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1. Fishery Report: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2

   were selected for ageing each year, and used to construct annual area-specific ALKs. Age data were ... sex using otolith ages from all available years was used to construct annual age frequencies ... were 16.6 years and 133.2 cm and for the mean age- and length-at-50%-maturity for males were 12.8 ... ........................................................................ 8 Standardised CPUE ................................................................ 9 Catch-at-age ...

   Document : Site Section: Publications

2. Updated description of Patagonian toothfish (Dissostichus eleginoides) tagging and ageing programs in Division 58.5.2, 1997–2015

   . These samples have detected fish as old as 51 years, increasing the previous maximum age estimate of 42 years ... . These samples have detected fish as old as 51 years, increasing the previous maximum age estimate of 42 years ... to information on the structure of the population. The ageing program at AAD has produced an additional 2559 ... estimates of age, for fish captured during the 2014 and 2015 Random Stratified Trawl survey, commercial ...

   Meeting Document : WG-FSA-15/55 : Author(s): D.C. Welsford, B. Farmer, T.D. Lamb, C. Péron, E. Woodcock and P.E. Ziegler (Australia)

3. Australia: Relevant references for the Patagonian toothfish (Dissostichus eleginoides) stock assessment in Division 58.5.2

   catch-at-age data and two years of survey abundance-at-age data. Document WG-SAM-09/07, CCAMLR, Hobart ... . and G.B. Nowara (2006b). Review of the use of survey data and length-at-age models in the assessment ... P., Ziegler P.E., de la Mare W. and D.C. Welsford (2014) Investigating the uncertainty of age determinations ... S.G. (2007) Comparison of estimators of effective sample size for catch-at-age and catch-at-length ...

   Document : Site Section: Meetings

4. Summary of the toothfish fishery and tagging program in the Ross Sea region (Subarea 88.1 and SSRUs 882A–B) through 2017/18

   showed no trend over time in the shelf, slope or northern areas. Patterns in the age frequency ... over time in the shelf, slope or northern areas. Patterns in the age frequency of the catch showed ... the 2018 season. Despite 2018 being the first year of implementation of the Ross Sea region Marine ... recaptured in 2018 was similar to that recaptured in previous years, with some fish recaptured after 14 years ...

   Meeting Document : WG-FSA-18/46 : Author(s): S. Mormede and S. Parker

5. Revised joint research proposal for Dissostichus spp. in Subarea 88.3 by Korea and New Zealand

   was for an additional 3 years covering the period 2018, 2019 and 2020. It was designed to build on Korea’s previous ... was for an additional 3 years covering the period 2018, 2019 and 2020. It was designed to build on Korea&rsquo ...

   Meeting Document : WG-FSA-18/42 : Author(s): Delegations of the Republic of Korea and New Zealand

6. Continuation of multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22

   and to allow more time for review by Working Groups of major reporting and review years in non-stock-assessment ... years. Compared to last year (WG-FSA-18/59), this research plan has been updated with 2019/20 operating ... . 2017, Eléaume et al. 2018). Here, we update the research plan for 2018/19 to 2021/22 (WG-FSA-18/59 ... ), in accordance with ANNEX 24-01/A, Format 2. This plan has been designed as a 4-year plan, based on the low risk ...

   Meeting Document : WG-SAM-2019/05 : Author(s): Delegations of Australia, France, Japan, Republic of Korea and Spain

7. SC-CAMLR-VII

   on Antarctic Fish Age Determination (Moscow, USSR, 14–19 July, 1986) SC-CAMLR-VII/BG/42 Observer’s report from ... , Australia, 12–20 October, 1988) SC-CAMLR-VII/11 CCAMLR ad hoc Working Group on Krill. Summary of activities ... of the Siedlecki January 1987, South Shetland Island data set United States of America SC-CAMLR-VII/BG/20 Patterns ... (European Science Foundation, Member of the EPOS Management Group) SC-CAMLR-VII/BG/30 Target strengths ...

   Meeting

8. Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study

   Paper Title:  Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... function of sampling availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal ... reported measures of uncertainty associated with originally published counts are propagated through ... IntegratIng Count effort by SeaSonally CorreCtIng anImal PoPulatIon eStImateS (ICeSCaPe): a method ... Canada Abstract This work describes a parametric bootstrap model for standardising animal count data ... availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... measures of uncertainty associated with originally published counts are propagated through to the final ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Author(s): McKinlay, J., C. Southwell and R. Trebilco

9. Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf

   of the area. It is implied that part of tlne western group migrates towards Shag Rocks at the age of 2-3 years ... towards Shag Rocks at the age of 2-3 years. It has been found that, by number, recruits represent ... Paper Title:  Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes ... to determine the age-length composition of mackerel icefish (Champsocephalus gunnari) from different parts ... ) but more frequently at age 2+ (20-25 cm length). It should also be noted that some C. gunnnvi year ... dPcadas del 70 y 80. Keywords: C. glrirrinrr, length-age composition, juveniles, immature and mature ... split-year, which starts on 1 July. On this date fish age was increased by one year. RESULTS ... a maxi-mum in October. At that time a new generation of fish reaching 20-25 cm in length (age class ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Author(s): Frolkina, G.A

10. Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a

    catch-at-length/age data and tagging data at-length/age. A simple algorithm, based upon the Petersen ... are not available – namely catch-at-length/age data and tagging data at-length/age. A simple algorithm, based ... tagging levels that will produce an expected abundance estimate in the following year of a given precision ... in the following year of a given precision whilst ensuring the sustainable exploitation of the stock as per ... component is incorporating the recruitment uncertainty used in the age-structured model pro- jections ... . of 0.75), for M a value of 0.13 with a 10% CV, and for age-at-maturity a value of 13 years with again ... Assessment And tAg progrAm AdAption methods for explorAtory fisheries in the CAmlr Convention AreA ... into an integrated assessment framework when more detailed data are not available – namely catch-at-length/age data ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M

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