Seventh International Conference and Workshop on Lobster Biology and Management
In 1999/2000 the estimated value of Australia’s rock lobster industry was $544 million and this represented 23% of the landed value of all Australian fisheries.
As Australia’s premier fisheries export there is a need to ensure that our lobster fisheries are managed sustainably and that they clearly demonstrate to the world that our research and management is ‘state-of-the-art’ and ‘worlds best practice’. By hosting this conference in Australia, it will enable the maximum number of fishery scientists, managers and industry representatives to attend and meet with scientists, managers and fishers associated with lobster fisheries around the world.
An area of particular interest to Australia includes lobster ecosystem models and assessment. There is a need in all of Australia’s lobster fisheries to address ecosystem issues for both Environment Australia and forthcoming ecological sustainable development requirements. In association with these requirements there is a need for Australia’s premier fisheries export industry to obtain and maintain industry accreditation for current and developing markets. Several Australian States, with the support of the FRDC Rock Lobster and Aquaculture Subprogram are investigating the potential for a rock lobster aquaculture industry. To aid this development there is a need to be abreast of the latest developments around the world.
The conference will also provide an opportunity to hear of the application of new technology and to form partnerships with experts pioneering new developments.
Final report
Rock Lobster Enhancement and Aquaculture Subprogram: advancing the hatchery propagation of rock lobsters
Rock Lobster Enhancement and Aquaculture Subprogram: evaluating the release and survival of juvenile rock lobsters released for enhancement purposes
Enhancement offers a mechanism to increase production of rock lobsters, both by increasing production from coastal reef and by providing a mechanism for biologically neutrality in the harvest of puerulus (and thus overcomes a barrier to ongrowing). Additional benefits include the ability to increase biomass and egg production in regions considered depleted, which enhances resource sustainability.
While the potential benefits of enhancement are broad, the value of the concept is critically affected by the survival of juveniles after release. Low survival would reduce the economic benefit and also nullify assumptions on the biologically neutrality of the harvest of puerulus.
The proposed project addresses the need for information on how to release juveniles (or condition juveniles prior to release) so that survival is optimised. Future release efforts will be assisted by information on habitat choice, so that return from enhancement is maximised, in terms of animals surviving through to harvest size. Large scale experiments tracking the cohorts of released juveniles will evaluate enhancement on a pilot-scale - patterns apparent in small scale experiments may not hold true in larger releases so larger scale experimental releases are considered vital.
Final report
Rock Lobster Enhancement and Aquaculture Subprogram: propagation of rock lobster - development of a collaborative national project with international partners
Expansion of output from the rock lobster fishery cannot be achieved using traditional fishing methods as most wild stocks are already fully exploited. It is therefore highly desirable to develop an aquaculture technique that can increase the long term production of rock lobster, in a sustainable manner.
It is presently not possible to produce puerulus from eggs on a large scale although it has been achieved in the laboratory in both New Zealand and Japan and there is extensive research being conducted in the USA. Very little information on puerulus production exists in the literature. If the problem of large scale consistent producton of puerulus is to be solved, then it needs a collaborative approach. If Australia is to benefit from the potential market for cultured rock lobster, then it must be in a position to design and import culture technology quickly.
At present there is very limited activity in Australia, the only research being conducted on rock lobster propagation is in Tasmania. However, there are:
a: opportunities for tapping overseas experience; and
b: nodes of expertise in Australia which require better co-ordination
The full collaborative project required to achieve the goal will be highly complex with a number of components and organisations. These organisations control major resources that could be co-ordinated and brought to bear on the problem of rock lobster propagation.
This proposal is seen as a fundamental first step in bringing together the groups and developing the project. FRDC funding is required for this task in order to provide a national focus and better cohesion between groups.