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1. Summary of holdings of Patagonian toothfish (Dissostichus eleginoides) otoliths and size-at-age estimates from Heard and McDonald Islands (Division 58.5.2)

   currently used in the assessment to predict growth and assign length-at-age to catch-at age, however an ... season age-length keys for these fisheries impossible. It is likely that sufficient otoliths have been ... has yielded data which has assisted with understanding age structure and growth rates of toothfish in ... individuals which have been processed by the Central Ageing Facility to provide size-at-age estimates. Over ...

   Meeting Document : WG-FSA-07/45 : Автор(ы): D.C. Welsford and G.B. Nowara (Australia)

2. LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA

   Abstract:  This study uses a histological assessment of age and length at spawning for female and ... that primary endogenous growth can occur for an extended period with oocytes accumulating at the ... remnants of previous spawning) yielded similar results. The age at 50% spawning for females on the Ross Sea ... slope with the age distribution in the northern area and the lack of evidence for skip spawning in the ...

   Meeting Document : WG-FSA-09/37 : Автор(ы): S.J. Parker and P.J. Grimes (New Zealand)

3. Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries

   catch at age data remains a high priority for toothfish fisheries. A costing breakdown for otolith ... these fisheries. The inclusion of catch at age data is shown to substantially improve the precision of ... in developing an ageing program. Author(s):  D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J ... . Hutchins Title:  Robust characterisation of the age structure, growth and recruitment of toothfish in the ...

   Meeting Document : WG-FSA-12/P07 : Автор(ы): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins

4. Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 by Australia and Spain

   -age pair values had been estimated for every season.   An intersessional exchange of 40 “bake and ... and 2017 respectively, in order to get data and biological samples which enable an assessment of ... T. Barnes Title:  Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus ... responsibility for releasing documents:  Spain ...

   Meeting Document : WG-FSA-18/54 Rev. 1 : Автор(ы): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde, S. Barreiro, B. Farmer and T. Barnes

5. Comparison of age readings by two otolith preparation techniques and readers

   between fish ageing programmes. The criteria for determining similar age interpretation used here (mean ... ” techniques were used to prepare otoliths and each were read by an experienced reader from each program. The ... paired age difference statistically equal to zero, overall CV less than 10%, and slope of regression ... across ages equal to 1) were useful diagnostics in interpreting age comparisons. Author(s):  S.J. Parker ...

   Meeting Document : WG-FSA-14/53 : Автор(ы): S.J. Parker (New Zealand), A.F. Petrov (Russia), C.P. Sutton (New Zealand) and E.N. Kuznetsova (Russia)

6. Can the length composition of krill in predator diets provide information on the age-dependence of krill natural mortality?

   schedule of krill natural mortality at age. In principle, such a method would allow inferences about this ... predator abundance and food consumption studies. Some results of the method are put forward purely for ... inputs required by such an approach are required before it is taken further. Author(s):  Thomson, R.B ... ., Butterworth, D.S. Title:  Can the length composition of krill in predator diets provide information on the age ...

   Meeting Document : WG-EMM-95/40 : Автор(ы): Thomson, R.B., Butterworth, D.S.

7. A comparison of two different methods to age mackerel icefish (Champsocephalus gunnari) at South Georgia

   the two methods were revealed. A number of suggestions including an Age Determination Worksop to be ... Abstract:  Age determinations estimated by means of otoliths and age classes derived from CMIX ... four Russian surveys in 1988, 1990, 2000 and 2002. Considerable differences in age estimates between ... Zh.A. Frolkina (Russia) Title:  A comparison of two different methods to age mackerel icefish ...

   Meeting Document : WG-FSA-04/70 : Автор(ы): P. Gasyukov (Russia), K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)

8. Representative length and age distributions from random stratified demersal fish surveys

   Abstract:  Two similar methods for preparing aggregate length frequency distributions from survey ... data are discussed. The Mackerel Icefish, Champsocephalus gunnari at South Georgia is used as an ... example. Author(s):  G. Parkes (United Kingdom) Title:  Representative length and age distributions from ...

   Meeting Document : WG-FSA-91/19 : Автор(ы): G. Parkes (United Kingdom)

9. Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring

   that were <1 year old (age class 0; AC0), and that it was comprised of multiple cohorts. Size per ... 's energy demand and swimming capacity increase with size and age. The degree of sea ice ... association will have an effect on large-scale distribution patterns of AC0 krill and on predictions of the ... , B. Hunt, B. Lange, H. Flores, J.A. van Franeker Title:  Size and stage composition of age class 0 ...

   Meeting Document : WG-EMM-16/P16 : Автор(ы): F. Schaafsma, C. David, E. Pakhomov, B. Hunt, B. Lange, H. Flores, J.A. van Franeker

10. Age and Growth of Pseudochaenichthys georgianus Norman, 1937 (Channichthyidae) from the South Georgia Area

    applied to find a model for the age estimation from measurable fish and otolith parameters. The following ... Abstract:  Age was determined on the basis of growth microincrements in otoltihs. A calibration ... otolith sections and/or acetate replicas. Age ranged from 138 to 2116 days. A multiple regression was ... formula was obtained: Age (days) = 131.24 + 27416.4*Otolith weight (mg) Using this equation the age of 237 ...

    Meeting Document : WG-FSA-88/21 : Автор(ы): T.B. Linkowski and R. Traczyk (Poland)

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