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Industry
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PROJECT NUMBER • 2019-013
PROJECT STATUS:
COMPLETED

Modelling environmental changes and effects on wild-caught species in Queensland

This project studied environmental factors which may be influencing the recruitment, catchability or productivity of Snapper, Pearl Perch, and Spanner Crab stocks in Queensland. Two environmental variables: GSLA and Chl-a were found to have strong associations with either abundance or catchability...
ORGANISATION:
University of Queensland (UQ)
Environment
Industry
PROJECT NUMBER • 1994-035
PROJECT STATUS:
COMPLETED

Bioeconomic analysis of the Qld beam trawl fishery

The study estimates the benefits and costs of the beam trawl fishery to the Queensland economy in each of four study areas. Benefits are values of catches and costs include catching costs and costs imposed on the recreational and otter trawl fisheries, through by-catch, congestion and habitat...
ORGANISATION:
University of Queensland (UQ)

Using commercial and recreational fisher knowledge to reconstruct historical catch rates for Queensland Snapper (Chrysophrys auratus), Spanish Mackerel (Scomberomorus commerson) and Coral Trout (Plectropomus spp.): long-term data for incorporation into future stock assessments

Project number: 2013-018
Project Status:
Completed
Budget expenditure: $44,800.00
Principal Investigator: Ruth H. Thurstan
Organisation: University of Queensland (UQ)
Project start/end date: 30 Jun 2013 - 22 Dec 2013
Contact:
FRDC

Need

It is acknowledged that there is a lack of information on past fisheries (i.e. catch rates, fishing effort, proportion of recorded landings) throughout Queensland prior to the start of individual logbook records in 1988 (Halliday and Robins 2007). Yet information prior to this period is critical for successful management, as longer-term perspectives provide data that can help reduce uncertainty associated with projected historical catch levels (Campbell et al. 2009). Long-term data also informs past fishery states, thus equipping managers, stock assessment modellers and the fishing industry with knowledge of historical fishery trends. This can then be used to facilitate informed discussion of appropriate management methods into the future.

During a review of the 2008 Queensland snapper stock assessment, Francis (2009) called for consultation of ‘knowledgeable people’ in order to reconstruct past catch histories, thereby improving estimates for future stock assessments. We aim to fill this gap in research for two fish species that are of particular economic, social and cultural importance to Queensland, pink snapper (Pagrus auratus) and Spanish mackerel (Scomberomorus commerson), through the collation and synthesis of commercial and recreational fisher knowledge.

Our project has broad application to the FRDC’s Research Plan, as it provides a long-term view of the use and management of aquatic resources. It applies to the National Fishing and Aquaculture RD&E Strategy, as it will gather knowledge that can inform environmentally sustainable fishing through determining past changes to catch rates, locations fished and relative fishing effort. In addition, perceptions of changes to fisheries and the broader ecosystem as a result of non-fishery drivers, i.e. coastal development, resource management measures and social drivers of change, will be gathered. Our proposed research will focus upon commercial and recreational fishers, thus incorporating the two major sectors involved in wild-catch fisheries.

Objectives

1. • To reconstruct relative changes in abundance and distribution of pink snapper (Pagrus auratus) and Spanish mackerel (Scomberomorus commerson), using commercial and recreational fishers’ testimony and historical data.
2. • ‘To use fishers’ data to expand our temporal scope of knowledge by providing robust historical data, thereby reducing uncertainty in past exploitation rates and making information available for potential use in future management decisions.’
3. • To determine the impact of evolving fishing technologies, fishing effort and changing management regimes upon fish catches and abundance over time.
4. • To compare perceptions of change between commercial and recreational groups, and identify common areas/species of concern held by both groups.
People

QX disease (Martellia sydneyi) of the sydney rock oyster (Saccostrea commercialis) on the central coast of NSW

Project number: 1994-156
Project Status:
Completed
Budget expenditure: $80,696.00
Principal Investigator: Rob D. Adlard
Organisation: University of Queensland (UQ)
Project start/end date: 28 Jun 1995 - 30 Mar 1997
Contact:
FRDC

Objectives

1. To establish the distribution of the QX organism (Marteilia sydneyi) in estuaries on the central coast of NSW

Identification of deep water trawl fish stocks using parasites as markers

Project number: 1984-027
Project Status:
Completed
Budget expenditure: $0.00
Principal Investigator: Bob J. Lester
Organisation: University of Queensland (UQ)
Project start/end date: 28 Dec 1987 - 31 Dec 1987
Contact:
FRDC

Objectives

1. Determine whether orange roughy, blue grenadier and gemfish constitute single stocks within the south-eastern Australian trawl fishery,
2. or whether each species consists of two or more essentially discrete stocks

Final report

Author: R.J.G. Lester
Final Report • 1987-12-31 • 3.59 MB
1984-027-DLD.pdf

Summary

Orange roughy are a relatively sedentary species with little movement between fish management zones. This is the conclusion of our analysis of the numbers of parasites in the gut wall of 1251 orange roughy Hoplostethus atlanticus from eight areas off southern Australia and three areas off New Zealand.

Two manuscripts were submitted for publication: Stock discrimination of orange roughy Hoplostethus atlanticus by parasite analysis by R.J.G. Lester, K.B. Sewell, A. Barnes and K. Evans, and The numbers of selected parasites in Australian and New Zealand samples of orange roughy Hoplostethus atlanticus, 1983 to 1986, by K.B. Sewell and R.J.G. Lester

Project products

Report • 1.57 MB
1984-027-Supplementary report.pdf

Summary

The numbers of selected parasite species from 23 samples of gemfish, Rexea solandri, from seven locations off southern Australia are given. The data were examined for evidence of isolated gemfish populations. Canonical multivariate analyses of the numbers of larval nematodes (Anisakis spp. and Terranova sp.), larval cestodes (Hepatoxylon trichiurid and Nybelinia sp.), acanthocephalans (Rhadinorhynchus sp. and Corynosoma sp.), and a hemiuroid digenean from a total of763 gemfish showed that the parasite faunas of fish from eastern Australia were similar except for a sample taken off New South Wales at the end of the spawning season whose affinities are unknown.

Fish from South Australia had similar parasite faunas to those collected from eastern Australia suggesting the eastern and western Bass Strait fish belong to the same stock. Samples collected from the Great Australian Bight were distinct from the southern and eastern fish. Differences in parasite fauna were detected between samples taken within the spawning season and those taken from the same locations outside the spawning season, presumably a result of the spawning migration.

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