Résultats de la recherche
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Indexing maturation of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
and 88.2 have provided more than a decade of observations to aid in understanding the life history and ... the slope or return to the slope in early spring. The absence of high condition fish in the north ... Abstract: The longline fisheries for Antarctic toothfish (Dissostichus mawsoni) in subareas 88.1 ... ecology of toothfish. Updated spawning ogives for males and females support the currently used values ...
Meeting Document : WG-FSA-12/40 : Auteur(s): S. Parker and P. Marriott (New Zealand)
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Towards the development of a stock assessment for Patagonian toothfish in Division 58.4.4, SSRU C on Ob and Lena Banks
455 tonnes, and current biomass was 1 275 tonnes (87.6 % of B 0). An additional uncertainty in the ... Abstract: Following the advice from the CCAMLR Working Group in WG-SAM in 2012, a preliminary ... assessment of stock status of D. eleginoides in SSRU C in Ob-Lena Banks was made using a CASAL catch-at ... -length model. In this preliminary assessment, the model was started in 1990 and catch, proportions at ...
Meeting Document : WG-FSA-12/59 : Auteur(s): K. Taki (Japan)
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Predation release of Antarctic silverfish (Pleuragramma antarctica) in the Ross Sea
predation release hypothesis. In particular, the examination of 422 Antarctic toothfish stomachs showed that ... the amount of silverfish consumed annually by Adélie penguins in this region. This result was ... increases in the number of Adélie penguins breeding in the southern Ross Sea. Mixed trophic impact (MTI ... changes in toothfish biomass and changes to the biomasses of silverfish and Adélie penguins. Essentially ...
Meeting Document : WG-EMM-15/53 : Auteur(s): M.H. Pinkerton, P. Lyver, D. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand).
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Revised assessment models for Patagonian toothfish in research block 58.4.3a_1 of Division 58.4.3a, Elan Bank for the years 2005–2014
300 m) CASAL models for stock status assessments of Dissostichus eleginoides in the research block ... released in 2012 for ELAN_len, ELAN_age and ELAN_lenOB models reflected a large number of recaptures of the ... tags released concentrated in the western area of research block. This is why the removal of 2012 tag ... release data boosted the MPD estimate of B 0 in ELAN_tag model. The selectivity of the right hand limb of ...
Meeting Document : WG-FSA-15/22 : Auteur(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07
Abstract: The descriptive analyses of the toothfish tagging programme carried out in Subareas ... , and 911 Patagonian toothfish released and 43 recaptured since 2001. The number of tags recaptured in ... number caught in 2006, although the nature of these recaptures suggests that assumptions of homogeneous ... provides an update of the preliminary tag-release and tag-recapture data that were presented at the July ...
Meeting Document : WG-FSA-07/40 : Auteur(s): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07
Abstract: Descriptive analyses of the toothfish tagging programme carried out in Subareas 88.1 ... described in this paper for the first time. Overall, a reported total of 12 177 Antarctic toothfish have ... . The number of tags recaptured in the Ross Sea in 2007 by New Zealand vessels was the highest annual ... recapture to date and double the number caught in 2006, although the nature of these recaptures suggests ...
Meeting Document : WG-SAM-07/5 : Auteur(s): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
limit in Area 48 that will be highly likely to achieve the objectives of the convention despite the ... uncertainties in knowledge. This will be part of the management procedure governing the krill fishery. The ... procedures in a simulation framework, using plausible models of the Antarctic marine ecosystem. This paper ... aspects of model development. Part 1 outlines the issues to consider in assessing the requirements of ...
Meeting Document : WG-EMM-04/24 : Auteur(s): A. Constable (Australia)
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... in 1999 and 2000. While the abundances of icefish are lower in 1998 than in 1997, the Age 3 and Age 4 ... tonnes for 2000. These figures may need to be re-evaluated in light of known catches in the 1998 season ... since the survey. Estimates of yield were not made for Shell Bank given the very low abundance in this ...
Meeting Document : WG-FSA-98/54 : Auteur(s): A. Constable and D. Williams (Australia)
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Interannual variability of polynya extent in the Antarctic Ocean
and converted into the yearly mean. The time series of the yearly mean in the whole Antarctic Ocean ... are trending like a pulse wave. In the whole Antarctic Ocean, peak years of polynyas extent are in the ... variability of polynya extent in the Antarctic Ocean Approval: Approved ... ), coastal polynya and open ocean polynya, in the Southern Ocean. Polynya accelerates oceanic and atmospheric ...
Meeting Document : WG-EMM-01/34 : Auteur(s): M. Naganobu and K. Segawa (Japan)
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Assessment models for Patagonian toothfish in research block 58.4.3a_1 of Division 58.4.3a, Elan Bank for the years 2005-2014
m) CASAL models for stock status assessments of Dissostichus eleginoides in the research block ... ELAN_1 model reflected a large number of recaptures of the tags released concentrated in the western area ... of research block. This is why the removal of 2012 tag release data boosted the MPD estimate of B0 in ... ELAN_2 model. The selectivity of the shallow fishery is poorly estimated in MCMC runs for ELAN_1 model ...
Meeting Document : WG-SAM-15/24 : Auteur(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)