6 results

Developing targeted strategies for improving product quality through selected low value seafood supply chains

Project number: 2006-209
Project Status:
Completed
Budget expenditure: $325,270.00
Principal Investigator: Thomas Riley
Organisation: Western Australian Fishing Industry Council Inc (WAFIC)
Project start/end date: 29 Sep 2006 - 1 Jan 2011
Contact:
FRDC

Need

Surveys have identified a market absence and yet consumer demand for well-presented, well-priced, top quality fresh and frozen WA seafood products. The market value of WA seafood may be further enhanced by the development of high quality value-added convenience products. These products may be developed using innovative processing technologies that ensure that taste and texture quality equivalent to a fresh product are achieved. Documented attention to food safety and environmental issues should also be addressed as these have been identified in consumer surveys as of importance to the discerning purchaser. Such value-adding, resulting in an extended shelf-life, may also result in export opportunities not currently available to WA suppliers.

To modify current industry practices, and develop new processing protocols to meet these emerging markets, there is a need for species specific, whole of supply chain microbiological and biochemical research, aligned with product quality assessment. Low value seafood with generally short shelf-lives will be chosen as the target sectors to maximize the potential increase in profit by extending shelf-life or by developing new product lines.

There have been no investigations to identify specific spoilage organisms that are found on seafood along the WA coast. Virtually nothing is known about any of the microflora of WA marine species. In terms of finfish in other parts of Australia, cool water fish are generally spoiled by Shewanella putrefaciens and similar pseudomonads, but the situation in warm water species is less clear with Pseudomonas fragi having been reported. The occurrence of these on WA species is unknown, but without this knowledge it will not be possible to design appropriate preservation, storage and packaging strategies to deal with spoilage organisms.

Objectives

1. To complete microbiological, biochemical and temperature analyses of six seafood supply chains.
2. To determine the impact of specific spoilage organisms/products on product quality through the test supply chains.
3. To identify and validate supply chain intervention and/or value-adding protocols which improve shelf-life or enable the development of new products.
Industry
PROJECT NUMBER • 2003-237
PROJECT STATUS:
COMPLETED

Seafood CRC: Development of a quality index for Australian seafood

This project updated the Australian Seafood Quality Index manual with eight new species For copies of the manual please contact markb@sydneyfishmarket.com.au For the Quality Index on a free app platform, visit the iTunes or Android stores and search for 'Australian Seafood Quality...
ORGANISATION:
Sydney Fish Market Pty Ltd

Analysis of the microchemistry and stable isotopic composition of the otoliths of goldband snapper (Pristipomoides multidens) as an aid to the determination of stock structure

Project number: 1998-154
Project Status:
Completed
Budget expenditure: $31,608.00
Principal Investigator: Stephen J. Newman
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 21 Jun 1998 - 30 Dec 2000
Contact:
FRDC

Need

The Northern Territory Fisheries Division and the Fisheries Department of Western Australia are currently formulating management plans for the demersal fisheries off their respective coastlines and are concerned about current levels of exploitation and the potential for over-exploitation. A key issue in the formulation of these plans is whether there is a single shared stock between WA and NT or distinct isolated stocks. Under a single stock assumption, overfishing in any one sector of the fishery could lead to depleted catches in other sectors. There is presently little information on the stock structure of Pristipomoides multidens across northern Australia, nor is there any information on migration patterns within the region (genetic differences are currently being investigated in FRDC Project 96/131). This important issue needs to be resolved before appropriate management plans can be determined.

Furthermore, the resolution of stock structure between WA and NT will allow informed decisions on the likelihood of shared demersal fishery resources with Indonesia across international maritime boundaries (NT Fisheries have collected some samples from Indonesian waters).

See also original Need in FRDC Project 96/131.

Objectives

1. To investigate the stock structure of Goldband Snapper (Pristipomoides multidens) across northern Australia using otolith microchemistry and stable isotopic composition in order to assist in the sustainable development of appropriate management plans for the deepwater snapper fisheries of the Northern Territory and Western Australia.

Final report

ISBN: 0-7309-8444-3
Author: Stephen Newman
Final Report • 2000-08-08 • 491.49 KB
1998-154-DLD.pdf

Summary

Measurement of stable isotope ratios of oxygen (18O:16O) and carbon (13C:12C) in the earstone (sagittal otolith) carbonate from assemblages of goldband snapper, Pristipomoides multidens, from waters off northern and western Australia revealed location-specific signatures and indicated that fish from all sites sampled within Australia (Exmouth, Rankin Bank, Broome, Vulcan Shoals, Timor Sea, Arafura Sea), Indonesia (Kupang) and Papua New Guinea (Pommern Bay) were different.

The significant differences in the isotopic signatures of goldband snapper demonstrated that there is unlikely to be substantial movement of fish among these distinct adult assemblages. The stable isotopic signatures for the fish from the different locations was persistent through time, and therefore it could be concluded that they comprise separate stocks for many of the purposes of fisheries management.

The ratios of the stable oxygen isotopes in goldband snapper were significantly related to sea surface temperatures (r2 = 0.797) and latitude (r2 = 0.783). This study has provided further evidence that measurement of the stable isotope ratios in teleost earstone (sagittal otolith) carbonate can be a valuable tool in the delineation of fishable stocks, or fishery management units, of vulnerable age classes where the range of distribution of the species in question covers waters with different temperature regimes.

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