Résultats de la recherche

1. Pairwise tag performance: testing the sensitivity of the tag detection index and the mortality of tagged fish index

   Abstract:  Vessel-specific indices of tag detection rates and tagging mortality rates were developed in 2012 and further developed in 2013, using a methodology which controls for the spatial and temporal variability of fishing operations by pairing each individual tag release or recapture event

   Meeting Document : WG-FSA-13/50 : Auteur(s): S. Mormede (New Zealand)

2. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–13

   Abstract:  We provide an update of the Bayesian sex and age structured population stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (Subareas 88.1 and SSRUs 88.2A–B), using revised catch, catch-at-age, and tag-recapture data for the 2012–2013 seasons. 

   Meeting Document : WG-FSA-13/51 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

3. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13

   Abstract:  This paper presents the Bayesian sex and age structured population stock assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 covering SSRUs 88.2C, D, E, F, G, and H (SSRUs 88.2C–H). We examined several models including the 2013 implementation of the 2011 base case

   Meeting Document : WG-FSA-13/52 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

4. A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   Abstract:  We present a spatially explicit age-structured population dynamics operating model for Antarctic toothfish in the Ross Sea region, for a medium scale spatial resolution (189 spatial cells) covering the Ross Sea region. In this model run we spatially restrict the stock to cells where at

   Meeting Document : WG-FSA-13/53 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

5. Further review of CCAMLR tagging programmes

   Abstract:  We review tagging protocol changes made in 2012/13 and provide further recommendations to improve the quality of collected tagging programme data, and conduct research to improve effective tag releases and recoveries. We also provide a tagging training module to inform vessel observers

   Meeting Document : WG-FSA-13/54 : Auteur(s): S. Parker and J. Fenaughty (New Zealand)

6. Priority research surveys to address uncertainties in the assessment of toothfish in Subareas 88.1 and 88.2

   Abstract:  We have identified key uncertainties in the stock assessment of Antarctic toothfish in Subareas 88.1 ad 88.2 which could be addressed using specific research surveys and other dedicated voyages. Given the continued uncertainty arising from the relative paucity of abundance data, age and

   Meeting Document : WG-FSA-13/55 : Auteur(s): S. Hanchet, B. Sharp and S. Parker (New Zealand)

7. Proposal to extend fishing season in the Patagonian toothfish longline fishery in CCAMLR Statistical Division 58.5.2

   Abstract:  This paper proposes extending the fishing season in the Patagonian toothfish longline fishery in CCAMLR statistical division 58.5.2 on a trial basis during the 2013/14 and 2014/15 fishing seasons by a further two weeks. This would increase the fishing season to include the period from 1

   Meeting Document : WG-FSA-13/19 : Auteur(s): J. Barrington and B. Baker (Australia)

8. Proposal to extend trial of daytime setting of longlines between 15 and 30 April in the Patagonian toothfish longline fishery in CCAMLR Statistical Division 58.5.2

   Abstract:  This paper proposes extending the trial of daytime setting of longlines between 15 and 30 April in the Patagonian toothfish longline fishery in CCAMLR Statistical Division 58.5.2 to encompass the 2013/14 and 2014/15 fishing seasons.  Extending the trial for a further two years will

   Meeting Document : WG-FSA-13/20 : Auteur(s): J. Barrington and B. Baker (Australia)

9. Steps carried out to check the data inputs to the stock assessment of the Ross Sea region of Antarctica

   Abstract:  We detail the procedure followed to check the Ross Sea CCAMLR fisheries data prior to using them in a stock assessment of Antarctic toothfish (Dissostichus mawsoni). The R codes used in this procedure have been made available to the Secretariat. Author(s):  S. Mormede (New Zealand) and S

   Meeting Document : WG-FSA-13/56 : Auteur(s): S. Mormede (New Zealand) and S. Thanassekos (CCAMLR Secretariat)

10. Comparison of catches for toothfish in 58.4.1, 58.4.2, and 48.6 from vessels with anomalous CPUE

    Abstract:  An accurate history of catch is an important input into the assessment of toothfish stocks, and uncertainty or bias in the amount of catch from an area must be taken into account in the assessment of a stock. In 2013, Korea held a workshop on the anomalous CPUE data reported from some

    Meeting Document : WG-FSA-13/57 Rev. 1 : Auteur(s): A. Dunn, B.R. Sharp (New Zealand), C. Darby (United Kingdom) and O.R. Godø (Norway)

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