16 results

Abalone Aquaculture Subprogram: a national survey of diseases of commercially exploited abalone species to support trade and translocation issues and the development of health surveillance programs

Project number: 2002-201
Project Status:
Completed
Budget expenditure: $214,113.00
Principal Investigator: Judith Handlinger
Organisation: University of Tasmania (UTAS)
Project start/end date: 19 Oct 2002 - 30 Aug 2006
:

Need

Abalone Growers Associations in Victoria, Tasmania and South Australia have given their support for the establishment of health monitoring programs of their farm’s stock, and are willing to contribute financially for establishing these and for ongoing monitoring. They see such programs as putting them in a unique position to to enable them to prevent disease in their stock and of meeting future market expectations in relation to health accreditation. This process is threatened by inadequate data on diseases in wild stock, and in some states by limited experience in abalone diagnosis.

Similarly the wild harvest abalone industry recognises vulnerability from a lack of knowledge of the occurrence and distribution of diseases in Australian wild stocks, in a climate where interstate translocation and trade access and quality issues are increasing. They also seek assurances on the health of farmed stock and of stock used for reseeding operations. As a result, the wild abalone sector and fisheries and animal health authorities in these states also strongly support a baseline survey of diseases present in the exploited abalone species, and development of improved surveillance capability.

The project is to acquire this background data on abalone disease, by a health survey covering the natural range of the exploited temperate abalone species. It includes the abalone aquaculture industry and the wild fishery in SA, Victoria, Tasmania, NSW and WA. The project will incorporate associated initial training, permanent presentation on collated results in accessible electronic format (CD and the subprogram’s website), and an abalone disease symposium to develop a net-work of state-based resources for on-going diagnosis, health certification and other shellfish health related functions at reasonable cost to the industry.

Development of the on-going state-based surveillance programs for aquaculture will progress in conjunction with this (without cost to the project), and with consultation with wild fisheries industries and managers, who will also benefit from improved capability for diagnostic and surveillance services.

Objectives

1. To undertake, over approximately one year, a single-round health survey of abalone from representative wild groups of commercial abalone species throughout their range in 5 states, using statistically relevant samples appropriate to maximize the chances of detection of serious diseases and define the disease agents present.
2. To similarly examine equivalent samples from all abalone farms and reseeding operations in these states.
3. From these to develop a database of abalone disease, their location and apparent prevalence (with confidence limits), then to present these findings to the wild and aquaculture industries and State and National government agencies, and to record them pictorially in accessible electronic format.
4. To expand the pool of abalone health expertise by holding an initial training workshop for collaborating pathologists to facilitate the survey, and a national abalone health meeting to present disease and pathology findings to all relevant pathologists and health service providers, to ensure their adoption.
5. Ensure the resulting information and skills are fully utilized by assisting in the development of cost-effective on-going health surveillance programs through collaboration with the abalone aquaculture industry and state authorities.
Environment
Industry
Industry
PROJECT NUMBER • 1999-162
PROJECT STATUS:
COMPLETED

Evaluating the effectiveness of marine protected areas as a fisheries management tool

Marine Protected Areas (MPAs) are being proclaimed around the world with the stated primary purposes of enhancing fisheries stocks and/or conserving marine biodiversity. In Australia, in response to a joint State/Commonwealth agreement to establish a National Representative System of MPAs (NRSMPA)...
ORGANISATION:
University of Tasmania (UTAS)
Industry
PROJECT NUMBER • 2011-201
PROJECT STATUS:
COMPLETED

Implementing a spatial assessment and decision process to improve fishery management outcomes using geo-referenced diver data

Fishing activity was captured across 53,852 one Hectare hex grid cells across Tasmania. A total of 113,164 diving hours were recorded across 125,536 individual fishing events (Table 1). Between 2012 and 2016, the Tasmanian Geo-Fishery Dependent Data (GFDD) program captured between 85 % and 90 % of...
ORGANISATION:
University of Tasmania (UTAS)

Digital video techniques for assessing population size structure and habitat of greenlip and Roe’s abalone

Project number: 2002-079
Project Status:
Completed
Budget expenditure: $288,213.00
Principal Investigator: Anthony Hart
Organisation: Department of Primary Industries and Regional Development (DPIRD) WA
Project start/end date: 30 Mar 2003 - 1 Jul 2007
:

Need

To make more reliable projections on future catches of abalone, catch data needs to supplemented with an appreciation of what is coming into the fishery. This requires information on in-water stocks to allow predictions of new recruitment to be confirmed and recruitment failures to be identified.
Commercial divers have unequalled access to in-water stocks, particularly in remote regions. Although commercial divers regularly dive areas of interest, and could provide a cost effective means of monitoring stocks, this has been difficult to achieve because:
1) the traditional process for collecting data is considered non-independent (compromised) in the hands of commercial divers, and
2) divers perceive caliper and slate technology as slow, an undue interference and insufficient in coverage to supply representative datasets.
What is needed is an efficient, cost effective stock monitoring process that utilises commercial abalone divers, around the time of their normal fishing activities, to give fisheries managers and quota holders critical in-water information for the management of stocks. Recent preliminary trials, where researchers utilised digital video surveys filmed by commercial divers, clearly provides the potential for such a process.
Whereas researchers need such footage as a data source, the video also provides a mechanism for divers to 'ground truth' their own perceptions of change on surveyed reefs and convey what they are seeing to licence owners. Most importantly, such a system gives divers a further opportunity to contribute to stock management and reduce licence fees under cost recovery regimes.
Presently, video is played back and measurements are taken on two software packages. This process needs streamlining so that access to frames and measuring of abalone is time efficient. Measures and images generated from such a process need to be stored in an appropriate database, where they can be accessed through simple interrogation.

Objectives

1. Determine the reliability and usefulness of in-water digital video in getting cost effective, fishery independent counts and measures of abalone (as an alternative to traditional manual techniques).
2. To provide a comparison of abundance and stock structure information (between and within years) for main fishing areas videoed.
3. Develop a time (cost) efficient computer program to extract (frame grab) and measure (within frame) abalone on videotape, and a database where images and data from video can be stored, accessed and interrogated.

Final report

ISBN: 1-921258-13-6
Author: Anthony Hart
Industry
Communities
PROJECT NUMBER • 2016-417
PROJECT STATUS:
COMPLETED

National People Development: Membership of PIEFA to support and encourage the teaching and learning in Australian schools of information related to the Australian Fishing Industry

PIEFA was established in 2007 with bipartisan government support following an extensive series of roundtables and working party meetings supported by the federal Minister of Agriculture. PIEFA became operational in April 2010 with support from the government, education and industry sectors. The...
ORGANISATION:
Primary Industries Education Foundation Australia (PIEFA)
View Filter

Species