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1. Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data

   CCAMLR areas using integrated statistical catch-at-age stock assessment models. These models were ... model outputs of withholding from a stock assessment between one and eight years of age frequency and/or ... tag recapture data. Examining the impact of considering a subset of the available data simulates both ... the effect of not updating an assessment every year, and also the evolution of stock assessments with ...

   Meeting Document : WG-SAM-11/17 : Author(s): S. Mormede (New Zealand)

2. Development in maturity stage composition and vertical distribution in an Antarctic krill (Euphausia superba) hotspot

   of both male adult stages (MIIIA and MIIIB) increased, but at a lower rate. Overall, there was also a ... Abstract:  Antarctic krill (Euphausia superba) aggregate in various ways depending on a range of ... such as shelf edges and canyons, are considered as hotspots of high importance for regional pelagic ... ecosystems and also for the krill fishing industry. Despite the importance of such krill hotspots, their ...

   Meeting Document : WG-EMM-14/15 : Author(s): B.A. Krafft, G. Skaret and T. Knutsen (Norway)

3. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season

   Abstract:  We provide an update of the Bayesian sex and age structured population stock assessment ... ), using revised catch, catch-at-age, and tag-recapture data for the 2007 season. The updated reference ... model resulted in a slightly lower estimate of initial biomass than the 2006 base case. The inclusion of ... the 2007 recaptures of 2006 tags released had the most substantive impact on the model estimates ...

   Meeting Document : WG-FSA-07/37 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)

4. Information on illegal fishing in Statistical Area 58 assessment of illegal fishing in French waters around Kerguelen and Crozet Islands: report of observations and inspections in the CCAMLR area 2002/2010 season (1 July 2009 to 15 August 2010)

   observed on the more scattered seamounts (Ob and Lena), and sometimes at the boundary of the Kerguelen and ... Abstract:  Abstract This document summarises French observations of illegal fishing for the past ... year and reports on implementation of the CCAMLR Inspection System. It includes an analysis of ... throughout the whole year. It has proved to be effective, in that there is no longer any sign of IUU fishing ...

   Meeting Document : CCAMLR-XXIX/44 : Author(s): Delegation of France

5. Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?

   Abstract:  This paper is a revised version of WG-EMM-15/28, which uses a question and answer ... format to explain the management of the Antarctic krill (Euphausia superba) fishery in the subareas 48.1 ... to 48.4, and current knowledge about the state of the regional krill stock. The revisions provide a ... new, precautionary assessment of exploitation rate in this fishery. The effective regional catch limit ...

   Meeting Document : WG-EMM-16/21 : Author(s): S. Hill, A. Atkinson, C. Darby, S. Fielding, B. Krafft, O.R. Godø, G. Skaret, P. Trathan and J. Watkins

6. Revised reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in 2010/11 and proposal of the consecutive survey in 2011/12

   quarter – a half underestimated compared to those using GYM at WG-FSA in 2010 in case of Ob-Lena Bank, and ... of toothfish in the southeast sector (24 allocated hauls) of Division 58.4.3b (BANZARE Bank), using a ... made for 5 hauls. Total catch (excluding fish released alive) of Dissostichus spp. and other bycatch ... species was 12.0 ton in the SE sector, where the catch limit of 15 ton was set. Mean CPUE of Dissostichus ...

   Meeting Document : WG-FSA-11/13 Rev. 1 : Author(s): K. Taki, T. Iwami and M. Kiyota (Japan)

7. Results of the sixth Ross Sea shelf survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, January 2017

   Abstract:  At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... this paper we provide results of the sixth annual survey in the time series. The objectives of this ... survey included monitoring sub-adult (≤ 110 cm TL) toothfish in the south of SSRUs 881.J and 881.L in the ... larger (large sub-adult and adult) toothfish in two areas (both situated in SSRU 881.M) of importance to ...

   Meeting Document : WG-SAM-17/01 : Author(s): K. Large, L. Robinson and S. Parker

8. Spatial and seasonal distribution of adult Oithona similis in the Southern Ocean: predictions using boosted regression trees

   , with surface abundances 20% higher at night than during the day. There was no evidence of diel ... trees to derive relationships between environmental conditions and the distribution of the adult stage ... of the cyclopoid copepod Oithona similis in the Southern Ocean. Nearly 20 000 samples from the ... probability of detection (presence) and relative abundance of adults of this zooplankton species in surface ...

   Meeting Document : WG-EMM-10/P14 : Author(s): M.H. Pinkerton, A.N.H. Smith, B. Raymond, G.W. Hosie, B. Sharp, J.R. Leathwick and J.M. Bradford-Grieve

9. Catch removals due to killer and sperm whale interactions across sub-Antarctic fisheries

   investigated the extent of this conflict in multiple commercial Patagonian toothfish (Dissostichus eleginoides ... , and Heard Island and McDonald Islands (Indian sector of the Southern Ocean) fisheries, statistical ... . The results indicated that these removals were large, totalling more than 6,600 t of toothfish between ... 2009 and 2016 with an overall annual mean of 837 t [95% CI 480-1,195 t], comprised of 317 t [232-403t ...

   Meeting Document : WG-FSA-2019/33 : Author(s): P. Tixier, P. Burch, F. Massiot-Granier, P. Ziegler, D. Welsford, M.-A. Lea, M.A. Hindell, C. Guinet, S. Wotherspoon, N. Gasco, C. Péron, G. Duhamel, R. Arangio, R. Tascheri, S. Somhlaba and J.P.Y. Arnould

10. Korean research plan in Divisions 58.4.1 and 58.4.2 in 2016/17

    Abstract:  Most things related to Dissostichus spp. in the eastern side of Antarctic Ocean has not ... sizes were vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. During the 2004-2015 ... more recapture. The food-web of Dissostichus spp. has started to be studied in the southern Ross Sea ... and 58.4.1C. Some studies on biology of the fish have been evaluated, but those are not enough to ...

    Meeting Document : WG-SAM-16/17 : Author(s): Delegation of the Republic of Korea

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