Dr Vincent Raoult

Dr Vincent Raoult

Post Doc Researcher

School of Environmental and Life Sciences

Career Summary

Biography

I am a marine ecologist with a broad interest in marine processes. As an expert with the use of stable isotopes as an ecological tool, I have used novel approaches to examine ecological interactions from species to ecosystems. I have strong interests in fisheries management, with a particular focus on sharks and rays. I strive to develop novel methodologies to answer or improve on numerous research issues using cutting-edge techniques. I have worked in a variety of marine environments, from estuaries to coral reefs to remote seas in Tasmania.

Qualifications

  • Doctor of Philosophy, Macquarie University

Keywords

  • coral reefs
  • ecology
  • elasmobranchs
  • fisheries
  • isotopes
  • physiology

Languages

  • French (Mother)
  • English (Fluent)

Fields of Research

Code Description Percentage
070403 Fisheries Management 25
060205 Marine and Estuarine Ecology (incl. Marine Ichthyology) 50
060809 Vertebrate Biology 25

Professional Experience

UON Appointment

Title Organisation / Department
Post Doc Researcher University of Newcastle
School of Environmental and Life Sciences
Australia
Casual Academic University of Newcastle
School of Environmental and Life Sciences
Australia
Casual Academic University of Newcastle
School of Environmental and Life Sciences
Australia
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Publications

For publications that are currently unpublished or in-press, details are shown in italics.


Journal article (19 outputs)

Year Citation Altmetrics Link
2019 Young HJ, Raoult V, Platell ME, Williamson JE, Gaston TF, 'Within-genus differences in catchability of elasmobranchs during trawling', Fisheries Research, 211 141-147 (2019)

© 2018 Elsevier B.V. Elasmobranchs make a large contribution to bycatch in commercial trawl fisheries, which reduces the efficiency (and thus profitability of those fisheries), re... [more]

© 2018 Elsevier B.V. Elasmobranchs make a large contribution to bycatch in commercial trawl fisheries, which reduces the efficiency (and thus profitability of those fisheries), results in injury and mortality of those elasmobranchs, and can lead to unsustainable rates of catches. The development of bycatch reduction devices (BRDs) for elasmobranchs has been hindered, among other things, by a lack of knowledge of their avoidance behaviours and thus their vulnerability to capture (catchability). This lack of knowledge potentially affects assessments of the impact of fishing on those bycatch species. Here we examined underwater behaviours, using video analysis, of three species of elasmobranchs (two stingarees, i.e. Urolophus cruciatus and U. paucimaculatus, and one draughtboard shark, Cephalocyllium laticeps) in response to an approaching demersal trawl to quantify behavioural factors that affect their catchability. The morphologically similar U.cruciatus and U. paucimaculatus were similarly abundant, i.e. 290 and 218 individuals, respectively, but displayed different net avoidance behaviours, with U. paucimaculatus being far more likely to enter the trawl. The greater catchability of U. paucimaculatus would falsely suggest this less common species was more abundant than U. cruciatus, which has implications for any assessments of the impacts of trawling on these two elasmobranchs. Collision with trawl gear was relatively common for both Urolophus spp., and this was shown to decrease their likelihood of capture. In contrast, only 1 of the 68 individuals of the morphologically-different C. laticeps collided with gear. These results will help inform future development of BRDs and highlight that understanding the behaviour of elasmobranchs in response to capture methods should form an integral component of assessments of the impacts of trawling on this highly affected group.

DOI 10.1016/j.fishres.2018.11.015
Co-authors Margaret Platell
2019 Raoult V, Williamson JE, Smith TM, Gaston TF, 'Effects of on-deck holding conditions and air exposure on post-release behaviours of sharks revealed by a remote operated vehicle', Journal of Experimental Marine Biology and Ecology, 511 10-18 (2019) [C1]
DOI 10.1016/j.jembe.2018.11.003
Co-authors Troy Gaston, Tim M Smith
2018 Bird CS, Veríssimo A, Magozzi S, Abrantes KG, Aguilar A, Al-Reasi H, et al., 'A global perspective on the trophic geography of sharks', Nature Ecology and Evolution, 2 299-305 (2018) [C1]
DOI 10.1038/s41559-017-0432-z
Citations Scopus - 7Web of Science - 5
2018 Richards RJ, Raoult V, Powter DM, Gaston TF, 'Permanent magnets reduce bycatch of benthic sharks in an ocean trap fishery', Fisheries Research, 208 16-21 (2018) [C1]

© 2018 Elsevier B.V. Sharks and rays are often caught as bycatch by commercial fisheries, and high incidences of bycatch are partially to blame for the declines in many population... [more]

© 2018 Elsevier B.V. Sharks and rays are often caught as bycatch by commercial fisheries, and high incidences of bycatch are partially to blame for the declines in many populations of elasmobranchs. In an effort to reduce rates of bycatch, researchers have tested various deterrents that could benefit fisheries. Permanent magnets are one promising form of bycatch reduction device, yet their efficacy has only been tested for hook-and-line fisheries with variable results. Here, we examined the potential benefits of permanent magnets on an ocean fish trap fishery targeting snapper (Pagrus auratus) where more than 10% of the total catch is comprised of unwanted elasmobranchs and the presence of elasmobranchs reduces the catch of target species. Over 1000 fish traps were deployed in a fishery-dependent survey in New South Wales, Australia. Standardised catch rates indicate that the incorporation of magnets into fish traps significantly reduced incidences of elasmobranch bycatch (mainly Brachaelurus waddi) by over a third, while increasing the amount of target fish caught by an equivalent amount. Together these results suggest that magnets can be used as an effective bycatch reduction device that reduces incidences of elasmobranch bycatch while increasing the profitability of fish traps for fishermen. Future studies should aim to replicate these results in areas where different species of elasmobranchs occur.

DOI 10.1016/j.fishres.2018.07.006
Co-authors Troy Gaston
2018 Raoult V, Gaston TF, 'Rapid biomass and size-frequency estimates of edible jellyfish populations using drones', Fisheries Research, 207 160-164 (2018) [C1]
DOI 10.1016/j.fishres.2018.06.010
Co-authors Troy Gaston
2018 Raoult V, Gaston TF, Taylor MD, 'Habitat¿fishery linkages in two major south-eastern Australian estuaries show that the C4 saltmarsh plant Sporobolus virginicus is a significant contributor to fisheries productivity', Hydrobiologia, 811 221-238 (2018) [C1]
DOI 10.1007/s10750-017-3490-y
Citations Scopus - 2
Co-authors Troy Gaston
2018 Taylor MD, Gaston TF, Raoult V, 'The economic value of fisheries harvest supported by saltmarsh and mangrove productivity in two Australian estuaries', ECOLOGICAL INDICATORS, 84 701-709 (2018) [C1]
DOI 10.1016/j.ecolind.2017.08.044
Co-authors Troy Gaston
2018 Raoult V, Howell N, Zahra D, Peddemors VM, Howard DL, de Jonge MD, et al., 'Localized zinc distribution in shark vertebrae suggests differential deposition during ontogeny and across vertebral structures'', PLOS ONE, 13 (2018) [C1]
DOI 10.1371/journal.pone.0190927
2017 Nevatte RJ, Williamson JE, Vella NGF, Raoult V, Wueringer BE, 'Morphometry and microanatomy of the barbels of the common sawshark Pristiophorus cirratus (Pristiophoridae): implications for pristiophorid behaviour', JOURNAL OF FISH BIOLOGY, 90 1906-1925 (2017)
DOI 10.1111/jfb.13275
Citations Scopus - 2Web of Science - 2
2017 Raoult V, Trompf L, Williamson JE, Brown C, 'Stress profile influences learning approach in a marine fish', PEERJ, 5 (2017)
DOI 10.7717/peerj.3445
Citations Scopus - 1Web of Science - 1
2017 Raoult V, Peddemors V, Williamson JE, 'Biology of angel sharks (Squatina sp.) and sawsharks (Pristiophorus sp.) caught in south-eastern Australian trawl fisheries and the New South Wales shark-meshing (bather-protection) program', Marine and Freshwater Research, 68 207-212 (2017)

© CSIRO 2017. Two species of angel shark (Squatina australis, S. albipunctata) and two species of sawshark (Pristiophorus nudipinnis, P. cirratus) are frequently caught in south-e... [more]

© CSIRO 2017. Two species of angel shark (Squatina australis, S. albipunctata) and two species of sawshark (Pristiophorus nudipinnis, P. cirratus) are frequently caught in south-eastern Australia. Little is known of the biology of these elasmobranchs, despite being caught as secondary target species in large numbers. The present study collected morphometric and reproductive data from sharks caught in shark-control nets, commercial fishing trawlers and research trawlers in south-eastern Australia. All four species had female-biased sexual size dimorphism, but growth curves between sexes did not differ. Male S. australis individuals were fully mature at ,800-mm total length, male P. nudipinnis at ,900 mm, and male P. cirratus at ,800 mm. Anterior pectoral margins could be used to determine total length in all species. No morphometric measurement could reliably separate Squatina spp. or Pristiophorus spp., although S. albipunctata over 1000-mm total length had larger eyes than did S. australis. Journal compilation.

DOI 10.1071/MF15369
Citations Scopus - 4Web of Science - 2
2017 Williamson JE, Byrnes EE, Clark JA, Connolly DM, Schiller SE, Thompson JA, et al., 'Ecological impacts and management implications of reef walking on a tropical reef flat community', MARINE POLLUTION BULLETIN, 114 742-750 (2017)
DOI 10.1016/j.marpolbul.2016.10.069
Citations Scopus - 3Web of Science - 5
2017 Raoult V, Reid-Anderson S, Ferri A, Williamson JE, 'How Reliable Is Structure from Motion (SfM) over Time and between Observers? A Case Study Using Coral Reef Bommies', Remote Sensing, 9 (2017) [C1]
DOI 10.3390/rs9070740
Citations Web of Science - 3
2016 Raoult V, David PA, Dupont SF, Mathewson CP, O'Neill SJ, Powell NN, Williamson JE, 'GoPros TM as an underwater photogrammetry tool for citizen science', PeerJ, 2016 (2016)
DOI 10.7717/peerj.1960
Citations Scopus - 8Web of Science - 5
2016 Raoult V, Peddemors VM, Zahra D, Howell N, Howard DL, De Jonge MD, Williamson JE, 'Strontium mineralization of shark vertebrae', Scientific Reports, 6 (2016) [C1]
DOI 10.1038/srep29698
Citations Scopus - 9Web of Science - 8
2015 Raoult V, Gaston TF, Williamson JE, 'Not all sawsharks are equal: Species of co-existing sawsharks show plasticity in trophic consumption both within and between species', Canadian Journal of Fisheries and Aquatic Sciences, 72 1769-1775 (2015) [C1]

© 2015, National Research Council of Canada. All rights reserved. Despite the global distribution of sawsharks, little is known about their diets or their role in the marine biosp... [more]

© 2015, National Research Council of Canada. All rights reserved. Despite the global distribution of sawsharks, little is known about their diets or their role in the marine biosphere. As species in higher trophic positions are generally considered to be more at risk to perturbations such as fishing, understanding their role in the food chain will enable better conservation and management strategies for these species. Two sawshark species (Pristiophorus cirratus, Pristiophorus nudipinnis) co-occur in waters off east Tasmania, Australia. This study determined the trophic positions of these sawsharks and whether they avoided competing with each other through resource partitioning. Isotopic analysis of muscle tissue revealed that P. cirratus and P. nudipinnis had significantly different trophic levels, with P. cirratus likely to have a diet of primary consumers and P. nudipinnis likely to have a piscivorous diet. Owing to their different isotopic signatures, it is also likely that the sawshark rostrum has multiple functions. Both species shifted to higher trophic levels during ontogeny. Maternal isotopic signatures were detectable in P. cirratus juveniles.

DOI 10.1139/cjfas-2015-0307
Citations Scopus - 6Web of Science - 5
Co-authors Troy Gaston
2012 Raoult V, Brown C, Zuberi A, Williamson JE, 'Blood cortisol concentrations predict boldness in juvenile mulloway (Argyosomus japonicus)', Journal of Ethology, 30 225-232 (2012)

There is a growing interest in animal personality because individual variation is the substrate of the evolutionary process. Despite revelations that personality traits affect key... [more]

There is a growing interest in animal personality because individual variation is the substrate of the evolutionary process. Despite revelations that personality traits affect key fitness variables, little is known about the proximate mechanisms generating consistent behavioural differences between individuals. Boldness, the propensity to take risks, is one of the most widely studied aspects of personality in fishes. We assessed the position of juvenile Argyosomus japonicus on the "boldness-shyness" continuum by repeatedly recording the time taken to exit a refuge and explore a novel environment. Stress-related hormone concentrations after exposure to a mild stressor were analysed 1 month before behavioural assays and found to be significantly linked to boldness scores. Shy fish had significantly higher plasma cortisol concentrations in response to handling stress than bold fish. Spontaneous switching between personality categories occurred between trials, highlighting the importance of repeated testing of personality traits over time to correctly attribute personality. © 2011 Japan Ethological Society and Springer.

DOI 10.1007/s10164-011-0314-9
Citations Scopus - 23Web of Science - 22
2012 Raoult V, Brown C, Williamson JE, 'Superglue is Not Super: An Assessment of Superglue for Suturing Tag Incisions in a Cultured Marine Fish', Journal of the World Aquaculture Society, 43 140-143 (2012)
DOI 10.1111/j.1749-7345.2011.00536.x
Citations Scopus - 4Web of Science - 2
Raoult V, Tosetto L, Williamson J, 'Drone-Based High-Resolution Tracking of Aquatic Vertebrates', Drones, 2 37-37
DOI 10.3390/drones2040037
Show 16 more journal articles
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Grants and Funding

Summary

Number of grants 16
Total funding $314,204

Click on a grant title below to expand the full details for that specific grant.


20191 grants / $28,218

Quantifying habitat-fishery linkages in Lake Illawarra, NSW$28,218

Funding body: Wollongong City Council

Funding body Wollongong City Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Research Grant
Role Investigator
Funding Start 2019
Funding Finish 2019
GNo G1801393
Type Of Funding C2210 - Aust StateTerritoryLocal - Own Purpose
Category 2210
UON Y

201811 grants / $243,073

Linking ecosystem services to the profitability of prawn fisheries$118,068

Funding body: Fisheries Research & Development Corporation (FRDC)

Funding body Fisheries Research & Development Corporation (FRDC)
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Dr Ian Creswell, Dr Anthony O'Grady, Dr Becky Schmidt, Dr Matt Taylor
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2020
GNo G1800830
Type Of Funding Aust Competitive - Commonwealth
Category 1CS
UON Y

Provision of developing GIS layers on water quality and ecological services$27,150

Funding body: Infrastructure NSW (iNSW)

Funding body Infrastructure NSW (iNSW)
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme NSW Government PMS Prequalification Scheme
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800813
Type Of Funding C2210 - Aust StateTerritoryLocal - Own Purpose
Category 2210
UON Y

Do oyster farms benefit estuarine fisheries in Wallis Lake?$20,000

Funding body: MidCoast Council

Funding body MidCoast Council
Project Team Doctor Tim Smith, Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Margaret Platell
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2019
GNo G1800934
Type Of Funding C2210 - Aust StateTerritoryLocal - Own Purpose
Category 2210
UON Y

Trophic ecology and geographic patterns of Great Hammerhead Sharks (Sphyrna mokarran) of eastern Australia$19,200

Funding body: Sea World Research and Rescue Foundation Inc

Funding body Sea World Research and Rescue Foundation Inc
Project Team Doctor Vincent Raoult, Doctor Troy Gaston, Associate Professor Jane Williamson, Assistant Professor Vic Peddermors, Peddemors, Vic, Williamson, Jane
Scheme Marine Vertebrate Grants
Role Lead
Funding Start 2018
Funding Finish 2018
GNo G1700744
Type Of Funding C3112 - Aust Not for profit
Category 3112
UON Y

Fish assemblages and dominant primary producers in Wallaga Lake NSW$17,655

Funding body: Bega Valley Shire Council

Funding body Bega Valley Shire Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800030
Type Of Funding C2220 - Aust StateTerritoryLocal - Other
Category 2220
UON Y

Improving adoptions of sustainable crab trap designs$12,000

Funding body: Local Land Services

Funding body Local Land Services
Project Team Doctor Tim Smith, Doctor Troy Gaston, Doctor Vincent Raoult, Matt Broadhurst
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800580
Type Of Funding C2210 - Aust StateTerritoryLocal - Own Purpose
Category 2210
UON Y

Fish assemblages of the Gosford coastal lagoons$8,000

Funding body: Central Coast Council

Funding body Central Coast Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith, Doctor Margaret Platell
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800563
Type Of Funding C2220 - Aust StateTerritoryLocal - Other
Category 2220
UON Y

Spatial and temporal variability of salinity in coastal lagoons$6,000

Funding body: Central Coast Council

Funding body Central Coast Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Small Research Consultancy
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800564
Type Of Funding C2210 - Aust StateTerritoryLocal - Own Purpose
Category 2210
UON Y

Spatial and temporal variability of salinity in coastal lagoons$6,000

Funding body: Central Coast Council

Funding body Central Coast Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Small Research Consultancy
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800767
Type Of Funding C2220 - Aust StateTerritoryLocal - Other
Category 2220
UON Y

Fish assemblages and dominant primary producers in Wallaga Lake NSW$5,000

Funding body: NSW Department of Primary Industries

Funding body NSW Department of Primary Industries
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800757
Type Of Funding C2220 - Aust StateTerritoryLocal - Other
Category 2220
UON Y

How does motion affect the shape and growth of Sydney Rock Oysters?$4,000

Funding body: Select Oyster Company

Funding body Select Oyster Company
Project Team Doctor Troy Gaston, Doctor Tim Smith, Doctor Vincent Raoult, Emma Wilkie
Scheme Research Grant
Role Investigator
Funding Start 2018
Funding Finish 2018
GNo G1800868
Type Of Funding C3111 - Aust For profit
Category 3111
UON Y

20174 grants / $42,913

Ecological assessment of Stockton Beach sand nourishment works$19,600

Funding body: Newcastle City Council

Funding body Newcastle City Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith, Doctor Margaret Platell
Scheme Small Research Consultancy
Role Investigator
Funding Start 2017
Funding Finish 2018
GNo G1701457
Type Of Funding C2220 - Aust StateTerritoryLocal - Other
Category 2220
UON Y

Distribution of the rare and endemic soft coral Dendronephthya australis in the Brisbane Water estuary$9,620

Funding body: Central Coast Council

Funding body Central Coast Council
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Protection of the Environment Trust Project Grant
Role Investigator
Funding Start 2017
Funding Finish 2018
GNo G1700829
Type Of Funding C2210 - Aust StateTerritoryLocal - Own Purpose
Category 2210
UON Y

Is there enhancement, depletion or trophic subsidy of local rocky reefs by seacage aquaculture? $7,118

Funding body: University of Newcastle

Funding body University of Newcastle
Project Team Doctor Troy Gaston, Doctor Margaret Platell, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Ourimbah Strategic Pilot Grant
Role Investigator
Funding Start 2017
Funding Finish 2017
GNo G1701266
Type Of Funding Internal
Category INTE
UON Y

Nutrient source tracking of groundwater using stable isotopes at Tanilba Bay$6,575

Funding body: Hunter Water Corporation

Funding body Hunter Water Corporation
Project Team Doctor Troy Gaston, Doctor Vincent Raoult, Doctor Tim Smith
Scheme Small Research Consultancy
Role Investigator
Funding Start 2017
Funding Finish 2017
GNo G1701422
Type Of Funding C2220 - Aust StateTerritoryLocal - Other
Category 2220
UON Y
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News

Drones provide a new perspective into shark behaviour

November 22, 2018

The safety of surfers, divers and beach goers could be increased following a new tracking technique that uses drones to observe shark behaviour in water up to five metres deep.

Magnets prove repellent to sharks and rays

July 26, 2018

A new study has revealed simple magnets may be the solution to reducing the number of sharks and rays caught as bycatch from commercial fishing activities.

Global analysis reveals how sharks travel the oceans to find food

January 29, 2018

A UON researcher is part of a major international collaboration that has revealed greater insight into the feeding habits of the world’s shark population.

Dr Vincent Raoult

Positions

Post Doc Researcher
School of Environmental and Life Sciences
Faculty of Science

Casual Academic
School of Environmental and Life Sciences
Faculty of Science

Casual Academic
School of Environmental and Life Sciences
Faculty of Science

Contact Details

Email vincent.raoult@newcastle.edu.au

Office

Building Chemistry Building
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