PROJECT NUMBER
•
2018-067
PROJECT STATUS:
COMPLETED
ORGANISATION:
University of Tasmania (UTAS)
6 results
PROJECT NUMBER
•
2017-100
PROJECT STATUS:
COMPLETED
ORGANISATION:
Fisheries Research and Development Corporation (FRDC)
PROJECT NUMBER
•
2015-034
PROJECT STATUS:
COMPLETED
ORGANISATION:
Fisheries Research and Development Corporation (FRDC)
PROJECT NUMBER
•
2006-012
PROJECT STATUS:
COMPLETED
ORGANISATION:
University of Tasmania (UTAS)
SPECIES
International symposium on cephalopod lifecycles: biology, management and conservation
Project number:
2005-307
Project Status:
Completed
Budget expenditure:
$20,000.00
Principal Investigator:
Natalie Moltschaniwskyj
Organisation:
University of Tasmania (UTAS)
Project start/end date:
29 Jun 2005
-
30 Aug 2006
Contact:
FRDC
In Australia and internationally catches of cephalopods are increasing which is a dramatic contrast to the trend of declining finfish fisheries worldwide. Industry meetings in Australia (Tasmania and Commonwealth) and internationally repeatedly identify the lack of information available about how to manage cephalopod fisheries. It is clear that we need to identify management strategies to use for short-lived species such as cephalopods. This symposium is explicitly focused on management and conservation issues that need to be addressed in the context of the short life-spans, limited reproductive period and fast growth typical of cephalopods.
The CIAC Symposia will provide a valuable forum to bring together expertise from a range of sectors including academics, fisheries researchers, and managers to addressing management and conservation issues.
Within the theme of “Cephalopod lifecycles: biology, conservation and management” there will be a series of sessions that will address issues related to cephalopods and their relevance in a broader marine biological framework particularly with respect to conservation relevant to coastal and ocean ecosystems.
1. To host the Seventh Triennial Symposium of the Cephalopod International Advisory Council (CIAC) in February 2006.
2. To publish a special volume in an international journal that will provide a series of leading benchmark publications in the field of cephalopod biology and fisheries management.
Final report
Author:
Natalie Moltschaniwskyj
Final Report
•
2008-02-05
2005-307-DLD.pdf
The University of Tasmania was invited to host the 7th triennial symposium of the Cephalopod International Advisory Council (CIAC) in February 2006. This is the premier international cephalopod symposium attended by scientists, industry, and managers from around the world.
The ‘International Symposium on Cephalopod Lifecycles: biology, management & conservation” was held from February 6-10 2006 at the Hotel Grand Chancellor in Hobart, Tasmania. The symposium was attended by 181 delegates from 26 countries, with 179 abstracts submitted for oral or poster presentations. A total of 82 oral presentations were delivered.
In the tradition of CIAC symposia there was a single session, highlighting the generic interests of cephalopod biologists and the recognition that research of cephalopods has traditionally encompassed a range of biological disciplines.
The four days of oral presentations covered a range of areas relevant to cephalopod biology including; Movement & Migration, Systematic & Biogeography, Early Life History, Reproductive Biology & Ecology, Management & Conservation. Keynote speakers were invited to present topics in areas that were considered to be highly relevant to cephalopod biology and ecology, such as trophic linkages (Dr Yves Cherel) and fisheries management (Dr Marek Lipinski).
A poster session on one evening recognised the value of the presentation medium, with several posters employing technology to communicate concepts and ideas. The winning student poster employed 3-dimensional computer graphics to portray and explain the complex morphology of these soft bodied molluscs.
The Symposium was opened by the Governor of Tasmania, His Excellency, the Honorable Mr William Cox, AC RFD ED. In his welcoming address His Excellency highlighted the contribution that Tasmanian scientists and graduate students are making to cephalopod biology and particular how this science is being taken up by fisheries managers.
Worldwide catches of cephalopods are increasing; this contrasts with the trend of declining finfish fisheries worldwide. However, it is acutely evident that applying finfish management models to these unique molluscs is inappropriate. There is increasing need to develop new management models that are built upon the worldwide expertise of cephalopod biologists and fisheries managers. This symposium addresses the Australian Government’s national research and technology priority of ‘An Environmentally Sustainable Australia - Sustainable use of Australia’s biodiversity’.
Fisheries biologists and managers from Australia represented States (NSW, South Australia, Queensland, and Tasmania) and Commonwealth cephalopod fisheries, providing a useful perspective on the state of knowledge of these fisheries. Contributed talks from international fisheries biologists also provided recent and new approaches in modelling squid stocks and issues facing fisheries biologists in other countries.
Keywords: squid, cuttlefish, octopus, conference
Project products
Scientific publication
One of the objectives of 2005-307 was to publish a special volume in an international journal that will provide a series of leading benchmark publications in the field of cephalopod biology and fisheries management.
A total of 41 publications were reviewed for inclusion in the special volume of Reviews in Fish Biology and Fisheries, which can be found here.
Arrow squid in southern Australian waters - supplying management needs through biological investigations
Project number:
1999-112
Project Status:
Completed
Budget expenditure:
$177,075.00
Principal Investigator:
George Jackson
Organisation:
University of Tasmania (UTAS)
Project start/end date:
25 Jul 1999
-
10 Jun 2004
Contact:
FRDC
SPECIES
The recent steps by AFMA to commence discussions on squid management issues and the recent formation of the SquidMAC underpin the increasing importance of squid as a fishery target. Australian fishery managers are in a unique position to obtain basic biological data on arrow squid before they are subject to considerable pressure. In the next several years managers will be faced with developing policy for sustained squid exploitation. However, currently there is scanty biological information with which to base sound scientific management decisions.
There are 3 main needs for the sustained development of the arrow squid fishery:
1) age and population dynamics
Dunning (1988) noted that a more thorough understanding of squid life histories and population dynamics is an essential prerequisite to responsible management of the existing and potential commercial fisheries for ommastrephid squids. There has been no ageing research on Australian arrow squid. We therefore don’t know how old they are, how fast they grow, what their form of growth is and when they hatch. The use of statolith ageing techniques has revolutionised our understanding of squid age, growth, population dynamics. We now know that life spans are measured in days not years (eg. Jackson & Choat 1992, Jackson 1994). Managers therefore face the unique problem of dealing with a completely new population each fishing season. Moreover, squid are known to show extreme plasticity in growth depending on the season of hatching (eg. Jackson et al. 1997).
2) maturity and reproduction
It is currently unclear where, when and how often arrow squid spawn. Furthermore, the effect that reproduction has on body condition or tissue integrity is unknown. Such information is relevant to the timing of fishing effort and condition of squid caught.
3) genetics
An important question is: what is the genetic structure of arrow squid in Australian waters? This is especially relevant now that arrow squid are managed as a Commonwealth fishery. Currently, we do not know if arrow squids form a single population or whether there are discrete stocks within Australian waters, and whether the population is static or migratory. Furthermore, is the arrow squid stock in Australia genetically distinct from arrow squid stock in the northern waters of New Zealand? Although the northern population of arrow squid in New Zealand is the same species found in Australia (Nototodarus gouldi) we have no information on whether there is mixing of the two populations. If the two countries share the same genetic pool than management considerations take on international significance. The genetic structure of squid is further clouded by their high incidence of cryptic speciation.
This project fits squarely within FRDC’s strategic priority of Program 1: Resources Sustainability. This work will therefore provide needed data for priority areas of knowledge of wild fish resources for sustainable management, general biology and genetics and stock definition (FRDC 1996).
References:
Dunning, M.C. (1988). Distribution and comparative life history studies of deepwater squid of the family Ommastrephidae in Australian waters. PhD. Thesis, University of Queensland.
Jackson, G.D. (1994). Application and future potential of statolith increment analysis in squids and sepioids. Can. J. Fish Aquat. Sci, 51: 2612-2625.
Jackson, G.D. & J.H. Choat (1992). Growth in tropical cephalopods, an analysis based on statolith microstructures. Can. J. Fish. Aquat. Sci., 49: 218-228.
Jackson, G.D., J. W. Forsythe, R.F. Hixon & R.T. Hanlon (1997). Age, growth and maturation of Lolliguncula brevis (Cephalopoda: Loliginidae) in the Northwestern Gulf of Mexico with a comparison of length-frequency vs. statolith age analysis. Can. J. Fish. Aquat. Sci., 54: 2907-2919.
1. Undertake extensive statolith age studies to determine validated age, growth rates and life spans of arrow squid throughout the fishing region both spatially and temporally
2. Assess rates and timing of maturity, and the effect that the maturation process has on muscle growth and body condition of arrow squid.
3. Identify squid stocks using genetic tools to determine if there is a single or multiple stocks and whether the Australian stock is separated from the New Zealand stock
Final report
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