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1. 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 : Autor(es): S.J. Parker (New Zealand), A.F. Petrov (Russia), C.P. Sutton (New Zealand) and E.N. Kuznetsova (Russia)

2. 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 : Autor(es): Thomson, R.B., Butterworth, D.S.

3. 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 : Autor(es): P. Gasyukov (Russia), K.-H. Kock (Germany) and Zh.A. Frolkina (Russia)

4. 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 : Autor(es): G. Parkes (United Kingdom)

5. 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 : Autor(es): F. Schaafsma, C. David, E. Pakhomov, B. Hunt, B. Lange, H. Flores, J.A. van Franeker

6. 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 : Autor(es): T.B. Linkowski and R. Traczyk (Poland)

7. Krill length and age at maturity

   identical for krill. Comparisons with length at age data show that females mature in the third year of the ... calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 ... life cycle (age class 2 +), while males reach maturity in the fourth year as age class 3 +. Both sexes ... mm for female krill are the best estimates for the high spawning season. Males attain sexual maturity ...

   Meeting Document : WG-KRILL-93/40 : Autor(es): V. Siegel (Germany) and V. Loeb (USA)

8. Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) (2013-14 season) from Division 58.4.1 by Spain

   Abstract:  We present preliminary results on age and growth of Dissostichus mawsoni for the second ... parameters obtained using length-age pair values are: L ∞: 175.7, k: 0.1078 and t 0: 1.528 for females; L ... season (2013/14) of the Spanish research fishing in the 58.4.1 Division obtained for growth rings on ... otolith readings. It is included the age-length key and growth parameters estimates by sex. Growth ...

   Meeting Document : WG-FSA-16/58 : Autor(es): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro

9. Contribution to knowledge on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1

   Abstract:  A summary of progress made regarding the ageing and growth studies for Dissostichus ... and the interpretation criteria applied on age estimation, as well as the age-length key and growth ... parameters estimates by sex. Growth parameters obtained using length-age pair values are: L ∞: 154.4, k ... : 0.1399 and t 0: 1.321 for males; L ∞: 166.6, k: 0.1322 and t 0: 1.571 for females; and L ∞: 168.2, k ...

   Meeting Document : WG-FSA-15/06 : Autor(es): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro (Spain)

10. Spatial distribution of Champsocephalus gunnari size and age are related with depth

    detect associations between the sizes of Champsocephalus gunnari (also age classes), Gobionotothen ... eleginoides and depth of catch, as well as among C. gunnari age classes. Except D. eleginoides median sizes of ... . rossii and negatively for the remaining species. Less association with depth is observed in C. gunnari as ... catches of age I- present maximum difference with the older age classes at about 150 meters a result which ...

    Meeting Document : WG-FSA-97/45 : Autor(es): Marschoff, E.R., Serra, J.A., Gonzalez, B., Calcagno, J.

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