Search results
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Estimation of tag-loss rates for tagged fish in the Patagonian toothfish (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands in Division 58.5.2
fish. With an initial tag-loss proportion of 2.8% and ongoing tag-loss rate of 0.056 in the longline ... fishery, 99.3% of all double-tagged fish retain at least one tag after one year, and 80.2% after ten years ... . The parameter of annual tag-loss rate in CASAL’s single-tag model was approximated, for a maximum time ... at liberty of 6 years, as l = 0.014 for longline and l = 0.007 for trawl. However, this single tag ...
Meeting Document : WG-FSA-17/21 : Author(s): P. Ziegler
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Implementation of the modified Petersen mark–recapture method in S-Plus
Abstract: The mark-recapture method of estimating toothfish population size described last year ... , which uses a modification of the Petersen estimator to take account of mortality and selectivity, is ... : Implementation of the modified Petersen mark–recapture method in S-Plus Approval: Approved ...
Meeting Document : WG-FSA-SAM-05/7 : Author(s): A. Payne, D.J. Agnew and R. Hillary (United Kingdom)
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A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the 2004/05 season
). A range of model sensitivities were examined, with the base case assuming the Ross Sea fishery as a ... evidence of non-convergence, particular in the declining right-hand limb of the fishing selectivity ... this would have little impact on the estimates of key model parameters and yield estimates. MCMC ... estimates of initial (equilibrium) spawning stock abundance (B0) were 69 400 t (95% credible intervals 47 ...
Meeting Document : WG-FSA-05/33 : Author(s): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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EVALUATION OF VME TAXA MONITORING BY OBSERVERS FROM FIVE VESSELS IN THE ROSS SEA REGION ANTARCTIC TOOTHFISH LONGLINE FISHERIES DURING THE 2008-09 SEASON
most areas south of 60 °S) to monitor longline bycatch for VME indicator organisms. Observers ... these samples for subsequent onshore classification by taxonomists. Comparison of the observer’s ... were reasonably accurate. Classification of two groups requires further development of training ... on the taxonomic composition and distribution of VME taxa in the Ross Sea region and elsewhere in the ...
Meeting Document : TASO-09/08 : Author(s): Carter, M., Parker, S.J., Mormede, S., Tracey, D.M.
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Aspects of the distribution and interannual variations in larval fish assemblages at South Georgia, Antarctica
recorded from the whole Southern Ocean. Demersal forms predominate but many of these have extended early ... life histories as pelagic larval and juvenile phases. Only 30 larval stages of the 103 fish species ... occurring at South Georgia have been identified but these represent all of the dominant and economically ... Georgia. By-catch of young fish during the krill fishery further perturbate recruitment success and may ...
Meeting Document : WG-FSA-93/09 : Author(s): M.G. White (United Kingdom)
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Updated description of Patagonian toothfish (Dissostichus eleginoides) tagging and ageing programs in Division 58.5.2, 1997–2015
Abstract: In 2014, CCAMLR endorsed a TAC of 4410 t of Patagonian toothfish in Division 58.5.2 ... , considerably adding to information on the structure of the population. The ageing program at AAD has produced ... an additional 2559 estimates of age, for fish captured during the 2014 and 2015 Random Stratified ... previous maximum age estimate of 42 years. These data have been used to develop age length keys and a ...
Meeting Document : WG-FSA-15/55 : Author(s): D.C. Welsford, B. Farmer, T.D. Lamb, C. Péron, E. Woodcock and P.E. Ziegler (Australia)
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Spatial distribution and swarm characteristics of Antarctic krill around the South Shetland Islands
Abstract: The spatial distribution and swarm characteristics of Antarctic krill were studied ... , thickness and length of swarms were estimated from the 120kHz data. The full spatial distributions of ... majority of swarms were also found in the upper 100 m layer. The swarm-based method provides a promising ... way not only for biomass estimation but also for the study of swarm characteristics. Author(s): X. Yu ...
Meeting Document : WG-EMM-18/42 : Author(s): X. Yu, X. Wang and X. Zhao
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PROPOSED REVISIONS TO THE CCAMLR SCHEME OF INTERNATIONAL SCIENTIFIC OBSERVATION
Abstract: The United States wishes to submit for the consideration of other Commission Members a ... proposal to revise CCAMLR’s Scheme of International Scientific Observation. The proposal attempts to ... , Designating Members, and Receiving Members. Author(s): Delegation of the USA Title: PROPOSED REVISIONS TO ... THE CCAMLR SCHEME OF INTERNATIONAL SCIENTIFIC OBSERVATION Approval: Approved ...
Meeting Document : CCAMLR-XXVII/32 : Author(s): Delegation of the USA
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Report of the biologist observer on vessel RKTS General Petrov - March to July 1995
Abstract: The report of the biologist- observer contains fishery and bio-statistical information ... periods of operation, fishing regime, data on krill biological state. Author(s): Delegation of Ukraine ... Title: Report of the biologist observer on vessel RKTS General Petrov- March to July 1995 Approval ...
Meeting Document : SC-CAMLR-XIV/BG/32 : Author(s): Delegation of Ukraine
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Report of biologist observer on commercial vessel RKTS General Petrov - April to August 1994
Abstract: The report of the biologist- observer contains fishery and biostatistical information ... periods of operation, fishing regime, data on krill biological state. Author(s): Delegation of Ukraine ... Title: Report of biologist observer on commercial vessel RKTS General Petrov- April to August 1994 ...
Meeting Document : SC-CAMLR-XIV/BG/30 : Author(s): Delegation of Ukraine