52,775 results
PROJECT NUMBER
•
2011-058.20
PROJECT STATUS:
COMPLETED
ORGANISATION:
Jeffrey D Moore
PROJECT NUMBER
•
2008-085
PROJECT STATUS:
COMPLETED
ORGANISATION:
Department of Primary Industries and Regional Development (DPIRD) WA
PROJECT NUMBER
•
2012-717
PROJECT STATUS:
COMPLETED
SCRC: Seafood CRC Research Travel Grant: Attendance at the Economics of Aquaculture course, with a focus on salmonid aquaculture, University of Portsmouth, United Kingdom
Andrew King, a Seafood CRC PhD student was awarded a research travel grant to attend an intensive course on the economics of aquaculture held at the University of Portsmouth in the United Kingdom in April 2012.
The course was given by two of the world's leading experts, and was of direct relevance...
ORGANISATION:
University of Tasmania (UTAS)
PROJECT NUMBER
•
2011-087
PROJECT STATUS:
COMPLETED
Tactical Research Fund: trial of an industry implemented, spatially discrete eradication/control program for Centrostephanus rodgersii in Tasmania
The long-spined sea urchin, Centrostephanus rodgersii has expanded its distribution southwards from southern New South Wales, through Eastern Victoria, the Bass Strait Islands and down the east coast of Tasmania. In some areas of Tasmania abundance of C. rodgersii has increased substantially, even...
ORGANISATION:
University of Tasmania (UTAS)
SPECIES
PROJECT NUMBER
•
2009-750
PROJECT STATUS:
COMPLETED
SCRC: SCRC RTG 3.1: Queensland Institute of Medical Research (QIMR) Flow of Cytometry Methods Course and Workshop (Dr Melony Sellars: Student Andrew Foote)
Develop knowledge and skills in flow cytometry to help advance the progress of my CRC project; advance my professional development; share my skills and knowledge with relevant CRC participants and projects.
Flow cytometry is a very useful tool which can be used for almost any molecular application...
ORGANISATION:
CSIRO Oceans and Atmosphere Hobart
Tactical Research Fund: Development and deployment of sterile ‘Judas fish’ to assist carp eradication in Lake Sorell, Tasmania - surgical and chemical sterilisation
Project number:
2012-039
Project Status:
Completed
Budget expenditure:
$75,000.00
Principal Investigator:
Jawahar G. Patil
Organisation:
Inland Fisheries Service (IFS)
Project start/end date:
12 Sep 2012
-
29 May 2014
Contact:
FRDC
Critically, sterile Judas fish need to be developed/deployed by spring of 2013, before remaining females from the 2009 cohort begin to mature. Delay in project commencement beyond 2012 spring will critically hamper carp eradication in Tasmania.
To date, Integrated Carp Management (ICM) strategy has resulted in eradication of carp from Lake Crescent and contained their population to Lake Sorell, repeatedly demonstrating an ability to fish down new cohorts rapidly. Use of radio-tagged "Judas" male carp to locate and remove aggregations has been the largest contributor (e.g. accounting for >80% of carp captured in Lake Crescent). Despite low adult carp numbers spawning occurred in Lake Sorell (2009), prompted by exceptionally high water levels. Relatively large size of the lake (than Crescent) and resource limitations did not help. Male Judas carp were implicated in this recruitment prompting their removal and replaced by juvenile Judas in 2011- ID feeding aggregations; mature Judas also ID spawning aggregations.
In absence of Judas technique, it is deemed impossible to achieve control let alone eradication, prompting preliminary sterilization trials in 2010. Albeit with low success rate (1/11) the trials were encouraging with further comparative anatomical examinations revealing valuable clues for future refinement. In light of this progress multiple sterilized fish will be ready for deployment by October 2013, should the refinement/experiments commence this spring (2012). Two annual carp programme reviews (10-11 May 2011 and 19-20 May 2012) have recommended the technique/s be developed systematically—including alternative approaches along with hormonal, histological, behavioural and fertility assessment.
Primary objective is to develop/deploy behaviourally least compromised sterile Judas fish. Fish with compromised reproductive behaviour though not preferred are useful in betraying the numerically dominant non-reproductive aggregations.
Expected outcomes will contribute to long-term goals of recreation and commercial fishing sectors in inland waters of Tasmania, with likely interest to other states.
1. Refine the surgical sterilization (cauterization) technique
2. Trial two additional sterlization approaches—tubal ligation and Essure
3. Optimise superlorin mediated chemical sterlization
4. Evalute the success of the techniques, including regular assessment of blood testosterone levels, spermiation and fertility of the animals
5. Record gross anatomical and histological changes following surgical and or chemical sterilization of select animals
6. Deploy successfully sterilized carp with radiotransmitters in the lake and map their behaviour — ability to integrate into the population and assist in location of aggregations — general and reproductive
Final report
ISBN:
978-0-646-92546-2
Author:
Jawahar Patil and John Purser
Final Report
•
2014-08-15
•
2.61 MB
2012-039-DLD.pdf
In a world first, the project successfully developed reliable procedures for surgical sterilization of male carp and demonstrated that these when deployed as sterile ‘Judas’ fish are as competent as male ‘Judas’ carp in betraying the locations of feral populations thus assisting their capture. Significantly, the sterile Judas fish will mitigate future risks associated inadvertent contributions to spawning and recruitment. The sterile Judas carp are now an integral component of the ongoing carp eradication program at Lake Sorell, Tasmania.
Following the discovery of the carp Cyprinus carpio in lakes Crescent and Sorell in 1995, the Inland Fisheries Service (IFS) decided to eradicate both the populations. While, the Lake Crescent population has been successfully eradicated, the Lake Sorell population has been lingering, owing to inadvertent spawning and recruitment in 2009 —contributed by Judas carp, which are otherwise central to the eradication strategy at the lakes. Responding to the crisis and urgent need to mitigate future recruitment risks this project explored chemical and surgical sterilization options with a view to replace male ‘Judas’ carp with sterile ‘Judas’ carp.
The primary objective of the project was to develop reliable sterilization technique/s that did not significantly compromise the behavior of the sterilized individuals. Behavioral integrity of the sterilized individuals when fitted with radio-transmitters and deployed as Judas fish (i.e. to assimilate and integrate seamlessly into the wild populations) was/is critical to betraying the locations of aggregations allowing targeted fishing and removal of feral populations.
Keywords: Common carp, Cyprinus carpio, steroid hormones, Superlorin, testis, tubectomy, Radio-tracking, Ultra sound.
PROJECT NUMBER
•
2011-077
PROJECT STATUS:
COMPLETED
ORGANISATION:
SARDI Food Safety and Innovation
PROJECT NUMBER
•
2017-152
PROJECT STATUS:
COMPLETED
Social Matters Workshop
The project brought together Australian seafood industry social scientists for the first time ever in a specific and dedicated meeting, to discuss our identity, our role in governance, our past and our future. The Social Matters workshop ran over two days and involved 20 scholars, researchers and...
ORGANISATION:
Deakin University Geelong Waterfront Campus
PROJECT NUMBER
•
2008-103
PROJECT STATUS:
COMPLETED
Tactical Research Fund: Adapting to change - minimising uncertainty about the effects of rapidly-changing environmental conditions on the Queensland Coral Reef Fin Fish Fishery
With the severity and intensity of tropical cyclones predicted to increase with global climate change (Webster et al. 2005), the need to understand the effects of these events on fisheries production is paramount. The northern tropical margin of the Australian continent is subject to tropical...
ORGANISATION:
James Cook University (JCU)
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