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1. Improving mechanistic understanding between larval krill, krill recruitment, and sea ice

   Abstract:  Antarctic Krill, Euphausia superba, is the key species of the Southern Ocean ecosystem ... . Earlier analysis suggested decrease in krill abundance by 50% since the mid 1970’s to early 2000’s in the ... Southwest Atlantic Sector, which has been specifically linked to a decrease in extent and duration of sea ... , timing and the duration of winter sea ice cover. The underside structures of sea ice are generally ...

   Meeting Document : WG-EMM-18/07 : Author(s): B. Meyer and S. Kawaguchi

2. Progress towards validation of ageing of Dissostichus eleginoides using otoliths

   determination in this species: investigating the accuracy of ageing small fish (1000 days; and developing ... techniques to analyse the daily marks at the centre of the otolith in order to pinpoint the position of the ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ...

   Meeting Document : WG-FSA-04/67 : Author(s): K. Krusic-Goluband R. Williams (Australia)

3. Spawning locations of mackerel icefish at South Georgia

   place over much of the shelf at depths to around 500 m. Conservation measures for this species have ... distribution of catch rates is shown in Figure 1. The mean number of C. ~ I I I Z I I ~ Y ~ per net was very ... (Bathydraconidae) of the Scotia Sea (Anarctica). J o u ~ n a l ofIcl?tlzyology, 13 (2 ) : 204-215. Slosarc~yk ... and abundance of pelagic eggs at South Georgia. Arzt. Sci., 8: 267-271. Month Figure 1: Mean number ... . There are also indications of a possible second spawning season in January, although the evidence is ... :  Historical information on the distribution of spawning and larval mackerel icefish (Champsocephalus gunnari ... inshore spawning at South Georgia during April within and close to the bays on the north side of the ... island. Some spawning almost certainly occurs over much of the island shelf, although is this appears to ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Author(s): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock

4. CCAMLR observer manual questionnaires: summary results of preliminary analysis during its introductory period

   Abstract:  Preliminary analysis of data from the questionnaires of krill fishery behavior in ... CCAMLR observer manual was undertaken. The analysis revealed possible inconsistency in definitions of the ... event codes among different skippers. Some suggestions were made to improve the quality of questionnaire ... format to better understand the nature of the fishery. Author(s):  S. Kawaguchi and S. Nicol (Australia ...

   Meeting Document : WG-EMM-05/31 : Author(s): S. Kawaguchi and S. Nicol (Australia)

5. Target strengths of krill at 136 and 20 kHz

   . Ensonification of encaged live krill. For aggregations with mean lengths from 45 to 50 mm the mean single-krill ... target strengths range from-68 to-69 dB at 136 kHz. For aggregations with mean lengths from 43 to 47 mm ... the mean single-krill target strengths range from-71 to-77 dB at 20 kHz. Trawl hydroacoustic method ... . For aggregations with mean lengths from 47 to 50 mm the mean target strengths ranged from-71 to-75 dB. At the same ... . For aggregations with mean lengths from 45 to 50 mm the mean single-kriU target strengths range from -68 to -69 dB ... at 136 kRz. For aggregations with mean lengths from 43 to 47 mm the mean single-kriU target strengths ... range from -71 to -77 dB at 20 kRz. Trawl hydroacoustic method. For aggregations with mean lengths ... from 47 to 50 mm the mean target strengths ranged from -71 to -75 dB. At the same frequency ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 141–157 : Author(s): Kasatkina, S.M.

6. On reproduction of Electrona carlsbergi Tåning

   has been ascertained that Electrona carlsbergi breeds in the notal zone. The ripening of females ... 150 to 650μm, and it reaches 900μm in hydrated oocytes. Maturation of ovaries is continuous, the ... Abstract:  A subject of the present study is Electrona carlsbergi from the Atlantic sector of the ... Southern Ocean. Results from histological examination of gonads are presented. From materials available it ...

   Meeting Document : WG-FSA-90/20 : Author(s): G.P. Mazhirina (USSR)

7. Food consumption by predators in a CCAMLR integrated study region

   for each predator species. We denote the energy content of food type k on day i by c(i,k). The mean energy ... on anyone day and that they do it for the same (mean) length of time, while allowing for differences ... mean maximum (Le., greatest distance using mean values of parameters) foraging range of a species ... of Foraging Effort and of Food Taken For birds rearing chicks, the data on mean flight speeds, flight ... consumption of seabird predators is provided. This model is a development of earlier ones used in the South ... / Description:  A detailed description of the structure and mode of operation of a model for estimating food ... provided, illustrating the changes produced by using these new sub-models. Results of initial sensitivity ... analyses indicate particular sensitivity to estimation of metabolic energy requirements. The system is ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Author(s): Croxall, J.P., C. Ricketts and A.G. Wood

8. Acoustic data analysis and models of krill spatial distribution

   used in three descriptors of krill spatial aggregation: power spectra for krill biomass fluctuations in ... space, semivariogram (spatial autocorrelation of krill biomass) and the frequency distribution of krill ... biomass estimate. The wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales ... smaller than 1 km the spectrum appears to lose its power significantly. The semivariance of biomass does ...

   Meeting Document : SC-CAMLR-VII/BG/25 : Author(s): United States of America

9. Lipid metabolism features of Antarctic toothfish Dissostichus mawsoni (Nototheniidae)

   specimens of Antarctic toothfish Dissostichus mawsoni (Perciformes: Nototheniidae) caught in the Ross Sea ... are given. Blood plasma, tissues mesonephric kidney, liver and spleen were studied for the content of ... . Biochemical status of immune organs depending on the structural and functional characteristics of tissues was ... Antarctic toothfish Dissostichus mawsoni (Perciformes: Nototheniidae) caught in the Ross Sea are given ...

   Meeting Document : WG-FSA-16/P02 : Author(s): I.I. Gordeev, D.V. Mikryakov, N.I. Silkina and A.S. Sokolova

10. Reviewing the need for bottle test for specified longline gear configurations

    not seek to change any of the practical and highly effective measures currently in place. Author(s ... of bottle tests to allow an exemption from night setting in CCAMLR longline fisheries. There are now ... update (and simplify) the seabird mitigation elements of these measures. The changes that are proposed do ... Abstract:  During the SISO review several questions were raised about the need for continued use ...

    Meeting Document : WG-FSA-14/24 : Author(s): Secretariat

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