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1. Fishery Report: Dissostichus eleginoides and Dissostichus mawsoni South Sandwich Islands (Subarea 48.4)

   for which catch-at-age data was used based on ageing of a random sample of otoliths collected during ... the 2008/09 season. Size-at-age data were also included to inform estimates of von Bertalanffy parameters ... N). The inclusion of catch-at-age data required an additional fleet to be added to the model for the 2008/09 season ... , though using the same selectivity-at-age as that estimated for the catch fleet for 2004/05 to 2010/11 ...

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2. Fishery Report 2016: Champsocephalus gunnari Heard Island (Division 58.5.2)

   and a maximum age of 6 years. Size at first maturity for females is 26.5 cm and for males is 28.5 cm total ... of Champsocephalus gunnari in Division 58.5.2. Category Parameter Values Age structure Recruitment age 2 years ... Plus class accumulation 10 years Oldest age in initial structure 11 years Initial population ... Number of runs in simulation 1 Individual trial specifications Years to remove initial age ...

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3. Fishery Report: Closed fishery for Dissostichus spp. in Divisions 58.4.4a and 58.4.4b

   to WG-SAM for review by 2011 to 2012. 8 TOT 58.4.4 9 30. However, some members ... scientific information is gathered and reviewed by the Scientific Committee and WG-FSA ... . in Divisions 58.4.4a and 58.4.4b reported by SSRU (source: fine-scale data pro-rated by total reported catch ... 14 50 <1 0 50 <1 2000/01 MoR <1 80 <1 0 80 <1 2001/02 160 80 80 2002/03 closed closed ...

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4. Dissostichus eleginoides Heard Island (Division 58.5.2)

   population (ages 4, 5, 6 and 9; Figure 5.19). The 9-year-old cohort was not used to estimate ... Expected Density (n km–2) Survey year Area (km2) Age 3 Age 4 Age 5 Age 6 Age 7 Age ... in the age range 3 to 8 years used from other surveys (see WG-FSA-96/38). The 2000 survey was also excluded ... in Division 58.5.2. Based on a natural mortality of 0.165 yr–1. Year at age 4 birthday WG-FSA-04 ...

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5. Fishery Report: Champsocephalus gunnari (ANI) Heard Island (Division 58.5.2)

   . Cohorts were present in ages 1+ to 5+. As seen in 2011, four or five consecutive year classes ... 58.5.2. Category Parameter Values Age structure Plus class accumulation 10 years Oldest age ... in initial structure 11 years Initial population structure Age class density See Table 6 Weight ... to remove initial age structure 0** Specifications Year prior to projection 2011*** Reference start ...

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6. New Zealand: Review documents for the Antarctic toothfish stock assessment for the Ross Sea region (Subarea 88.1 and SSRUs 88.2A and B)

   New Zealand: Review documents for the Antarctic toothfish stock assessment for the Ross Sea region ... . · Observations (with assumed likelihood and error values) are 1) the annual fishery age frequency by sex ... age frequency by sex, and 4) the annual shelf survey biomass estimate. A catch-per-unit effort index ... model used for management purposes. Uses proportions at age, CPUE indices, and tagging data from NZ ... (removing up to 210-2013 observations) 2015 Add survey age frequencies and biomass estimates and estimate ...

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7. Fishery Report 2017: Champsocephalus gunnari Heard Island (Division 58.5.2)

   and a maximum age of 6 years. Size at first maturity for females is 26.5 cm and for males is 28.5 cm total ... Values Age structure Recruitment age 2 years Plus class accumulation 10 years Oldest age in initial ... structure 11 years Initial population structure Age-class density See Table A1.2 Weight-at-length Weight ... Years to remove initial age structure 12 Year prior to projection 20163 Reference start date ...

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8. Fishery Report: Champsocephalus gunnari Heard Island (Division 58.5.2)

   for C. gunnari, starting at 2.5 years and fully selected at age 3. Recruitment 15. The short-term projection ... Parameter Value Recruitment age Start 2.5 years Fully selected 3 years Plus class accumulation 10 ... years Oldest age in initial structure 10 years Maturity Lm50 0 mm*** Range: 0 to full maturity ... to remove initial age structure* 1 Year prior to projection** 2006 Reference start date 01/12 Years ...

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9. Fishery Report 2017: Dissostichus eleginoides and D. mawsoni South Sandwich Islands (Subarea 48.4)

   by-catch species, as well as collection of toothfish otoliths for age determination. 3 Length ... depth preferences with age, with juveniles living on the continental shelf and moving into deeper water ... or no ageing information at present. Consequently, the stock is assessed using a simple Chapman biomass ... . The stock of Patagonian toothfish (D. eleginoides) in Subarea 48.4 was assessed using an age-structured ...

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10. Fishery report: Champsocephalus gunnari Heard Island (Division 58.5.2)

    reviewed by the Working Group that C. gunnari has a low likelihood of reaching age 5, remain valid ... to age 3+ fish. It is evident that the very strong year class, present in the 2002 survey as juvenile ... was used for C. gunnari, starting at 2.5 years and fully selected at age 3. Recruitment 16. The short ... that the age-3+ cohort contributes to both the highest number and biomass of animals within the population ...

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