Résultats de la recherche
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Modelling catch and effort data using generalised linear models with random cruise effects: trawl fishery for mackerel icefish (Champsocephalus gunnari) in CAMLR Area 58.5.2
, after which time there was a sharp increase in 2001 with a steady decline thereafter. The sharp increase ... models (GLMMs) including data analytic methods for examining the appropriateness of model structure and ... parameter values was presented in WG-FSA-SAM 03-12 using Dissostichus eleginoides in Subarea 48.3 of the ... CAMLR area as an example dataset. The application of these procedures to trawl catches of ...
Meeting Document : WG-FSA-03/35 : Auteur(s): S.G. Candy (Australia)
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Age-at-length of Patagonian toothfish from South Georgia
readings were significantly biased relative to reference ages but the third reading, after the reader had ... Abstract: To provide an age-length key for use in modelling the age structure of the Patagonian ... toothfish stock around South Georgia, we used otoliths to estimate the age of a sample of 264 Patagonian ... toothfish (Dissostichus eleginoides) captured in the longline fishery. We used a thin section grinding ...
Meeting Document : WG-FSA-02/75 : Auteur(s): J. Ashford, M. Belchier, C. Jones and S. Bobko
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A study on calibration for commercial echosounder using bottom backscattering strength in Antarctic
Antarctic krill) over the total acoustic signals were 26.95% and 92.04%, respectively before and after the ... fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... calibration was to analyze the difference between the bottom backscattering strength of the commercial ... echosounder (i.e. ES70) and the scientific echosounder (i.e. EK60) at some transects designated by CCAMLR ...
Meeting Document : SG-ASAM-17/P01 : Auteur(s): S.-G. Choi, H. Lee, K. Lee and J. Lee
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Interactions between cetaceans and fisheries in Southern Ocean
Abstract: Soon after longlining on Patagonian toothfish (Dissostichus eleginoides) started in the ... Southern Ocean in the second half of the 1980’s, interactions of cetaceans with these fisheries became ... apparent. The two species primarily involved were orcas (killer whales) (Orcinus orca) and male sperm ... whales (Physeter macrocephalus). Both species took substantial number of fish from the line primarily ...
Meeting Document : WG-FSA-05/11 : Auteur(s): K.-H. Kock (Germany), M. Purves (South Africa) and G. Duhamel (France)
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Coopération avec d'autres organisations : Accords avec des organisations internationales
the Conservation of Southern Bluefin Tuna (CCSBT) and South Pacific Regional Fisheries Management ... restricted to exchange of reports and invitation to meetings. The Secretariat proposes that this be extended ... tagging program, and to cooperation with the CCAMLR Catch Documentation Scheme for Dissostichus spp. (CDS ... ), sharing CDS data and illegal, unreported and unregulated (IUU) vessel lists. The Secretariat seeks a ...
Meeting Document : CCAMLR-XXXVII/10 : Auteur(s): CCAMLR Secretariat
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Proposition de création d'une aire marine protégée dans la région de la mer de Ross
comments regarding the Ross Sea Region MPA proposal. At the end of CCAMLR XXXIV we submitted a revised MPA ... Abstract: The delegations of New Zealand and the United States submit this revised proposal for ... the establishment of a marine protected area (MPA) in the Ross Sea Region (“Ross Sea Region Marine ... Protected Area”) by the Commission for the Conservation of Antarctic Marine Living Resources (Commission or ...
Meeting Document : CCAMLR-XXXV/25 Rev. 1 : Auteur(s): Delegations of New Zealand and the USA
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Long-distance movements of tagged Patagonian (Dissostichus eleginoides) and Antarctic toothfish (D. mawsoni)
distances after the Chilean research survey for Dissostichus spp. in Subarea 48.2 recaptured one tagged fish ... Abstract: At WG-SAM-16, the Working Group discussed the implications of toothfish moving long ... in 2016 that had been released in Subarea 48.6 in 2011 (WG-SAM-16/20). The Working Group noted that ... to date the majority of tagged toothfish movements were very restricted in distance and requested ...
Meeting Document : WG-FSA-16/25 Rev. 1 : Auteur(s): CCAMLR Secretariat
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Sampling toothfish from longlines with unequal probabilities
does not particularly matter if an observer starts sampling before or after the correct basket arrives ... Abstract: To obtain a representative sample of the catch taken by toothfish longliners, CCAMLR ... observers are recommended to sample a quota of the first 30 fish that are caught during a sampling session ... proportion to toothfish density on the line. The present recommendation therefore indicates sampling with ...
Meeting Document : WG-FSA-03/85 : Auteur(s): J.R. Ashford (USA)
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Diet composition of Antarctic toothfish
Abstract: To identify the important prey items for pre-recruit Antarctic toothfish in the SSRUs ... fishing vessel. In the previous studies, similarities in total FA compositions and the FA profiles in ... muscle tissue of Antarctic toothfish, bycatch specimen and icefish in the stomachs indicated a trophic ... connection between the toothfish and icefish. In this study, similarities in the δ13C values δ15N values of ...
Meeting Document : WG-FSA-16/06 : Auteur(s): Delegation of the Republic of Korea
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Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate
Abstract: The age distribution of breeding female Antarctic fur seals at Bird Island, South ... Georgia, in 1988 was compared with the age distribution of a sample obtained in 1971-1973. The mean age in ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... -1972. Exponential models fitted to the frequency distribution of age-classes greater than age 5 years ...
Meeting Document : WG-CEMP-91/21 : Auteur(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)