Résultats de la recherche
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A updated population status model for the Patagonian toothfish, Dissostichus eleginoides, at Kerguelen Islands (Division 58.5.1) using CASAL
Abstract: A stock assessment of the Patagonian toothfish (Dissostichus eleginoides) at Kerguelen ... Islands (CCAMLR Division 58.5.1) was undertaken using the modelling software CASAL, based on different ... statistical and biological datasets: abundance estimation from the POKER 1 (2006) and 2 (2010) surveys ... -length data... CASAL is a simple, single-sex, single-area population model. The spatial complexity in the ...
Meeting Document : WG-FSA-12/09 : Auteur(s): A. Rélot-Stirnemann (France)
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in Subarea 48.6 in 2014/15
Abstract: Most things related to Dissostichus spp. in the eastern side of Antarctic has not been ... known well as namely the area is data poor areas. In the Division 58.4.1 there are two stocks; one ... extends from the SSRU 58.4.1C to the SSRU 58.4.2A, and the other one to the SSRU 58.4.1H. The population ... sizes would be vulnerable like the neighbour divisions if there is the same population. During the 2004 ...
Meeting Document : WG-FSA-14/37 : Auteur(s): Delegation of the Republic of Korea
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A critical issue for feedback management – how do we determine the level of functional overlap between krill fishing operations and penguin foraging activity?
Abstract: The spatial distribution of the Antarctic krill fishery in Subareas 48.1 to 48.3 has ... changed over time. The majority of catches in Subarea 48.1 are now taken south of the South Shetland ... Islands, following regional decreases in seasonal sea-ice cover. As the cumulative spatial footprint of ... the fishery has expanded along the West Antarctic Peninsula, the cumulative numbers of krill-eating ...
Meeting Document : WG-EMM-15/11 : Auteur(s): P.N. Trathan, J.R.D. Silk, S.L. Hill (United Kingdom) and H.J. Lynch (USA)
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Draft updated data collection plan for the Ross Sea toothfish fishery
Abstract: Data are collected for use in scientific research, the results of which are used to ... the goals the management wishes to achieve. The long-term goals of the Ross Sea fishery based on ... Article II of CCAMLR can be summarised as: the target fished population is above a level which ensures ... stable recruitment; the ecological relationships between harvested, dependent, and related populations ...
Meeting Document : WG-FSA-15/40 : Auteur(s): S.M. Hanchet, S.J. Parker and S. Mormede (New Zealand)
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Fish by-catch in the krill fishery: 2016 update
Abstract: Data on fish bycatch in the krill from Commercial catch data (95 513 hauls) and CCAMLR ... SISO data (11875 hauls) was used to examine the frequency of occurrence, proportion by mass, length ... -frequency distribution and geographic provenance of the key fish taxa reported. There was a high degree of ... overlap in the most frequently reported taxa in the C1 data and SISO data, with Lepidonothen larseni and ...
Meeting Document : WG-FSA-16/04 : Auteur(s): CCAMLR Secretariat
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2004/05
Abstract: The exploratory fishery for Antarctic toothfish (D. mawsoni) has been operating for ... toothfish and the associated bycatch. The 2005 D. mawsoni catch was the highest on record with a total of ... 3477 t against a catch limit of 3625 t. The catch limit was almost reached in Subarea 88.1 and exceeded ... in Subarea 88.2. D. mawsoni was the dominant catch in all 11 SSRUs fished. The main bycatch species ...
Meeting Document : WG-FSA-05/29 : Auteur(s): S.M. Hanchet, M.L. Stevenson, N.L. Phillips and A. Dunn (New Zealand)
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Growth models for D. eleginoides for the Heard Island plateau region (Division 58.5.2) calibrated from otolith-based length at age data and validated using mark-recapture data
Abstract: Length-at-age data for the Patagonian toothfish (Dissostichus eleginoides) caught by ... likelihoods that either did or did not incorporate fishing selectivity and the length-bin sampling frequencies ... for ageing relative to those for random length frequency (LF) samples to give the variable probability ... (VP) of sampling lengths. A segmented linear trawl fishing selectivity function was used where the ...
Meeting Document : WG-FSA-05/64 Rev. 1 : Auteur(s): S.G. Candy, T. Lamb, A.J. Constable and R. Williams (Australia)
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Stratification of catch-at-length data using tree based regression: an example using Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: This paper presents a new approach to the stratification of catch-at-length data of ... Antarctic toothfish (D. mawsoni) in the Ross Sea. Tree based regression techniques were used to stratify the ... sampled catch based on the median length of Antarctic toothfish for each set using the observer length ... frequency data. The median lengths were weighted within the regression by the inverse of the variance ...
Meeting Document : WG-FSA-SAM-05/8 : Auteur(s): N.L. Phillips, A. Dunn and S.M. Hanchet (New Zealand)
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Distribution of the Soviet fishing fleet and catches (CPUE) in Subdivision 48.3 during 1986–1990
Abstract: Analysis of the fishing fleet operation is one of preconditions of krill fishery small ... -scale management units determination. In this work the available data of haul by haul catch statistics ... for the Soviet krill fishery in subdivision 48.3 for 1986-1980 (15 thousand hauls) were analyzed ... . During the fishing season from April to September two basic fishing grounds with a quazi-stationary ...
Meeting Document : WG-EMM-02/63 Rev. 1 : Auteur(s): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and S.M. Kasatkina (Russia)
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Subgroup on Assessment Methods: Report to the Working Group on Fish Stock Assessment 2002
Abstract: Over the last two years, discussions in WG-EMM, WG-FSA and the Scientific Committee ... . WG-FSA noted (paragraph 11.3, WG-FSA 2001) that there are substantial difficulties added to the work ... of the assessment subgroup when new quantitative methodologies are introduced and incorporated into ... assessments undertaken during the time of a single meeting of WG-FSA. Issues related to the current procedures ...
Meeting Document : WG-FSA-02/80 : Auteur(s): A.J. Constable (Subgroup Coordinator)