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1. A characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) to 2016–17

   Abstract:  This report summarises fishing catch and effort in the Ross Sea region (Subarea 88.1 ... the 2017 season. In 2017, sea ice constraints were minimal and catch rates were the second highest on ... record, resulting in the shortest season to since the fishery started. Median and 90%ile scaled lengths ... driven by location of fishing. The strongest time trend in the data is the change in the sex ratio over ...

   Meeting Document : WG-FSA-17/07 : Autor(es): S. Parker and S. Mormede

2. Characteristics of interannual variation in aggregation and diurnal vertical migration of Antarctic krill at South Georgia during winter

   Abstract:  We elucidated characteristics of interannual variability in density index, recruitment ... index and diurnal vertical distribution for Antarctic krill in krill fishing grounds (hotspots) at South ... predictable fishing grounds occurred in the restricted areas throughout the study period. Main results are as ... follows: Median CPUEs did not show particularly low values in winter even when krill abundance and ...

   Meeting Document : WG-EMM-18/34 : Autor(es): T. Ichii, Y. Mori, P.N. Trathan, K. Mahapatra, M. Okazaki, T. Hayashi and T. Okuda

3. On peculiarities of icefish (Champsocephalus gunnari) vertical distribution in different habitats

   age groups have been continuously found in the pelagic layer off South Georgia and Kerguelen-Heard ... . Immature fish also partially distribute in the pelagic layer both in the daytime and at night. Mature fish ... , as a rule, are at the bottom in the daytime, however in some years they like immature fish, have been ... caught with pelagic fishing gear in the water column during the daytime. Author(s):  J.A. Frolkina ...

   Meeting Document : WG-FSA-03/54 : Autor(es): J.A. Frolkina (Russia) and V.V. Herasimchuk (Ukraine)

4. Descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 & 88.2 for the years 2000–01 to 2010–11

   Abstract:  Descriptive analyses of the toothfish tagging programme in Subareas 88.1 and 88.2 are ... recaptured since 2001. In recent years, most vessels have achieved or exceeded the target tagging rate of one ... toothfish per tonne of catch in the Ross Sea region. Tag recapture data showed that most fish are recorded ... one to SSRU 88.1I. In addition, several fish moved long distances on the slope and the shelf, with ...

   Meeting Document : WG-FSA-11/46 : Autor(es): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

5. New corrections factors for the quantification of fish represented in pellets of the blue-eyed shag Phalacrocorax atriceps

   necessary for the quantification of fish represented in pellets. These factors were obtained for Notothenia ... , Notolepis coatsi and Electrona antarctica were represented in pellets but not found in the stomach contents ... . Fish were the main prey and N. coriiceps and H. antarcticus were the dominant species both in mass and ... number. Observations on behaviour showed that the daily foraging trips per bird increased in number but ...

   Meeting Document : WG-EMM-95/83 : Autor(es): Silva, P., Casaux, R., Favero, M., Barrera-Oro, E.

6. Preliminary model of krill fishery behaviour in Subarea 48.1

   fishery in Subarea 48.1 and estimates the effort applied and the catch of krill in fine-scale squares ... March, compare favourably with the general distribution of catches in Subarea 48.1. A number of ... the management option of closing the zones around Livingston and Elephant Islands in alternate years ... would result in an average yearly catch similar to that at present, although the catch is much more ...

   Meeting Document : WG-KRILL-93/14 : Autor(es): D.J. Agnew (Secretariat)

7. Declining trend in the abundance of fjord fish of the species Notothenia rossii marmorata and Notothenia gibberifrons observed at two localities of South Shetland Islands

   Abstract:  A declining trend observed in the abundance of fjord fish of the species Notothenia ... nets at Potter Cove, King George/25 de Mayo I., from 1983 to 1990 and in waters around Half-Moon I ... ., Moon Bay, in 1989. The analysis was based on the proportion of catches of the mentioned species in ... relation to Notothenia neglecta, a species with similar ecological habits in the fjords. Comparison with ...

   Meeting Document : WG-FSA-90/14 : Autor(es): E. Barrera-Oro and E. Marschoff (Argentina)

8. Plastic ingestion by petrels breeding in Antarctica

   Abstract:  Plastic particles were found to be common pollutants in stomachs of Wilson’s Storm ... Petrels and Cape Petrels breeding on the Antarctic continent. Highest incidence of plastics was found in ... chicks of Wilson’s Storm Petrels that had died before fledging. Few or no plastics were found in Snow ... the Antarctic, and that relatively few plastics are available in Antarctic waters. Possible hazards of ...

   Meeting Document : CCAMLR-VIII/BG/09 : Autor(es): J.A. van Franeker (Netherlands) and P.J. Bell (Australia)

9. Towards the development of a stock assessment for Patagonian toothfish in Division 58.4.4, SSRU C on Ob and Lena Banks

   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 ... length in the catch, and recapture data from SSRU C from 2007/08 to 2011/12 were fitted in the model. The ...

   Meeting Document : WG-FSA-12/59 : Autor(es): K. Taki (Japan)

10. Further development of pairwise tag detection performance index and its application to the stock assessment of toothfish in the Ross Sea fishery

    Abstract:  Tag release and recapture data are used in integrated age-structured stock assessments ... of Antarctic toothfish (Dissostichus mawsoni) in Subareas 88.1 and 88.2 to determine abundance and ... ) could lead to an over-estimate of the stock biomass. In this paper we develop further an index of vessel ... subset of vessels for which  there is confidence in their tag-recapture data. Finally, we apply these ...

    Meeting Document : WG-SAM-13/34 : Autor(es): S. Mormede (New Zealand)

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