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1. Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia

   abundance of the mackerel icefish Champsocephalus gunnari that, since 1990, are not directly attributable to ... scarce on the South Georgia shelf. 3. It is thought that C. gunnari survivorship is closely related to ... that predation by fur seals is likely to play a major role in the observed changes in C. gunnari ... postulated that could explain the episodic declines in the abundance of C. gunnari in the absence of fishing ...

   Meeting Document : WG-FSA-99/63 : Author(s): I. Everson, G. Parkes (United Kingdom), K.-H. Kock (Germany) and I. Boyd (United Kingdom)

2. Report of the first SCAR-CCAMLR Joint Action Group meeting

   meeting in Brussels during the ATCM. The aims of the meeting included examining specific mechanisms that ... topics/issues that are of common interest to SCAR and CCAMLR that could form an agenda for more effective ...

   Meeting Document : WG-EMM-13/16 : Author(s): CCAMLR Secretariat and SCAR Executive Office

3. Updated ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   Butterworth (2004) that permitted annual fluctuations about a deterministic stock-recruitment relationship is ... updated to take account of further catch, GLM standardised CPUE and catch- at-length information that have ... constant annual catches are also shown. These suggest that maintenance of the present TAC of 500 tonnes is ...

   Meeting Document : WG-FSA-04/37 : Author(s): A. Brandão and D.S. Butterworth (South Africa)

4. Start date of the CCAMLR fishing season for Antarctic krill

   start at a time of year that is based upon ecological events, rather than upon a date that is convenient ... Statistical Bulletin (Version 28) to explore whether there are times of year that would reduce the potential ...

   Meeting Document : WG-EMM-16/16 : Author(s): P. Trathan and S. Hill

5. Reproduction in the mackerel icefish (Champsocephalus gunnari) at South Georgia

   macroscopic examination of gonads. Evidence in support of the hypothesis that a proportion of mature fish fail ... to spawn was obtained. Histological examination of ovaries indicates that some ova were undergoing ... regression and resorption at least two months prior to the normal spawning date. It is concluded that the ...

   Meeting Document : WG-FSA-91/07 : Author(s): I. Everson (United Kingdom), K.-H. Kock (Germany), G. Parkes (United Kingdom), D. Cielniaszek and J. Szlakowski (Poland)

6. UPDATE ON ITEMS OF INTEREST TO WG-IMAF

   Economic Zone that are relevant to the work of the IMAF working group. The bycatch of seabirds by fisheries ... within New Zealand’s EEZ in recent years that either breed or forage within the CCAMLR convention area ... mitigation trials that are underway in New Zealand. We also briefly report on the ongoing revision of the ...

   Meeting Document : WG-IMAF-09/16 : Author(s): N. Walker (New Zealand)

7. Phase-randomisation in an integrated assessment model for Antarctic krill

   (Euphausia superba, hereafter krill). We fixed the parameters that were not estimated in any given ... configurations. The numbers of parameters estimated in configurations that were able to obtain an invertible ... objective value, the maximum gradient, the proportion of replicate trials that found the minimum observed ... invertible Hessian matrix. Configurations that estimated more parameters fitted the data better, but the ...

   Meeting Document : WG-SAM-17/31 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss

8. Reasons of differences between distribution and density of mackerel icefish (Champsocephalus gunnari) aggregations in the South Georgia area during summer and autumn periods in different years from the bottom trawl survey data

   the fish. The presence of cold intermediate layer shall be considered to be a negative hydrological ...

   Meeting Document : WG-FSA-05/77 : Author(s): Zh.A. Frolkina (Russia)

9. Matlab code for calculating krill biomass in a survey area

   during the CCAMLR 2000 survey, results from the new code are compared to the original and shown to be ... during the CCAMLR 2000 survey, results from the new code are compared to the original and shown to be ...

   Meeting Document : SG-ASAM-16/03 : Author(s): A. Cossio, J. Renfree and C. Reiss

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

    approach that uses the current data on catch (C2 data), tag-recovery effort and tag-release data from Dunn ... et al. (2005c), but ignores movements of tagged and untagged fish. The results suggest that as the ... spatial pattern of tag releases and recovery effort has changed over the years that the tagging programme ...

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

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