications of selective excessive fishing pressure and/or past and futureclimate change effects for this species.
Fisheries Research & Development Corporation ($343,700)
Grant-Annual Open Call Round
Administered By
University of Tasmania
Research Team
Tracey S; Haddy JA; Lyle JM; Hartmann K; Moreno DA; Krueck N; Ewing G
2020 - 2023
Opportunities and impacts of range extending scalefish species: understanding population dynamics, ecosystem impacts and management needs (2019 - 2020)$249,587
Species-level responses to ocean warming is a priority research area as they underpin the structure and function of marine ecosystems and the productivity of fisheries that operate within them.There are a number of range extending species that have become increasingly abundant in Tasmanian waters, providing new fishing opportunities for recreational and, to a lesser extent, commercial fishers. Species in this group include Pink Snapper, King George Whiting and Yellowtail Kingfish. While King George Whiting are known to spawn off the north coast it is unclear as to whether the other species have or are likely to become established as self-sustaining populations in Tasmanian waters or simply persist as spill-over from populations that are centered off mainland Australia. If the former is the case, it will be especially important to consider population attributes such as growth, mortality and reproductive dynamics relevant to the Tasmanian populations when developing and refining management arrangements.In addition, the broader ecosystem impacts of such range extending species, including competition with species at similar trophic levels, are unknown but could have consequences for other recreationally and commercially important species. Understanding these relationships will have benefits for the assessment and management of the Tasmanian recreational fishery more generally.
Fisheries Research & Development Corporation ($249,587)
Administered By
University of Tasmania
Research Team
Tracey S; Lyle JM; Haddy JA; Pecl GT; Pethybridge H
2019 - 2020

Research Supervision

James has supervised a total of 20 students, of these 18 students were studying a one year research project associated with either a Masters of Applied science with Honours or a Bachelor of applied science with Honours.  He is also currently supervising one PhD student and has supervised one other PhD to full completion.






PhDA Study of the Relationship between Heavy Metal Concentrations and Muscle Melanisation in Tasmanian;;Southern Sand Flathead (Platycephalus bassensis)2019


PhDBiology and Fisheries Assessment of the Arabian Pandora (Pagellus affinis) (Boulenger, 1887) in the Arabian Sea, Sultanate of Oman
Candidate: Fatma Rashid Hilal Al-Kiyumi