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Report on fish by-catch during research fishing activities in Division 58.4.4b between 2008 and 2018
eleginoides) conducted by Japan and France in Division 58.4.4b (WG-SAM-2019/08). We analyzed bycatch ... composition in number and biomass during the period 2008-2018 to investigate the inter-annual variations in ... gear, bathymetry and locations (b_1 versus b_2) on bycatch composition and biomass. As shown in others ... catch ratio of about 15%, autolines ratio was up to 70% in some years. Hence, bycatch number and biomass ...
Meeting Document : WG-FSA-2019/53 : Автор(ы): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier
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Estimation of the biomass of krill in Prydz Bay during January/February 1991 and February/March 1992 using echo integration
Abstract: Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... region were undertaken in January/February 1991 and February/March 1992. The surveys indicated some ... association of krill with the shelf break in the western part of the survey area but also found that the shelf ... break was in general not a region of relatively high krill abundance. The mean surface density of krill ...
Meeting Document : WG-KRILL-92/23 : Автор(ы): I. Higginbottom and T. Pauly (Australia)
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 and 120 kHz
Abstract: Differences in the target strength of adult Antarctic krill (Euphausia Superba) at 38 ... and 120 kHz have been inferred from differences in the mean back-scattering strength of swarms ... simultaneously insonified at these two frequencies in studies off the South Orkneys and Elephant Island in March ... 1990. Krill in these areas varied in total length between 36 and 60mm. Backscattering strengths at 120 ...
Meeting Document : WG-KRILL-90/28 : Автор(ы): I. Hampton (South Africa)
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Characterisation of skate catches in the Ross Sea region
Abstract: The toothfish fishery in the Ross Sea region (CCAMLR Subareas 881 and 882) has been ... less). In this paper we summarise the current available fisheries and biological information for skates ... in the Ross Sea Region, including the data collected in the two “Year of the Skate” fishing seasons ... in 2008/09 and 2009/10. The composition of the skate catch by species is uncertain; it is estimated ...
Meeting Document : WG-FSA-10/25 : Автор(ы): S. Mormede and A. Dunn (New Zealand)
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Analysis of maturity of Antarctic toothfish in the Amundsen Sea
(Dissostichus mawsoni) reproductive system, caught by the longliner in the Amundsen Sea in February 2006 and ... (57.1%) in 2006 and IV stages of maturity (83.3 %) in 2007 and testes – the IV stage (55%) in 2007. In ... 2007 the oocytes in the ovaries of 16.7% investigated fish has reached the completed maturation and ... definitive size 6484·10-6m, therefore, Antarctic toothfish was ready to spawn in the Amundsen Sea in March ...
Meeting Document : WG-FSA-10/50 : Автор(ы): S.V. Piyanova and A.F. Petrov (Russia)
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Cameras installation by Ukraine at the Galindez, Petermann and Yalour Islands penguin colonies – CEMP Fund project ‘Establishing a CEMP Camera Network in Subarea 48.1’
Abstract: In the report, which is updated paper WG-EMM-16/55, we describe the season activity in ... the Ukrainian Vernadsky Antarctic Station area on installation CEMP cameras in penguin colonies as ... Network in Subarea 48.1'. Work has been provided under support of the National Antarctic Scientific ... Center of Ukraine that is operating Vernadsky Station. In season 2015/2016 we installed nine cameras at ...
Meeting Document : SC-CAMLR-XXXV/BG/27 : Автор(ы): Delegation of Ukraine
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Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob & Lena Banks for the years 1989/1990 to 2012/13
eleginoides in research block C in Division 58.4.4 b on the assumption of constant year class strength and no ... IUU fishing occurrence in the block. The five models are as follows: 1) catch at length model as ... parameters were not estimated in these models according to the recommendations in the last WG-FSA meeting. In ... proportion of maturity index with stage 2+ and incorporated in the models. The median MPD estimates of the ...
Meeting Document : WG-SAM-14/15 : Автор(ы): K. Taki (Japan)
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Phase-randomisation in an integrated assessment model for Antarctic krill
parameters in alternative configurations of a model assessing the status and productivity of Antarctic krill ... (Euphausia superba, hereafter krill). We fixed the parameters that were not estimated in any given ... configuration at pre-specified values. The model was fitted to survey and fisheries data for krill in Subarea ... configurations. The numbers of parameters estimated in configurations that were able to obtain an invertible ...
Meeting Document : WG-SAM-17/31 : Автор(ы): D. Kinzey, G.M. Watters and C.S. Reiss
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An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
Abstract: This paper follows preliminary work in 2005 and early 2006 in developing an integrated ... assessment for Patagonian toothfish in Division 58.5.2. It focuses on developing an integrated assessment ... -binned mark-recapture data, can be incorporated into the model. Earlier difficulties in using CASAL have ... been resolved. The results presented here indicate a general downward bias in the expected recaptures ...
Meeting Document : WG-FSA-06/64 : Автор(ы): A. Constable, S. Candy, T. Lamb and I. Ball (Australia)
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Monitoring of relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, in years 2000 to 2003
has continued in Potter Cove from 2000 to 2003, covering a continuous sampling period of twenty years ... and in Harmony Cove, Nelson Island, in the austral summers from 2001 to 2003. The decline in trammel ... net catches of fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in ... those found in the early 1980s. At Harmony Cove, the relative abundance of N. rossii showed an increase ...
Meeting Document : WG-FSA-03/89 : Автор(ы): E. Barrera-Oro, E. Marschoff, R. Casaux and B. Gonzalez (Argentina)
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