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1. SUMMARY OF SCIENTIFIC OBSERVATION PROGRAMS UNDERTAKEN DURING 2010/11

   Author(s):  Secretariat Title:  SUMMARY OF SCIENTIFIC OBSERVATION PROGRAMS UNDERTAKEN DURING 2010/11 Approval:  Approved

   Meeting Document : SC-CAMLR-XXX/BG/04 : Auteur(s): Secretariat

2. List of Documents

   Title:  List of Documents Approval:  Approved

   Meeting Document : WG-FSA-SAM-06/03

3. Proposed trawl survey report format

   Abstract:  Trawl surveys are used in CCAMLR waters to estimate abundance of juvenile toothfish (Dissostichus eleginoides) and icefish (Champsocephalus gunnari). Documentation of some past trawl surveys has been insufficient to allow members of WG-FSA to fully interpret the survey results. This

   Meeting Document : WG-FSA-SAM-06/05 : Auteur(s): R.L. O’Driscoll (New Zealand)

4. Using mark-recapture and catch-age data to estimate fishing and natural mortality for the Patagonian toothfish at South Georgia

   Abstract:  This paper develops a Bayesian mark-recapture model for estimating both fishing and natural mortality, and integrates catch-at-age data into the estimation model, to aid in distinguishing between natural and fishing mortality. The model essentially follows tagged cohorts, with the

   Meeting Document : WG-FSA-SAM-06/06 : Auteur(s): R.M. Hillary and D.J. Agnew (United Kingdom)

5. A von Bertalanffy growth model for Division 58.5.2 fitted to length-at-age data and a comparison of predicted with observed growth from mark–recapture data

   Abstract:  Length-at-age data for the Patagonian toothfish (Dissostichus eleginoides) caught by trawl in Heard Island fishery were fitted using a von Bertalanffy (VB) growth model taking into account variable probability (VP) sampling of fish that were aged. Sub-sampling of random length frequency

   Meeting Document : WG-FSA-SAM-06/07 : Auteur(s): S.G. Candy, A.J. Constable, T. Lamb and R. Williams (Australia)

6. Revised estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   Abstract:  This report updates the estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B). We present revised estimates of the von Bertalanffy growth curves, length weight relationship, and natural mortality based on

   Meeting Document : WG-FSA-SAM-06/08 : Auteur(s): A. Dunn, P.L. Horn and S.M. Hanchet (New Zealand)

7. A descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in the Ross Sea up to 2005/06

   Abstract:  A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 and 88.2 since 2001 is presented. The paper updates tag-release and tag-recapture data for fish that were both released and recaptured from New Zealand vessels. It also presents release and recapture

   Meeting Document : WG-FSA-SAM-06/09 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)

8. Developments towards an investigation of potential bias from the analysis of tag–release and recapture data in Ross Sea Antarctic toothfish abundance estimates

   Abstract:  This report outlines developments towards evaluating bias in abundance estimates for the current tagrecapture programme for Antarctic toothfish in the Ross Sea. We present an initial approach that uses the current data on catch (C2 data), tag-recovery effort and tag-release data from

   Meeting Document : WG-FSA-SAM-06/10 : Auteur(s): A. Dunn (New Zealand)

9. An update on the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   Abstract:  Two Operating Models (OMs) reflecting an “Optimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region that were developed last year are updated given further data. These models are for use for initial trials of candidate Management

   Meeting Document : WG-FSA-SAM-06/12 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)

10. Review of some assumptions for modelling Patagonian toothfish dynamics at CCAMLR Subarea 48.3

    Abstract:  During the year 2005 meeting of the WG-FSA two different methods for assessing Patagonian toothfish stock in CCAMLR Subarea 48.3 were available to the Working Group: CASAL and ASPM (WG-FSA-05/16; WG-FSA-05/73). Although the underlying basic age-structure population dynamics models in

    Meeting Document : WG-FSA-SAM-06/13 : Auteur(s): A. Aubone, P.A. Martínez and O.C. Wöhler (Argentina)

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