Résultats de la recherche

1. Deployment of research hauls in the exploratory fisheries for Dissostichus spp. in Subareas 48.6 and 58.4 in 2011/12

   Abstract:  As of the end of May 2012, four longliners conducted research fishing in the exploratory fisheries in Subareas 48.6 and Divisions 58.4.1, 58.4.2 and 58.4.3a in 2011/12 (Table 1): Hong Jin No. 701 (Korea), Koryo Maru No. 11 (South Africa), Saint André (France) and Shinsei Maru No.3 (Japan

   Meeting Document : WG-SAM-12/06 : Auteur(s): Secretariat

2. Data requirements for research fishing

   Abstract:  There are currently two sets of requirements for reporting data from vessels conducting fishing for research purposes (i.e. research fishing): (1) research fishing conducted under Conservation Measure 24-01 (scientific research) requires that catch, effort and biological data be reported

   Meeting Document : WG-SAM-12/07 : Auteur(s): Secretariat

3. CCAMLR tagging program: tag link status update

   Abstract:  In order to reflect the level of confidence when linking a tag recapture to a tagging event, as well as an indication of the time and effort taken to make the link, the Secretariat introduced in 2011 a tag recapture link status code.  For the 2011 season, a total of 1433 tags have been

   Meeting Document : WG-SAM-12/22 : Auteur(s): Secretariat

4. Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data

   Abstract:  Using the simplest form of an abundance estimator using tag-recapture data, the Lincoln-Petersen equation, we summarise the processes that may occur during a tagging program that lead to difficulty in accurately estimating key parameters, and consequently introduce bias into an abundance

   Meeting Document : WG-SAM-12/23 : Auteur(s): D.C. Welsford and P.E. Ziegler (Australia)

5. Influence of tag numbers, size of tagged fish, duration of the tagging program, and auxiliary data on bias and precision of an integrated stock assessment

   Abstract:  Using a modeling framework for toothfish population dynamics, fishing and data collection, this study investigated how the bias and precision of a CASAL assessment is influenced by various aspects of a tagging program, in particular the effects of the numbers of fish tagged, the duration

   Meeting Document : WG-SAM-12/24 : Auteur(s): P.E. Ziegler (Australia)

6. Are tagging targets set in appropriate terms?

   Abstract:  Currently the target tagging rate to be achieved by vessels fishing in the CCAMLR area is set in terms of the number of fish tagged per mass of fish caught thereby mixing “units” of measure. This note questions whether it is appropriate to set the tagging targets these terms and suggests

   Meeting Document : WG-SAM-12/25 : Auteur(s): R.W. Leslie and C. Heinecken (South Africa)

7. Results of a research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea, February 2012

   Abstract:  At its 2011 meeting, the Scientific Committee agreed that a time series of relative recruitments from a well-designed survey could be a useful input into the Ross Sea stock assessment model and endorsed a proposal to carry out this work once the fishery had closed at the end of the 2011

   Meeting Document : WG-SAM-12/29 : Auteur(s): S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and H.-S. Jo (Republic of Korea)

8. The development of spatially and temporally controlled measures of survival and tag-detection for the CCAMLR tagging program

   Abstract:  A reliable commercial tagging program is critical to the successful assessment and management by CCAMLR of a number of toothfish fisheries in Antarctica. The evaluation of the tagging programme relies on two key aspects (i) that the tagged fish have a good chance of survival and (ii)

   Meeting Document : WG-SAM-12/30 : Auteur(s): S. Mormede and A. Dunn (New Zealand)

9. Recommendations for CCAMLR tagging procedures

   Abstract:  With the recognition that CCAMLR tagging programmes are used for abundance estimation of toothfish and skates, tagging operations need to be appropriately supported through documentation, training, and supplies. This paper reviews how tagging programme information could be effectively

   Meeting Document : WG-SAM-12/31 : Auteur(s): S. Parker, J. Fenaughty (New Zealand), E. Appleyard (Secretariat) and C. Heinecken (South Africa)

10. Drawing on international experience to improve performance of CCAMLR tagging programs

    Abstract:  Mark-recapture methodologies are commonly used to inform the management of fisheries. In addition to answering targeted research questions, tagging programmes are typically used to describe movement patterns relative to stock unit identification or to support spatial disaggregation of

    Meeting Document : WG-SAM-12/26 : Auteur(s): S. Parker and S. Mormede (New Zealand)

Pages