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1. Preliminary investigations of an assessment model for skates and rays in the Ross Sea

   Abstract:  This report presents the data and preliminary results from developmental model for Antarctic skates in SSRUs 88.1H, 88.1I, 88.1J, & 88.1K of the Ross Sea. The developmental model attempted to create a catch history of all skates and rays in the Ross Sea, and integrate these data with

   Meeting Document : WG-SAM-07/4 : Author(s): A. Dunn, S.M. Hanchet, S.L. Ballara and M.P. Francis (New Zealand)

2. An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07

   Abstract:  Descriptive analyses of the toothfish tagging programme carried out in Subareas 88.1 and 88.2 since 2001 are updated. The paper provides a preliminary update of the tag-release and tag-recapture data that were presented at the October 2006 meeting of WG-FSA by including data from New

   Meeting Document : WG-SAM-07/5 : Author(s): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)

3. Revised input parameters and implications for the Antarctic toothfish (Dissostichus mawsoni) stock assessment in Subareas 88.1 and 88.2

   Abstract:  In this paper, we address a number of aspects of the model inputs and parameters of the Antarctic toothfish stock assessment for the Ross Sea fishery. In particular we review catch history, length-weight relationships, catch-at-length and catch-at age. In addition, we report some

   Meeting Document : WG-SAM-07/6 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)

4. Comparison of estimators of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial Distribution

   Abstract:  The incorporation of “effective sample size” (ESS) in integrated assessments is an approximate but simple way of modelling the distribution of catch-at-age or catch-at-length frequencies using a multinomial likelihood when there is extra-multinomial heterogeneity in age class or length

   Meeting Document : WG-SAM-07/7 : Author(s): S.G. Candy (Australia)

5. Proposed methodology for the assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (Division 58.4.3b)

   Abstract:  In 2006 the CCAMLR scientific committee noted several features of exploratory Dissostichus fisheries in the southern Indian Ocean (58.4) which gave cause for concern as to the status of the resource in this area, and the lack of a scientific basis for setting catch limits in these areas

   Meeting Document : WG-SAM-07/8 : Author(s): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)

6. Update of the Antarctic toothfish stock assessment for the Ross Sea by means of the TSVPA separable cohort model

   Abstract:  An updated Antarctic toothfish (in the Ross Sea) stock assessment was done by means of the TISVPA model (2006 data on catch-at-age and cpue and the data on tag recaptures were included). All the three sources of information taken separately (and together) indicate historical increase in

   Meeting Document : WG-SAM-07/9 : Author(s): D. Vasilyev, K. Shust, V. Babayan and T. Bulgakova (Russia)

7. Extension of the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   Abstract:  Three Operating Models (OMs) reflecting an “Optimistic”, “Intermediate” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region are developed which take account of the different selectivities of past longline and pot fisheries. These models are

   Meeting Document : WG-SAM-07/10 : Author(s): A. Brandão and D.S. Butterworth (South Africa)

8. Preliminary assessment of the South Georgia ray populations

   Abstract:  We modelled the ray population at South Georgia using a surplus production model implemented in a Bayesian framework. Catch and CPUE data were reconstructed for the time series 1985 – 2006 from a variety of sources, and included the consideration that since 2004 the practice of cutting

   Meeting Document : WG-SAM-07/11 : Author(s): D.J. Agnew, R. Mitchell, T. Carruthers, J. Roberts, R. Hillary and J. Pearce (United Kingdom)

9. A spatial multi-species operating model of the Antarctic Peninsula krill fishery and its impacts on land-breeding

   Abstract:  An updated version of the Spatial Multi-species Operating Model (SMOM) of krill-predator-fishery dynamics is described. This has been developed in response to requests for scientific advice regarding the subdivision of the precautionary catch limit for krill among 15 small-scale

   Meeting Document : WG-SAM-07/12 : Author(s): É.E. Plagányi and D.S. Butterworth (South Africa)

10. An assessment strategy evaluation framework for testing the application of a CASAL based management system to the HIMI fishery

    Abstract:  A useful way of testing assessment methodology and related decisions is through the framework of management strategy evaluation and the simpler form of assessment strategy evaluation. Such a framework uses an operating model of the system to generate data against which the assessment

    Meeting Document : WG-SAM-07/13 : Author(s): I.R. Ball and S.G. Candy (Australia)

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