17 results
Environment
PROJECT NUMBER • 1999-205
PROJECT STATUS:
COMPLETED

The effect of barramundi Nodavirus on important freshwater fishes

This project has confirmed the knowledge that management of barramundi translocations outside their natural range requires fisheries authorities take into account the risk that barramundi nodavirus may lethally infect native freshwater fishes. The project has shown barramundi nodavirus can...
ORGANISATION:
Department of Primary Industries (QLD)
Industry
PROJECT NUMBER • 2017-019
PROJECT STATUS:
COMPLETED

Freshwater fish attracting structures (FAS): Evaluating a new tool to improve fishing quality and access to fisheries resources in Australian impoundments

This document has been compiled from various sources and, to the authors’ knowledge, represents the best advice currently available regarding the use of fish attracting structures to improve recreational angling in Australian impoundments. Although the principles outlined in this document may...
ORGANISATION:
Department of Primary Industries (QLD)
Industry
PROJECT NUMBER • 2009-775
PROJECT STATUS:
COMPLETED

Seafood CRC: prevention of muddy taints in farmed barramundi

End chain customers have learnt to expect muddiness in Barramundi and this causes a negative barrier to purchase. The impact of market perception is farmed Barramundi has remained at 7-$10/kg (farm-gate price) for >10 years, despite the species having an 'iconic' name with consumers. There is a...
ORGANISATION:
Department of Primary Industries (QLD)
SPECIES

Effects of Trawling subprogram: reducing the impact of Queensland's trawl fisheries on protected sea snakes

Project number: 2005-053
Project Status:
Completed
Budget expenditure: $394,798.54
Principal Investigator: Tony J. Courtney
Organisation: Department of Primary Industries (QLD)
Project start/end date: 30 Jul 2005 - 30 Nov 2008
Contact:
FRDC

Need

1) Legal obligation.

In Australia, sea snakes are a protected species group under Schedule 1 of the National Parks and Wildlife Regulations 1994, but despite their protected status, tens of thousands of snakes are caught incidentally in the Queensland trawl fishery each year. In the Northern Prawn Fishery (NPF) it has been estimated that between 81,000 and 120,000 were caught annually in the early 1990s (see Wassenberg et al. 1994 and Ward 1996). Wassenberg et al. (2001) reported that 48.5% of sea snakes caught from research and commercial prawn trawling die as a result of being trawled. The Queensland Government and the Queensland commercial trawl fishers are legally obliged to address the problem and minimise sea snake – trawl interactions.

2) Recommendations by the Department of Environment and Heritage (DEH)

The impact of prawn trawling on the sustainability of sea snake populations on the Queensland east coast is a major concern to DEH. In their review of the strategic assessment of the Queensland east coast trawl fishery, DEH recommended to the Queensland Government that research into the impact of trawling on sea snakes be promoted, and that all reasonable steps should be undertaken to reduce interactions between protected species and the Queensland trawl fishery.

In summary there is a strong legal case in support of research that reduces the impacts of trawling on sea snake populations. In addition, addressing the DEH recommendations will help to ensure that that the Queensland east coast trawl fishery remains on the list of fisheries that are accredited for export, thus securing the continuation of the export of seafood produced from the fishery.

References

Ward TM (1996) Sea snake by-catch of prawn trawlers on the northern Australian continental shelf. Marine and Freshwater Research 47, 631-635.

Wassenberg TJ, Milton DA, Burridge CY (2001) Survival rates of sea snakes caught by demersal trawlers in northern and eastern Australia. Biological Conservation 100, 271-280.

Wassenberg TJ, Salini JP, Heatwole H, Kerr JD (1994) Incidental capture of sea-snakes (Hydrophiidae) by prawn trawlers in the Gulf of Carpentaria, Australia. Australian Journal of Marine and Freshwater Research 45, 429-443.

Objectives

1. Collate and review existing data and literature on sea snake distribution and abundance on the Queensland east coast. This will enhance the detail and precision of the recently introduced CFISH logbook data program on Species of Conservation Interest.
2. Implement a crew-based data collection program to quantify information on sea snake catch rates, species composition and distribution. Where possible, consider areas that are closed and open to trawling (contingent upon GBRMPA approval to sample closed areas).
3. Quantify post-trawling mortality rates of sea snakes by undertaking survival experiments at sea on commercial vessels.
4. Test effectiveness of BRDs, including square mesh panels, on sea snake catch rates and promote the uptake of effective devices by industry.

Final report

ISBN: 978-0-7345-0418-0
Author: Tony Courtney
Industry
PROJECT NUMBER • 1998-221
PROJECT STATUS:
COMPLETED

Impoundment stocking strategies for eastern and northern Australia

Fish stocking is a valuable and widely used fisheries management tool. If managed well, a fish stocking program can improve the status of declining or threatened fish stocks, restore species diversity to a degraded waterway, and even create a fishery where there was none before. The positive image...
ORGANISATION:
Department of Primary Industries (QLD)
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