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1. A simple approach for calculating the potential yield of krill from biomass survey results

   for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... median pre-exploitation level over a 20 year period of harvesting should equal 10%. The value of, λ ... Paper Title:  A simple approach for calculating the potential yield of krill from biomass survey ... results Abstract / Description:  Estimates are calculated for the parameter λ in the yield equation Y = λ ... (A.2), for "years" y = 2 to 11. Thus, by "year" y = 10, all memory of the initial deterministic age ... "year") is accordingly: 7 Bsp(Y) = L wa Ny,a (A.5) a=am where am is the age-at-maturity for ... -first-capture, choose a value forA. (ii) For "year" y=l, set up deterministic equilibrium age ... 0.2 occurs during the 20 year harvesting period. (x) Repeat steps (ii» to (ix) for different values ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Auteur(s): Butterworth, D.S., A.E. Punt and M. Basson

2. Fishery Report 2017: Exploratory fishery for Dissostichus eleginoides in Division 58.4.3a

   Description / Abstract:  Fishery Report 2017: Exploratory fishery for Dissostichus eleginoides in ... ) in each year are provided. Note: length-frequency distributions are only presented for those years ... was an exploratory fishery for Dissostichus spp., however, in order to better align the target ... Japanese-flagged vessel using longlines, one French vessel fished. 2 5. For 2018, one vessel ... , biomass estimation phase and assessment development phase, with a set of decisions and review for the ...

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3. Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region

   Paper Title:  Spatially explicit population dynamics models for Antarctic toothfish in the Ross ... dynamics of spatial heterogeneity of the population along with age structure, movement and reproductive ... stage transition in a holistic framework. Using this software, three spatially explicit age-structured ... models were developed for the Antarctic toothfish (Dissostichus mawsoni) population in the Ross Sea ... to fitting them in the model) were assumed at an effective sample size of 30 for catch-at-age ... 5 10 15 20 25 30 Age (years) 1.0 0.8 ... (i,j) for category k at age l at the end of the 100th year of the second initialisation phase, and ... rate of 1 All age by one year (30+ remain 30+) 1 - - - Total 16 processes 34 Mormede et al ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Auteur(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker

4. A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity

   catches made. An MP with control parameter values specified is proposed for implementation based on the ... results of the trials. Given the importance of an adequate catch rate for the economic viability of the ... Paper Title:  A proposed management procedure for the toothfish (Dissostichus eleginoides ... ‘Optimistic’, ‘Intermediate’, ‘Less Pessimistic’ and a ‘Pessimistic’ current status for the resource are ... following proce- dure: 1. Numbers-at-age ( ',y aN ) for the start of the year in which projections ... Bsp over the 20-year pro- jection period falling below 50% of Ksp is zero for the Optimistic and the ... numbers-at-age for year y’ are projected forward under a true catch given by the sum of TACy’ (the legal ... 20-year projec- tion period is zero under all OMs except for the Pessimistic one for which it is ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 33–69 : Auteur(s): Brandão, A. and D.S. Butterworth

5. Fishery Report 2017: Closed fishery for Dissostichus spp. in Divisions 58.4.4a and 58.4.4b

   Description / Abstract:  Fishery Report 2017: Closed fishery for Dissostichus spp. in Divisions ... 2004 (Table 1). In 2010, the last year in which IUU catch was recorded, an estimated 80 tonnes was ... , which was below the research catch limit set for that year (Table 1). 5. From 2008 to 2016, a single ... developed a framework for designing and undertaking research fishing designed to lead to an assessment of ... development phase, with a set of decisions and review for the progression between stages. 10. In order to ...

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6. Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea

   Paper Title:  Options for allocating the precautionary catch limit of krill among small-scale ... management units in the Scotia Sea Abstract / Description:  Following an assessment of Antarctic krill ... catch limit for krill among the SSMUs so as to preclude the inadvertent concentration of catches in a ... small portion of the surveyed area. Five options for allocating the catch limit among the SSMUs in the ... 3 0 20 40 60 80 100 Krill biomass density (g m-2) A 1 st an d ar d d ev ia te y ... R2 = 0.1163 -3 -2 -1 0 1 2 3 0 20 40 60 80 100 Krill biomass density (g m-2) A 2 st an d ... standing stock less predator demand for an SSMU is less than zero, then no catch limit would be allowed ... SSMU may change from year to year and that an index may have some predictive value in estimating ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Auteur(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins

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

   882CDFG 214 216 34 20 50 0 80 2 882E 361 350 58 30 50 0 20 11 * Note: Includes skates landed, and ... for each year to produce catch-at-age distributions (WG-FSA-09/36). In SSRU 882E, otoliths were only ... single ALK for each sex using otolith ages from all available years was used to construct annual age ... years and 133.2 cm and for the mean age- and length-at-50%-maturity for males were 12.8 years and 120.4 ...

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

   S.G. Candy (2007) an assessment strategy evaluation framework for testing the Application of a CASAL ... . CCAMLR Science 11:59-80. Candy S.G. (2006) Estimating fishing gear selectivity for trawlers using length ... S.G. (2007) Comparison of estimators of effective sample size for catch-at-age and catch-at-length ... , Hobart, Australia. Candy S.G. (2008) Estimation of effective sample size for catch-at-age and catch-at ...

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9. Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)

   Paper Title:  Standardization of fishing effort for Champsocephalus gunnari in the South Georgia ... inflexible in its use of data types and has no estimate of accuracy. A standardized CPUE index for ... the values selected to standardize the model. The mean coefficient of variation for the CPUE values ... was 0.399. File:  20-Gasiukov.pdf ... WG-FSA-90/27 STANDARDIZATION OF FISHING EFFORT FOR ... certain year. A standardized value for catch-per-effort for a given type of category is calculated by ... for the C. gunnari fishery for the period from 1981/82 to 1989/90 are represented in Tables 1 to 3 ... of the multiplicative model for fishing effort standardization in a special case. NAFO SCRDoc. 90/50 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Auteur(s): Gasiukov, P.S.

10. A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty

    known catch history and thus allow assessments of yield to be made for existing fisheries. An example is ... Paper Title:  A generalised model for evaluating yield and the long-term status of fish stocks ... projection model for assessing the long-term annual yield which satisfies objectives for the maintenance of ... biomass. The model provides a flexible method for assessing the influence of different patterns of growth ... of growth during the year); an age-selectivity function, a(a) (allows for a fishery that targets ... ) 1.21 I 0 10 20 30 40 50 60 Length (mm) Selectivity (b) 1.6 1 1 0 2 4 6 Age (years) Relative ... against age and time of year, is a convenient method for incorporating Monte-Carlo integration over the ... T = a -t- t, for fish of age a at time of year t. The growth function covers the entire lifespan of ...

    Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Auteur(s): Constable, A. and W.K. de la Mare

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