D. Stewart Fielder

ORCID: 0000-0002-4519-2769
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About
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Research Areas
  • Aquaculture Nutrition and Growth
  • Fish Ecology and Management Studies
  • Marine and fisheries research
  • Fish Biology and Ecology Studies
  • Reproductive biology and impacts on aquatic species
  • Identification and Quantification in Food
  • Ichthyology and Marine Biology
  • Aquaculture disease management and microbiota
  • Environmental DNA in Biodiversity Studies
  • Coral and Marine Ecosystems Studies
  • Marine Bivalve and Aquaculture Studies
  • Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
  • Aquatic life and conservation
  • Crustacean biology and ecology
  • Physiological and biochemical adaptations
  • Genetic diversity and population structure
  • Microplastics and Plastic Pollution
  • Marine animal studies overview
  • Fish biology, ecology, and behavior
  • Microbial Community Ecology and Physiology
  • Parasite Biology and Host Interactions
  • Aquatic Ecosystems and Phytoplankton Dynamics
  • Cardiac electrophysiology and arrhythmias
  • Nanoparticles: synthesis and applications
  • Sperm and Testicular Function

New South Wales Department of Primary Industries
2013-2023

KLE Society Hospital
2018

Sir Ganga Ram Hospital
2018

University of Tasmania
2001-2005

The supply of quality juveniles via land-based larviculture represents a major bottleneck to the growing finfish aquaculture industry. As microbiome plays key role in animal health, this study aimed assess microbial community associated with early larval development commercially raised Yellowtail Kingfish (Seriola lalandi). We used qPCR and 16S rRNA gene amplicon sequencing monitor changes S. lalandi from larvae juveniles. observed an increase bacterial load during development, which...

10.1111/1751-7915.13323 article EN cc-by Microbial Biotechnology 2018-12-01

MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 328:237-247 (2006) - doi:10.3354/meps328237 Key habitat and home range of mulloway Argyrosomus japonicus in a south-east Australian estuary: finding estuarine niche optimise stocking Matthew W. Taylor1,*, Shawn D. Laffan1, Stewart Fielder2, Iain M. Suthers1 1School Biological, Earth Environmental Science,...

10.3354/meps328237 article EN Marine Ecology Progress Series 2006-12-20

The responsible approach to marine stock enhancement is a set of principles aimed at maximising the success and benefits artificially re‐stocking depleted fisheries. such an are evident in 400% increase survival stocked striped mullet Hawaii through refinement release techniques, however financially or temporally constrained stocking programs Australia have not adhered all principles. A pragmatic address these proposed, using international examples Australian finfish pilot stockings...

10.1111/j.0022-1112.2005.00809.x article EN Journal of Fish Biology 2005-08-01

Juvenile mulloway Argyrosomus japonicus (54·6 ± 4·6 mm total length, mean s . e .) were immersed in a range of oxytetracycline (OTC) solutions ranging between 0–600 mg l −1 salinities 5 (diluted sea water) and 35 (undiluted water), alizarin complexone (ALC) 0–60 undiluted water, for 6, 12 24 h. Optimal marking conditions 600 OTC h salinity 5, 30 ALC respectively. Mark quality (MQ) was assessed using score 0–3 both otoliths anal fin spines, with >2 found to be acceptable adequate mark...

10.1111/j.0022-1112.2005.00678.x article EN Journal of Fish Biology 2005-03-31

This paper reports on experiments conducted to examine the combined effects of salinity and potassium concentration survival growth juvenile mulloway (Argyrosomus japonicus, Temminck Schlegel) in inland saline groundwater. Three separate were 20 (±1)°C water. In first experiment, held 60 L aquaria (triplicate) with salinities 5, 15, 25 or 35 g L−1 concentrations 20%, 40%, 60% 80% present oceanic water equivalent a 4 × factorial combination for 7 days. Response surface contour diagrams...

10.1111/j.1365-2109.2006.01525.x article EN Aquaculture Research 2006-06-09

Abstract.— Tko experiments were conducted to determine the effects of salinity on growth and survival mulloway Argyrosomus japonicus larvae juveniles. First, 6‐d‐old stocked into different salinities (5, 12.5, 20, 27.5 35 ppt) for 14 d. Larvae grew at all salinities, but based results survival, optimum range 20‐d‐old is 5–12.5 ppt. During this experiment held in experimental infested by a dinoflagellate ectoparasite, Amyloodinium sp. Degree infestation was affected salinity. There very low...

10.1111/j.1749-7345.1999.tb00689.x article EN Journal of the World Aquaculture Society 1999-09-01

Abstract Captive breeding programs and aquaculture production have commenced worldwide for the globally distributed yellowtail kingfish ( Seriola lalandi ), captive bred fingerlings are being shipped from Southern Hemisphere to be farmed in Northern Hemisphere. It was recently proposed that Pacific S . comprise at least three distinct species diverged more than 2 million years ago. Here, we tested hypothesis of different “species” using novel genomic data (namely single nucleotide...

10.1038/s41598-017-07419-x article EN cc-by Scientific Reports 2017-08-18

The fish gut microbiome is impacted by a number of biological and environmental factors including feed formulations. Unlike mammals, vertical transmission largely absent in thus little known about how the initially colonized during hatchery rearing nor stability throughout growout stages. Here we investigate various microbial-rich surfaces from built environment “BE” influence development mucosal (gill, skin, digesta) an economically important marine fish, yellowtail kingfish, Seriola...

10.3389/fmars.2021.676731 article EN cc-by Frontiers in Marine Science 2021-05-13

Poor swimbladder inflation leads to low fish survival due resulting spinal deformities and the inability feed develop normally. Failure of may be attributed inappropriate range abiotic conditions. This study investigated effects temperature, light source intensity, oxygen conditions on initial inflation, growth yellowtail kingfish Seriola lalandi larvae. The consisted four separate trials including (21.5°C) high (24.5°C) temperatures, natural artificial sources, (1000 lux) (32 000...

10.1111/are.12097 article EN Aquaculture Research 2012-12-24

Mulloway (Argyrosomus japonicus) is an emerging aquaculture species in Australia, but there a need to improve the production technology and lower costs, including those associated with larval rearing live feeds. Three experiments were conducted determine appropriate weaning strategies from feeds, rotifers (Brachionus plicatilis) Artemia, cheaper formulated pellet diets. Experiment 1 examined effects of feeding Artemia at different levels [0%, 50% or 100% ration fed 18 days after hatching...

10.1111/j.1365-2109.2010.02519.x article EN Aquaculture Research 2010-06-09

Surveys of larval fishes require accurate identifications larvae, which are essential to understand early life history fish, fish ecology and fisheries. However, the identification requires microscopic examination that is substantially more difficult than juvenile adult fishes, as many stages remain undescribed. Furthermore, traditional, formalin fixation were previously thought prevent genetic sequencing compared ethanol preserved larvae. In this study, we used an integrative taxonomic...

10.1016/j.jembe.2022.151763 article EN cc-by Journal of Experimental Marine Biology and Ecology 2022-05-27
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