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1. Preliminary tag-recapture based population assessment of Antarctic toothfish in Subarea 48.4

   Abstract:  The stock of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 was conservatively ... would imply a 2016/17 yield of 40.6 tonnes compared to the 2015/16 TAC of 39 tonnes. Author(s):  S ... of Antarctic toothfish in Subarea 48.4 Approval:  Approved Secretariat Workflow Status:  Content ...

   Meeting Document : WG-FSA-16/39 : Author(s): S. Wright, N. Walker, M. Söffker and T. Earl

2. Preliminary assessment of mackerel icefish Champsocephalus gunnari in Subarea 48.3 based on the 2017 groundfish survey

   Abstract:  A stratified bootstrap of icefish catch density based on the UK 2017 demersal fish ... survey catch rate data indicated a biomass of 91 531 tonnes (lower one sided 5th percentile: 47 424 ... CCAMLR harvest control rule lead to catch limits (TAC) of 4 733 tonnes for 2017/18 and 3 269 tonnes for ... 2018/19. Author(s):  T. Earl Title:  Preliminary assessment of mackerel icefish Champsocephalus gunnari ...

   Meeting Document : WG-FSA-17/47 : Author(s): T. Earl

3. A new method to produce high resolution maps of effort and catches in longline fisheries

   Abstract:  Fishing vessels using ~10 km long bottom longline operate in the French EEZ of ... a new method to better take into account the information associated to the path of the line instead ... of only the mid-point as commonly used to calculate catch rates. Author(s):  N. Gasco, C. Péron, C ... . Chazeau, A. Martin, P. Pruvost and G. Duhamel Title:  A new method to produce high resolution maps of ...

   Meeting Document : WG-FSA-18/43 : Author(s): N. Gasco, C. Péron, C. Chazeau, A. Martin, P. Pruvost and G. Duhamel

4. Preliminary assessment of mackerel icefish Champsocephalus gunnari in Subarea 48.3 – Based on the 2019 Groundfish Survey

   Abstract:  A stratified bootstrap of icefish catch density based on the UK 2019 demersal fish ... survey catch rate data indicated a biomass of 53,124 tonnes (lower one sided 5th percentile: 32,399 ... CCAMLR harvest control rule lead to catch limits (TAC) of 3,225 tonnes for 2019/20 and 2,132 tonnes for ... 2020/21. Author(s):  T. Earl Title:  Preliminary assessment of mackerel icefish Champsocephalus gunnari ...

   Meeting Document : WG-FSA-2019/30 : Author(s): T. Earl

5. Report of the Ninth Antarctic Treaty Consultative Meeting

   -83 Rev2 Part 1 of 2 ANT-IX-83 Rev2 Part 2 of 2 ...

   Document : Site Section: The Organisation

6. Using carapace measurements to determine the sex of Antarctic krill (Euphausia superba)

   validating the use of discriminant functions to determine sex of krill based on carapace length and width and ... derived from mature krill in years following significant recruitment events with large proportions of ... immature krill resulted in significant bias towards male krill and an overestimation of krill length. We ... measurements to determine the sex of Antarctic krill (Euphausia superba) Approval:  Approved ...

   Meeting Document : WG-EMM-05/26 : Author(s): J.D. Lipsky, M.E. Goebel, C.S. Reiss and V. Loeb (USA)

7. Demography of Antarctic krill in the Lazarev Sea (Subarea 48.6) and the Elephant Island area (Subarea 48.1) in 2004

   after taking substantial day/night differences in the catches into account. Recruitment indices of one ... and high, but different values for R2. Spatial distribution of krill density and size/age classes is ... discussed for the Lazarev Sea. Information are given on the development of maturity stages and “re ... -juvenation processes” after the spawning season. Distribution and density of krill calyptopis and furcilia ...

   Meeting Document : WG-EMM-04/23 : Author(s): V. Siegel (Germany), V. Loeb (USA), B. Bergström (Sweden), S. Schöling (Germany), M. Haraldsson (Sweden), J. Kitchener (Australia), M. Vortkamp (Germany)

8. Simulating performance of trend analysis for setting catch limits in exploratory toothfish research plans

   qualitative analysis of trends in biomass estimated in each research block and a series of simple decision ... developed and tested as a matter of priority for WG-SAM-18. We formalised and codified the rules and ... developed a simulation approach to examine the performance of the trend analysis rules for scenarios with ... and S. Mormede Title:  Simulating performance of trend analysis for setting catch limits in ...

   Meeting Document : WG-SAM-18/23 : Author(s): S. Hoyle, S. Parker, A. Dunn and S. Mormede

9. Biomass estimates of Antarctic krill based on survey conducted by the Chinese fishing vessel FV Fu Rong Hai during the 2019 Area 48 survey

   survey of Area 48 (2019 Area 48 survey), the Chinese krill fishing vessel F/V Fu Rong Hai conducted the ... 10 th February 2019. Implementation and preliminary results on the estimates of krill biomass density ... shown that mean krill biomass density was 80.7 g m-2 with a CV of 13.6% in the survey area. However, the ... krill biomass estimates might be updated pending on the outcome of krill length clustering analysis and ...

   Meeting Document : SG-ASAM-2019/07 : Author(s): X. Wang, X. Yu, X. Zhao, J. Zhang, G. Fan, J. Zhu and Y. Ying

10. Comparison of krill density estimated with swarm-based and dB-difference method using acoustic data collected by Chinese fishing vessel participating in the 2019 Area 48 survey

    Abstract:  To address the effect of various identification methods on krill biomass estimates ... vessel F/V Fu Rong Hai during the 2019 Area 48 survey. Identification window of swarm-based template were ... ). Identification window of dB-difference method were set to [2 16] and [0.4 12] respectively. Distributions of ... conclusion. Author(s):  X. Yu, X. Wang, J. Zhang and X. Zhao Title:  Comparison of krill density estimated ...

    Meeting Document : SG-ASAM-2019/06 : Author(s): X. Yu, X. Wang, J. Zhang and X. Zhao

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