Résultats de la recherche

1. Preliminary investigations into a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region

   Abstract:  In 2013, the Scientific Committee of CCAMLR could not achieve consensus on a stock ... status for Antarctic toothfish in the Amundsen Sea Region (ASR- Subarea 88.2 SSRUs 88.2C-H) and ... identified several areas for further work. This work was carried out and presented to WG-SAM in 2014, who ... noted that the assessments were unable to fit the patterns in the recaptures of tagged fish seen in SSRU ...

   Meeting Document : WG-FSA-14/57 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

2. Simulations to evaluate model performance for Antarctic toothfish stock assessment in the Amundsen Sea region

   shown promising results to date, with 8 interseason tags recaptured in the South area in 2016 and 12 ... (preliminary recaptures) in 2017. The aim of this paper is to ascertain when the Amundsen Sea region stock ... in estimates of biomass, the likely biases, and to set expectations for mark-recapture data for the ... models showed that using two independent models lead to higher estimates of biomass in the North and ...

   Meeting Document : WG-SAM-17/40 : Auteur(s): S. Mormede and S. Parker

3. Fish by-catch in the krill fishery: 2017 update

   Abstract:  Data on fish by-catch in the krill fishery from commercial catch data (100 153 hauls ... evidence of  an increase in the data quality from the observer scheme,  as well as an increase in the ... reporting of fish by-catch in the commercial krill fishery catch data. There was a high degree of overlap in ... the most frequently reported taxa in the C1 data and SISO data, with Lepidonothen larseni the most ...

   Meeting Document : WG-FSA-17/04 : Auteur(s): CCAMLR Secretariat

4. Soviet krill fishery in 1977–1992, Part 1. Distribution, fishing effort, interannual situation patterns

   Abstract:  The data on Soviet krill fishery in i977-1992 are presented. The fishing effort (FE ... ) developed in 1977-1991 was 50086 fishing days in total. According to the pictures presented FE was ... types of FE distribution in subsequent groups of years: Type I: 1981 and 1982, partly 1979/1980: FE was ... concentrated in subarea 48.1 in January-April, then moved to 48.3 via 48.2. Type II: 1983, 1984, 1985, and 1986 ...

   Meeting Document : WG-EMM-01/57 : Auteur(s): F.F. Litvinov, V.A. Sushin, G.A. Chernega and O.A. Berezhinskiy (Russia)

5. IDENTIFYING PATTERNS IN DIET OF MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) AT SOUTH GEORGIA USING BOOTSTRAPPED CONFIDENCE INTERVALS OF A DIETARY INDEX

   Abstract:  Ontogenetic, inter-annual and regional variations in diet were investigated in mackerel ... icefish, Champsocephalus gunnari, in three successive summer seasons around South Georgia. Stomachs from ... significantly between years and age classes but there was little regional difference in diet. In general diet ... sp. and took smaller quantities of E. superba. In a season of poor krill availability (summer of 2003 ...

   Meeting Document : WG-FSA-08/29 : Auteur(s): C.E. Main, M.A. Collins, R. Mitchell and M. Belchier (UK)

6. Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994

   Abstract:  The diet composition of the icefish Champsocephalus gunnari caught in the Subarea 48.3 ... in February/March 1994 was analyzed using the frequency of occurrence (%) method. Krill (Euphausia ... and Shag Rocks; fish were found in the stomachs more frequently than in past seasons around South ... Georgia, in parallel with the virtual absence of mysids and Thysanoessa spp.. Krill was available for fish ...

   Meeting Document : WG-FSA-94/27 : Auteur(s): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)

7. 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 ... , size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South of ... 48.4; A total of 186 D. eleginoides and 202 D. mawsoni were tagged and released in 2010, leaving a ... total of 794 tagged fish in the water, respectively. A total of 13 D. eleginoides and 22 D. mawsoni were ...

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

8. Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2014–15

   Abstract:  We provide an update of the descriptive analyses of the toothfish tagging programme in ... and 2473 recaptured, and 1191 Patagonian toothfish released and 103 recaptured since 2001. In recent ... catch in the Ross Sea region. Tag recapture data showed that most fish are recaptured only a short ... . The 308 recaptures in the Ross Sea region in 2014 was the highest observed, which then reduced to 183 ...

   Meeting Document : WG-FSA-15/37 : Auteur(s): S.J. Parker and S. Mormede (New Zealand)

9. Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) through 2018/19

   Abstract:  This report summarises fishing catch and effort in the Ross Sea region (Subarea 88.1 ... the 2019 season. The implementation of the Ross Sea Region Marine Protected area in December of 2017 ... distributions showed no trends in the different management areas; interannual variability is likely driven by ... spatial patterns in fishing. The strongest time trend in the data is the change in the sex ratio over time ...

   Meeting Document : WG-FSA-2019/07 : Auteur(s): J. Devine, S. Parker and A. Dunn

10. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man made debris at Bird Island, South Georgia, during the 2006 winter and 2006/07 breeding season

    total of 41 winter entanglements were observed in the reporting period compared to 2 observed in the ... previous winter. This is the second highest winter total since records began in 1990 (the highest was in ... loop of rope similar to that shown in appendix three. Plastic packaging bands were the second most ... ) were involved in 56% of all entanglements in winter and 53% in the summer. Overall females made up the ...

    Meeting Document : SC-CAMLR-XXVI/BG/17 : Auteur(s): Delegation of the United Kingdom

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