PROJECT NUMBER
•
2006-026
PROJECT STATUS:
COMPLETED
ORGANISATION:
McPhee Research Consultants Pty Ltd
TAGS
SPECIES
23 results
PROJECT NUMBER
•
1999-120
PROJECT STATUS:
COMPLETED
ORGANISATION:
Department of Primary Industries (QLD)
TAGS
SPECIES
PROJECT NUMBER
•
2017-048
PROJECT STATUS:
COMPLETED
Improving mortality rate estimates for management of the Queensland Saucer Scallop fishery
This research was undertaken on the Queensland saucer scallop (Ylistrum balloti) fishery in southeast
Queensland, which is an important component of the Queensland East Coast Otter Trawl Fishery
(QECOTF). The research was undertaken by a collaborative team from the Queensland Department...
ORGANISATION:
Department of Primary Industries (QLD)
TAGS
SPECIES
PROJECT NUMBER
•
2005-038
PROJECT STATUS:
COMPLETED
ORGANISATION:
Edith Cowan University (ECU)
TAGS
SPECIES
PROJECT NUMBER
•
2015-026
PROJECT STATUS:
COMPLETED
Understanding recruitment variation (including the collapse) of Saucer Scallop stocks in Western Australia and assessing the feasibility of assisted recovery measures for improved management in a changing environment
This study examined possible contributing environmental factors to the recruitment variability of the Ballot’s saucer scallop Ylistrum balloti across the main stocks in Western Australia. The project was undertaken to explain the variation observed between years and between regions as well...
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
TAGS
SPECIES
PROJECT NUMBER
•
2017-100
PROJECT STATUS:
COMPLETED
ORGANISATION:
Fisheries Research and Development Corporation (FRDC)
TAGS
SPECIES
Harvest strategy evaluation to optimise the sustainability and value of the Queensland scallop fishery
Project number:
2006-024
Project Status:
Completed
Budget expenditure:
$412,078.00
Principal Investigator:
Matthew J. Campbell
Organisation:
Department of Primary Industries (QLD)
SPECIES
1. Need to evaluate current management measures
There is a need to evaluate the current management measures applied to the scallop fishery, particularly the range of minimum legal sizes, the effects of the southern closure and the rotational closures. Precisely what are these measures achieving and are they effective? Can the value of the resource be increased with alternative management measures, within the constraints of acceptable risks of overfishing? One of QFIRAC's priorities is to look at the scallop fishery and in particular the value of protected areas, sources of mortality and stock structure.
2. Need to determine discard mortality and growth by region
Some processors are requesting DPI&F abandon the rotational spawning stock closures and lower the minimum legal size of scallops with the intention of increasing the amount of scallops fishers can retain and market. To consider any of these changes in management that could possibly lead to overfishing it is imperative that we have precise estimates of key stock assessment parameters including gear selectivity, and discard mortality.
3. Need to measure fine-scale trawl intensity
The frequency with which discarded scallops are recaptured over time and space may impact on estimates of discard mortality. Using the VMS trawl track database the frequency with which an area is trawled will be determined to guide subsequent discard mortality experiments.
1. Measure spatial and temporal trawl frequency of scallop grounds using VMS data. This will provide a relative measure of how often individual undersized scallops are caught and put through a tumbler
2. Estimate discard mortality and growth rates for saucer scallops using cage experiments.
3. Evaluate the current management measures, in particular the seasonal closure, rotational closure and seasonally varying minimum legal sizes using stock assessment and management modeling models. Recommend optimal range of management measures to ensure long-term viability and value of the Scallop fishery based on a formal management strategy evaluation.
Final report
ISBN:
978-0-7345-0416-6
Author:
Matthew Campbell
Stock predictions and spatial population indicators for Australia's east coast saucer scallop fishery
Project number:
2017-057
Project Status:
Completed
Budget expenditure:
$159,000.00
Principal Investigator:
Michael F. O'Neill
Organisation:
Department of Primary Industries (QLD)
SPECIES
There is a strong need to better understand the respective roles of fishing effort and environmental drivers on the saucer scallop’s population dynamics and abundance, specifically in relation to the current poor stock status. This will be addressed in the project analyses and improvements to the scallop stock assessment model.
There is also a need for fishery leaders to implement management procedures in the scallop fishery that are appropriate to the causes of the current poor stock status. Outputs from the project will assist with formulating procedures effective for promoting stock recovery, while considering economic and social factors of fishing.
As most of the scallop fishery is located in waters of the GBRMP, which is a World Heritage Area, there is an obligation to ensure that biodiversity and ecosystem services within the Park are maintained. The project will address these needs.
Finally, there is a need to maintain the Wildlife Trade Operation approval which is required to export saucer scallops internationally. The project will help address the terms and conditions pertaining to sustainability of fishing the stock required by the Commonwealth Department of Environment and Energy to secure this approval.
1. Design stock model structures and estimate parameter values for the associations between saucer scallop abundance and environmental variables, including scenarios of scallop recruitment changing in parallel with changes in areas of the different habitat types.
2. Improve spatial indicators and stock model predictions to estimate the current populations size of saucer scallops and develop management procedures.
Final report
ISBN:
978-0-7345-0464-7
Author:
Dr Michael O’Neill
Final Report
•
2020-07-01
•
8.66 MB
2017-057-DLD.pdf
This project undertook analyses to understand the role of overfishing and the environment on saucer scallops.
The analyses indicated reduced numbers of spawning scallops. Historical levels of fishing and environmental influences such as from increased sea surface temperatures (SST) have amplified scallop mortality rates.
The results herein, inform on crucial information needed to rebuild the fishery between Yeppoon and K’gari (Fraser Island). To do so, fishery management needs to reduce the spatial intensity of fishing effort applied and ensure that enough spawning occurs each year to support the scallop population and fishery.
PROJECT NUMBER
•
1999-332
PROJECT STATUS:
COMPLETED
Development of a national biotoxin strategy
In Australia aquaculture and wild harvest of shellfish is an economically important and growing industry. The safety of these products as a food source is of utmost importance from both public health and economic points of view. One of the potential problems faced by shellfish growers is...
ORGANISATION:
Department of Primary Industries and Regions South Australia (PIRSA)
TAGS
SPECIES
PROJECT NUMBER
•
2021-053
PROJECT STATUS:
CURRENT
ORGANISATION:
University of Tasmania (UTAS)
TAGS
SPECIES
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