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Communities
Communities

Stable isotopes: a rapid method to determine lobster diet and trace lobster origin?

Project number: 2021-020
Project Status:
Completed
Budget expenditure: $31,890.00
Principal Investigator: John P. Keane
Organisation: University of Tasmania
Project start/end date: 30 Jun 2021 - 29 Jun 2022
Contact:
FRDC

Need

1. Tracing lobster origin
The need for determining whether stable isotopes are a useful tool for diet analysis and identification of catch location is a priority for the SRL fishery. If proved useful, this technology will allow for rapid identification and isolation of stock abnormalities – such as toxic algal blooms, which has potential to save a lot of time and money for fisheries management.

2. Invasive urchin controls
If results show that small lobsters do predate on urchins, this will be important for informing stock rebuilding targets and reference points relative to urchin control. Primarily we could advise on whether urchin control targets and performance indicators should be based on total lobster biomass or only large lobster biomass. For example, if small lobsters (140mm CL) are found to actively predate on small urchins, the pressure to rebuild the large lobster biomass (>140mm CL) may be reduced. This could in turn help to adapt the rebuild strategy, in line with effective urchin control.

Objectives

1. To determine the level of stable isotope variation within individual lobster tissues (e.g. muscle vs shell) and identify a non-lethal and minimally destructive method of sampling for stable isotopes.
2. To describe lobster diet off eastern Tasmania and quantify the role of smaller lobsters (&lt
140mm CL) in the predation and control of Longspined Sea Urchin in Tasmania.
3. To ascertain if stable isotopes can be used to identify catch location of individual lobsters post-harvest across SE Australia

Final report

ISBN: 978-1-922708-49-6
Authors: Jennifer E. Smith John Keane Michael Oellermann Craig Mundy & Caleb Gardner
Final Report • 2023-05-01 • 1.66 MB
2021-020-DLD.pdf

Summary

Scientists at IMAS conducted a stable isotope study on Southern Rock Lobster (Jasus edwardsii) collected from Southern Australian sites to determine whether or not capture site could be determined post-harvest.
Industry
Industry
PROJECT NUMBER • 2017-012
PROJECT STATUS:
COMPLETED

Investigating social acceptance for the wild catch commercial fishing industry of Southeast Queensland

This research project aimed to develop an engagement strategy that would assist the Southeast Queensland (SEQ) wild catch commercial fishing industry to gain social acceptance, or a Social Licence to Operate (SLO). SLO is needed to maintain access to the resource and market confidence. A scan of...
ORGANISATION:
University of the Sunshine Coast (USC)
Industry
PROJECT NUMBER • 2017-013
PROJECT STATUS:
COMPLETED

Rebuilding Southern Rock Lobster stocks on the east coast of Tasmania: informing options for management

Understanding relationships between fisher behaviour, their expectations/aspirations, responses to changes in stock status and to management intervention is critical when implementing effective management strategies. This project aims to inform on the practical challenges to achieving the stock...
ORGANISATION:
University of Tasmania (UTAS)
Communities
PROJECT NUMBER • 2017-131
PROJECT STATUS:
COMPLETED

Media messages about sustainable seafood: how do media influencers affect consumer attitudes?

We have conducted a comprehensive media survey of key media texts across all major genres and platforms for the past 3 years (2015-2018) to identify: the major reported issues affecting seafood sustainability; the role of celebrity chefs and media influencers in this media coverage; and the effects...
ORGANISATION:
University of Adelaide
Industry
PROJECT NUMBER • 2019-107
PROJECT STATUS:
COMPLETED

Attendance at the Food and Agricultural Organisation of the United Nations, Tenure and User Rights Conference in Yeosu, Korea 10 to 14 September 2018

The present project, which was undertaken by Primary Industries and Regions South Australia, was developed to provide the opportunity to showcase the management arrangements in the Spencer Gulf Prawn Fishery (SGPF) and expand the knowledge base in relation to contemporary management arrangements in...
ORGANISATION:
Department of Primary Industries and Regions South Australia (PIRSA)
People
PROJECT NUMBER • 2018-063
PROJECT STATUS:
COMPLETED

Maximising industry representational capacity and capability through improved skills and knowledge

Twenty (20) Tasmanian seafood leaders participated in a two (2) day Australian Institute of Company Directors (AICD) course over the 30 and 31 May 2019. Courses completed were: • Governance for Directors • Finance for Directors Participants gained a better understanding of best practice...
ORGANISATION:
Seafood Industry Tasmania
Industry
PROJECT NUMBER • 2019-142
PROJECT STATUS:
COMPLETED

Resource Sharing in Australian Fisheries Workshop - Progress to Date, Lessons Learnt and Next Steps towards a harmonised approach

Resource sharing is a high priority for the Australian Fisheries Managers Forum (AFMF) with all Australian jurisdictions in the process of developing or having developed policies associated with this issue. Some have gone further and implemented resource sharing with limited success....
ORGANISATION:
FutureCatch Consulting
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