Higher Degree by Research Candidate
School of Biological Sciences
Faculty of Sciences
PhD candidate of fish/fishery biology in the Gillanders Aquatic Ecology Lab.
KEY RESEARCH INTERESTS:
- Use of intrinsic markers, such as chemical signatures in hard and soft tissues, for unearthing physiology, past environmental conditions and population dynamics in fish species.
- Experimental development of biogeochemical tracers and investigating physiological responses.
- Ecological modelling for mapping temporal and inter-regional variation and responses to environmental change for sustainable fishery management.
Otoliths are important sensory structures and are used extensively in fish and fishery science as recorders of past biology, environments and migrations. My honours project (one year program) focused on the effects of increasing carbon dioxide (CO2) and temperatures on the development (size and shape) and chemistry of ear bones (otoliths) in fish.
For my PhD, I'm interested in the utility of stable carbon isotopes (δ13C) in otoliths as biomarkers of metabolic rates. This has involved both experimental and field studies of temperate demersal fish species, Australiasian snapper. Respirometry and isotope-ratio mass spectrometry (IRMS) techniques were used to validate this relationship. Furthermore, I am interested in reconstructing multi-decadal growth chronologies to identify inter-annual and inter-regional variation and the effect of environmental factors and population dynamics.
Language Competency English Can read, write, speak, understand spoken and peer review
Date Institution name Country Title 2014 - 2014 University of South Australia Australia Bachelor of Science (Honours) 2009 - 2013 University of Adelaide Australia Bachelor of Science 2009 - 2013 University of South Australia Australia Bachelor of Laws
Year Citation 2019 Martino, J., Doubleday, Z., & Gillanders, B. (2019). Metabolic effects on carbon isotope biomarkers in fish. Ecological Indicators, 97, 10-16.
2019 Martino, J., Fowler, A., Doubleday, Z., Grammer, G., & Gillanders, B. (2019). Using otolith chronologies to understand long-term trends and extrinsic drivers of growth in fisheries. Ecosphere, 10(1), 19 pages.
2017 Martino, J., Doubleday, Z., Woodcock, S., & Gillanders, B. (2017). Elevated carbon dioxide and temperature affects otolith development, but not chemistry, in a diadromous fish. Journal of Experimental Marine Biology and Ecology, 495, 57-64.
DOI Scopus3 WoS3
Year Citation 2018 Martino, J. C., Doubleday, Z., & Gillanders, B. (2018). Stable carbon isotopes as metabolic biomarkers. In x. Keelung, Taiwan. 2018 Martino, J. C. (2018). Long-term, inter-regional variation and drivers of growth in an iconic fishery species. In ASFB. Melbourne, Australia. 2016 Martino, J. C., Doubleday, Z., Fowler, A., & Gillanders, B. (2016). Validating isotopes as metabolic tracers in otoliths. In x. Riga, Latvia.
Year Citation — Martino, J. (n.d.). Respirometry data_figshare.xlsx.
- Australian Postgraduate Award (APA)
- SARDI Science Bursary
2016 - 2018
- Practical Demonstrator - Zoology II
- Assessments - Freshwater Ecology III, Foundations in Marine Biology III, Science or Fiction (Marine Biology) I
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