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1. Integration of CPUE data into assessments using the Generalised Yield Model

   / Description:  For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has ... the use of importance sampling, for incorporating information on trends in standardised CPUEs into GYM ... assessments. The use of the method is illustrated using data for Patagonian toothfish (Dissostichus ... year Y is the latest year for which we have data from the fishery, and simulation years Y+l to Y+P ... , the GYM is a general age-str~~ctured fish stock projection model for assessing the long-term annual ... in the projections by drawing the estimates for an individual trial from the distributions provided ... abunda~lce of the stock in a given year for each trial is provided in output tables. In tlie absence of ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Auteur(s): Kirkwood, G.P. and A.J. Constable

2. RECRUITMENT AND BODY SIZE IN RELATION TO TEMPERATURE IN JUVENILE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) AT SOUTH GEORGIA

   , South Atlantic. Data from 13 demersal trawl surveys conducted over a 20-year period were analysed ... forecasts of years of good or poor recruitment for the toothfish fishery at South Georgia Author(s):  M ... mirrored those previously observed in a range of krill-dependent land-based predators at South Georgia for ... understanding of recruitment variability holds great interest for fisheries managers and could be used refine ...

   Meeting Document : WG-FSA-08/P02 : Auteur(s): M. Belchier and M.A. Collins

3. Monitoring Antarctic toothfish (D. mawsoni) recruitment in the southern Ross Sea

   the appearance of a second strong year class in 2016. Although the changes in age frequency were ... variability, and recruitment autocorrelation for an Antarctic toothfish stock. The continuation of the time ... recruitment variability, are key inputs for integrated assessments of fish stocks. A quantitative longline ... was started in 2012. The first year established the feasibility of carrying out a random stratified ...

   Meeting Document : WG-FSA-17/57 : Auteur(s): S.M. Hanchet, S. Mormede, S. Parker, K. Large, A. Dunn and B. Sharp

4. Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001

   . Analyses of the data at the beginning of each summer season could enable us to evaluate the potential for ... conducting a krill fishery in the area during the entire year. The reliability of these forecasts could be ... considerable decrease in mean SST off South Georgia. This observation is especially obvious for the northern ... up to +0.71°C in 1990/91, whereas it was-1.2°C in 2000/01 (for the 1999/2000 season the SST anomaly ... the entire year. The reliability of forecasts for krill catches based on hydrological information ... Georgia waters (Subarea 48.3) for December–February of 1989–1991 and 1999–2001. Year Month Cell 1 Cell ... could be verifi ed only by comparing forecasts with actual krill catches for a number of years. The ... 11 vanyushin PROOF for pdf.indd CCAMLR Science, Vol ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Auteur(s): Vanyushin, G.P

5. Analysis of seamount-specific catch and tagging data in the Amundsen Sea, SSRU 88.2H

   liberty for less than 2 years, and that data from the Amundsen Sea slope SSRUs (88.2C–G) are included in ... Abstract:  Catch, effort, and mark-recapture data for Antarctic toothfish from individual seamount ... areas. These metrics were also calculated for SSRU 88.2H as a whole. The analyses indicate that: Fish ... the stock assessment along with 88.2H. Fishing has occurred on almost every seamount in every year ...

   Meeting Document : WG-SAM-14/27 : Auteur(s): S.J. Parker (New Zealand)

6. Population assessment of Patagonian toothfish in Subarea 48.4

   addition of catch at age information for 2011, a minor change to the initial parameters of the selection ... Abstract:  This paper presents an update of the assessment of toothfish (Dissostichus spp.) in ... D. eleginoides in the northern region and a simple Petersen biomass estimate derived for D ... pattern and the inclusion of additional information on size at age. CASAL estimates of stock size, harvest ...

   Meeting Document : WG-FSA-12/36 : Auteur(s): R. Scott (United Kingdom)

7. Krill fishing in the Scotia Sea in relation to bathymetry, including the detailed distribution around South Georgia

   interannual variability in the distribution of trawls. The data for 1993 were only available from August but ... the fishery was restricted in that period to an area on the western edge of the shelf break where ... fishing for harvesting to be managed using an ecosystem approach. To this end it would be valuable to ... restricted area of about 30 x 20 km. There were also a few isolated hauls made outside this area. During ... factors determine variability within and between years. This will be particularly important for ... interannual variability in the distribution of trawls. The data for 1993 were only available from August but ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 1–17 : Auteur(s): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt

8. Revisiting krill ageing method using eyestalk cuticles

   Abstract:  The development of a consistent and reproducible ageing method for krill is critical ... for improving the precautionary management of krill fisheries. The only method to date that has shown ... promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ... an inter-laboratory calibration should be undertaken as a community effort supported by CCAMLR, in a ...

   Meeting Document : WG-EMM-2019/45 : Auteur(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda

9. Measurements of sound-speed and density contrasts of Antarctic krill (Euphausia superba) on board RV Kaiyo Maru

   an acoustical scattering model, information on size, morphology, orientation, sound–speed and mass ... -density contrasts between the animal and the surrounding water are required. Sound-speed and mass-density ...

   Meeting Document : WG-EMM-08/56 Rev. 1 : Auteur(s): Y. Takao, H. Yasuma, R. Matsukura, K. Amakasu and M. Naganobu (Japan)

10. Vast assembly of vocal marine mammals from diverse species on fish spawning ground

    Abstract:  This published paper utilizes data from an acoustic low frequency system to collect ... swimbladdered fish and exploits their resonance frequency for sizing and identification purposes. To become ... suitable for krill and whale interaction we might need to increase the frequency range. However, the ... Secretariat Workflow Status:  Content Approved Delegation responsibility for releasing documents:  Norway ...

    Meeting Document : WG-EMM-16/P01 : Auteur(s): D. Wang, H. Garcia, W. Huang, D.D. Tran, A.D. Jain, D.H. Yi, Z. Gong, J.M. Jech, O.R. Godø, N.C. Makris and P. Ratilal

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