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1. Simulations to evaluate model performance for Antarctic toothfish stock assessment in the Amundsen Sea region

   . Simulations suggest that the current research plan with the current levels of catch and tagging rate is likely ... shown promising results to date, with 8 interseason tags recaptured in the South area in 2016 and 12 ... models showed that using two independent models lead to higher estimates of biomass in the North and ... lower estimates of biomass in the South, but that the two independent models fitted the data poorly ...

   Meeting Document : WG-SAM-17/40 : Автор(ы): S. Mormede and S. Parker

2. Beach debris survey Signy Island, South Orkney Islands, 1998/99

   from beaches at Signy may be partly to do with their longevity in the marine environment. The increase ... increased effort to ensure that vessels are aware of, and comply with, regulations prohibiting the disposal ... that 40% had come from ships or fishing vessels in the form of packaging bands, fishing net and foam ... packing material. The last accounted for 58% of items small enough to be ingested by seals and seabirds ...

   Meeting Document : CCAMLR-XVIII/BG/7 : Автор(ы): Delegation of the United Kingdom

3. DEVELOPMENT OF A SPATIALLY EXPLICIT AGE-STRUCTURED STATISTICAL CATCH-AT-AGE POPULATION DYNAMICS MODEL FOR MODELLING MOVEMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA

   for MCMC that could be investigated. And, in order to address the questions of the adequacy of the ... maturity state spatial movement model. SPM is an aggregate movement model suitable for use with large ... numbers of areas, and is implemented as a discrete time-step state-space model that represents a cohort ... product of a set of preference functions that are based on known attributes of spatial location. SPM was ...

   Meeting Document : WG-SAM-08/14 : Автор(ы): A. Dunn and S. Rasmussen (New Zealand)

4. A two-fleet ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   annual legal catch not to exceed 500 tonnes for the time being, together with encouragement that this be ... yields may be possible, it is suggested that a prudent management approach at this stage would be for the ... Butterworth (2004) that permitted annual fluctuations about a deterministic stock-recruitment relationship is ... updated to take account of further catch, GLM standardised CPUE and catch-at- length information that has ...

   Meeting Document : WG-FSA-05/58 : Автор(ы): A. Brandão and D.S. Butterworth (South Africa)

5. 2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   % of its average pre-exploitation level in terms of spawning biomass. It is suggested that it would be ... to be taken by pots (which avoid the cetacean predation associated with longlining). Specific issues ... Butterworth (2005) that permitted annual fluctuations about a deterministic stock-recruitment relationship is ... updated to take account of further catch, GLM standardised CPUE and catch-at-length information that has ...

   Meeting Document : WG-FSA-06/58 : Автор(ы): A. Brandão and D.S. Butterworth (South Africa)

6. Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)

   fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ... index the relative abundance of grenadiers and be useful for exploring spatial distribution. Automated ... . These methods can be applied to large volumes of relatively low quality, opportunistically collected ... at seabed depths of 700–1000 m, and revealed consistent spatial patterns, with higher numbers of ...

   Meeting Document : WG-FSA-14/62 : Автор(ы): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)

7. The Secretariat review of the Strategic Plan, associated activities and outcomes

   Abstract:  At CCAMLR-XXIX, the Commission recommended that a staffing and salary strategy be ... -EMM with a brief description of the process that has been supported since CCAMLR-XXIX to address these ... included in the review of the Secretariat’s Strategic Plan and that SCAF consider the outcomes of that ... Scientific Committee (SC-CAMLR-XXIX, paragraph 14.2) that a review of the Secretariat’s data management ...

   Meeting Document : WG-EMM-11/09 : Автор(ы): Secretariat

8. A study of Patagonian toothfish (Dissostichus eleginoides) post tagging survivorship in Subarea 48.3

   survivorship. There are indications that survivorship rates may be lower while observers are learning how to ... , and then were kept in tanks with varying degrees of seawater replacement for at least 12 hours after ... tagging. On one vessel fish with a variety of injuries were selected to see if this affected recovery. 395 ... animals were included in the final analysis, with an overall survivorship of 89%. There were significant ...

   Meeting Document : WG-FSA-05/19 : Автор(ы): D. J. Agnew, J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones (United Kingdom), G. Breedt, S. Du Plessis, J. Van Heerdon (South Africa) and G. Moreno (Spain)

9. Orientation of Antarctic krill in an aquarium

   Abstract:  Acoustic methods appear to be the best way to estimate Antarctic krill abundance ... strength (TS) values, since TS varies with body orientation. Krill body orientation was measured in an ... slightly less than that when animals were hovering, 49.7° (SD=7.5°, N=50). Such an acute angle of elevation ... . Although mature females with marked swelling of the cephalothorax were not included in the experiment, the ...

   Meeting Document : WG-KRILL-93/24 : Автор(ы): Y. Endo (Japan)

10. Assessment models for Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H for the years 2002–03 to 2012–13

    is 266 t. We also recommend that further ageing is carried out by fishing members involved in the ... tagging protocols and data collection. We believe that there is sufficient conflicting information, and ... favour of the tag data as the base case. We therefore recommend that model R4 is used for providing ... management advice. In this model, the initial stock biomass is estimated at 6590 t (95% confidence interval ...

    Meeting Document : WG-FSA-13/52 : Автор(ы): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

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