2 results

National Carp Control Plan - Biosecurity Strategy for the Koi (Cyprinus carpio) industry

Project number: 2018-190
Project Status:
Completed
Budget expenditure: $45,750.00
Principal Investigator: Matthew A. Landos
Organisation: Future Fisheries Veterinary Service Pty Ltd (FFVS)
Project start/end date: 26 Mar 2019 - 27 Jun 2019
Contact:
FRDC
SPECIES
European Carp

Need

Cyprinid herpesvirus 3 (Koi herpesvirus, KHV, CyHV-3) is a major disease in koi and carp. In recent years, CyHV-3 has been explored as a possible biocontrol measure for European carp in Australia. This virus was first detected in the United States of America in 1998 and has been detected in various countries including: Canada, Indonesia, Japan, Taiwan, Thailand, Poland (Hendrick 2000; Pokorova 2005; Garver 2010; Tu 2004; Sano 2004; Bergmenn 2006).

The potential release of CyHV-3 into Australian waters will introduce new risks to Australia’s koi industry. Mass mortalities of up to 100% have been described for fish infected with CyHV-3 (Hedrick 2000). Due to the potential severity of the disease, it is important to appreciate the risk factors and all potential biosecurity control measures available for the Australian koi industry and review their likely efficacy, prior to considering release.

The diversity of the koi industry in Australia spans beyond dedicated farms, to hobbyists and koi shows. The type, cost and applicability of all biosecurity measures to all sectors of the koi industry requires careful assessment in the formulation of a biosecurity strategy.

Objectives

1. Assemble best practice biosecurity strategies for the Australian koi industry for protection from CyHV-3
2. Consult with koi industry and Government on suitability and feasibility of biosecurity options
3. Develop biosecurity strategy for Australian koi industry in light of potential planned release of CyHV-3 including estimate of costs for Government and Industry

Final report

Author: Chun-han Lin and Matthew A. Landos
Final Report • 2019-10-17 • 2.70 MB
2018-190-DLD.pdf

Summary

In recent years, CyHV-3 has been explored as a possible biocontrol measure for European carp in
Australia. This virus is an OIE listed disease that at this time remains exotic to Australia. The potential
release of CyHV-3 into Australian waters would introduce new risks to Australia’s koi industry. The
development of feasible biosecurity measures is important in preventing CyHV-3 entry into naïve
populations of koi which is known to cause mass mortalities of up to 100%. This report focuses on
biosecurity measures that can be applied on four different levels: incoming risks for pathogen entry onto
a koi facility, risks for pathogen spread within a koi facility, outgoing risks for pathogen entry onto a koi
facility, and risk of pathogen entry at a koi show/auction.

Eradicating European carp from Tasmania and implications for national European carp eradication

Project number: 2000-182
Project Status:
Completed
Budget expenditure: $174,312.00
Principal Investigator: John Diggle
Organisation: Inland Fisheries Service (IFS)
Project start/end date: 23 Nov 2000 - 30 Aug 2004
Contact:
FRDC
TAGS
Recreational Fishing
Invasive Species
Diagnostic
SPECIES
European Carp

Need

Development of control techniques for carp has been given high priority in FRDC and CCCG reviews of Australia’s carp problem. Carp control is now hampered by a lack of techniques. Eradication is considered to be feasible only in small water bodies that can be poisoned or drained. Genetic and physiologically-based tools may be developed over time to control, and perhaps eradicate, carp from larger water bodies. However, this technology will be expensive to develop and public safety concerns may have to be addressed. What is lacking from carp control are techniques that can be used in larger water bodies. We propose here to modify a standard control technique (physical removal through fishing) so that it can be used to eradicate carp from larger water bodies.

Eradicating carp from Tasmania will provide the basis to rehabilitate what were once two of Tasmania’s finest trout fishing lakes contributing a $30 million fishery comprised of a mix of recreational fishers, commercial fishing guides, tourism operators, and equipment manufacturers. At the same time we will remove the risk of carp escaping from these lakes and causing extensive environmental and habitat damage to lowland rivers, lakes and reservoirs with the resulting loss of freshwater habitat and water quality.

Objectives

1. Use existing Lake Crescent carp capture data to develop a risk assessment model (based on characteristics of recorded catches) that will determine the number of male fish to leave in Lake Crescent while fishing down the females, and the period of fishing required to ensure that the Lake is free of female carp at a level of risk required by managers.
2. Conduct the first three years of a strategic fishing plan to eradicate carp from Lake Crescent.
3. Interpret catch per unit effort and mark and recapture data collected since the start of the fishdown (1995) to develop a population model and determine the population characteristics of the Lake Crescent and Lake Sorell carp populations.
4. Use the models developed in steps 1 and 3 to determine the number of male carp to add to Lake Sorell as female aggregators, and the strategic fishing plan necessary to achieve eradication of females from this lake at the level of risk required by managers.
5. Monitor the results of the selective fishdown of male carp. Determine the extent to which they validate the model predictions and any problems or concerns in using selective removal of males to eradicate the population.
6. Ensure that the successful results get distributed widely to promote the mindset that feral fish can be eradicated and to provide the techniques for that eradication.

Final report

ISBN: 0-646-435-99-X
Author: John Diggle
Final Report • 2004-08-12 • 5.49 MB
2000-182-DLD.pdf
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