Résultats de la recherche

1. Proposal for an extension to the mark-recapture experiment to estimate toothfish population size in the South of Subarea 48.4

   Abstract:  A three‐year tagging study in the South of Subarea 48.4 was initiated in the 2008/09 fishing season with the aims of  providing the data required for assessments of the population structure, size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South

   Meeting Document : WG-FSA-10/40 : Auteur(s): J. Roberts and D. Agnew (UK)

2. Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground

   Abstract:  Attempts to estimate natural mortality, as a single constant M, simultaneously with other model parameters in integrated assessments via CASAL for the Heard and McDonald Islands (HIMI, CCAMLR Division 58.5.2) Patagonian toothfish (Dissostichus eleginoides) fishery have been unsuccessful.

   Meeting Document : WG-FSA-10/41 : Auteur(s): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (Australia)

3. Evaluating the impact of multi-year research catch limits on overfished toothfish populations

   Abstract:  In stocks that have been depleted by overfishing, the benefits of additional fisheries removals for research purposes need to be evaluated against the risks that such catches may contribute to delaying the recovery of such stocks. Through simulating a Dissostichus eleginoides stock that

   Meeting Document : WG-FSA-10/42 Rev. 1 : Auteur(s): D.C. Welsford (Australia)

4. Evaluating length-frequency data and length-based performance indicators in new and exploratory fisheries

   Abstract:  Length-frequency data are routinely collected in CCAMLR’s fisheries and used as inputs to stock assessments. In CCAMLR’s new and exploratory fisheries, stock assessment techniques are still in development and robust conclusions on stock status based on length-frequency data alone have

   Meeting Document : WG-FSA-10/43 : Auteur(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)

5. Reports on stock status and biological information on toothfish obtained from the scientific research survey by Shinsei Maru No. 3 in 2009/10 in the SE sector of Division 58.4.3b

   Abstract:  In accordance with the Conservation Measure 41-07 (2009), a survey was conducted in order to collect information for the stock status and biological information on toothfish in the southeast sector (24 allocated points) of Division 58.4.3b (Banzare Bank), using a commercial bottom

   Meeting Document : WG-FSA-10/45 : Auteur(s): K. Taki, M. Kiyota and T. Ichii (Japan)

6. Reports on abundance and biological information on toothfish in Divisions 58.4.4 a and 58.4.4b by the Shinsei Maru No. 3 in the 2009/10 season

   Abstract:  A survey was conducted in order to collect information for the stock status and various biological information on toothfish in Division 58.4.4a & b (Ob Lena Bank) by using a commercial bottom longline vessel, Shinsei Maru No. 3, from April 30 to June 20. The survey was undertaken

   Meeting Document : WG-FSA-10/46 : Auteur(s): K. Taki, M. Kiyota and T. Ichii (Japan)

7. Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean, Antarctic

   Abstract:  Distribution, relationship between sizes and depths, sex ratio, size composition and maturity condition for Dissostichus eleginoides and D. mawsoni were investigated on Banzare Bank, using the biological data sampled by a Japanese commercial fishing vessel during austral summer from 2006

   Meeting Document : WG-FSA-10/47 : Auteur(s): K. Taki, M. Kiyota, T. Ichii and T. Iwami (Japan)

8. Preliminary studies on age and growth of Dissostichus eleginoides in the Ob-Lena Bank

   Abstract:  Preliminary studies on the age and growth of Dissostichus eleginoides sampled in the 2007/08 season in the Ob-Lena Bank were carried out. The ages of 214 of 3,013 fish sampled by Observers were estimated. The estimated ages ranged from 5 to 46 years for males and from 5 to 50 years for

   Meeting Document : WG-FSA-10/48 : Auteur(s): K. Taki, M. Kiyota and T. Ichii (Japan)

9. Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management

   Abstract:  The South Georgia region supports a large biomass of krill that is subject to high interannual variability. The apparent lack of a locally self-maintaining krill population at South Georgia means that understanding the mechanism underlying these observed population characteristics is

   Meeting Document : WG-EMM-10/P08 : Auteur(s): K. Reid, J.L. Watkins, E.J. Murphy, P.N. Trathan, S. Fielding and P. Enderlein

10. Swarm characteristics of Antarctic krill Euphausia superba relative to the proximity of land during summer in the Scotia Sea

    Abstract:  We studied the relationship between the proximity of land and the distribution and swarming characteristics of Antarctic krill across the Scotia Sea in January and February 2003. Krill swarms identified with a Simrad EK60 (38 kHz, 120 kHz) echosounder were grouped into 4 categories

    Meeting Document : WG-EMM-10/P09 : Auteur(s): T. Klevjer, G.A. Tarling and S. Fielding

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