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1. Alternative method of the age composition assessment on the basis of surveys length data using mixture distributions

   the hypothesis of non-zero observations lognormal distribution for a large number of length groups ... Mare commonly used by CCAMLR in icefish age composition of abundance indices determination. To solve ... comparison of this method and the method by de la Mare for length series, estimated with Aitchison’s method ... tested on the length series obtained with the bootstrap method on the basis of the above mentioned ...

   Meeting Document : WG-FSA-05/78 : Autor(es): P. Gasyukov (Russia)

2. Age Determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula Subarea (Subarea 48.1)

   cross sections proved to be the most reliable method. Mean length data at age presented here for Low I ... Abstract:  Age determination was carried out on Notothenia gibberifrons specimens collected at two ... from the difficulty to differentiate false from annual checks in scales. Age determination by otolith ... . specimens were compared with previous published values. This confirmed that fishes from the Antarctic ...

   Meeting Document : WG-FSA-88/15 : Autor(es): E. Barrera-Oro (Argentina)

3. MODELLING ANTARCTIC KRILL: SCALE, MOVEMENT AND AGE‐STRUCTURE

   Abstract:  The organization, example outputs, and future objectives of an integrated, age ... 's capabilities are illustrated using 19 years of survey data collected by the U.S. AMLR Program ... being developed in stages to incorporate different data sources. Model estimates are incremented for ... possible. Ages are converted to lengths based on a single age‐to‐length transition matrix. Currently the ...

   Meeting Document : WG-EMM-11/43 Rev. 1 : Autor(es): D. Kinzey, G. Watters and C. Reiss (USA)

4. Age, growth and size at sexual maturity of Macrourus carinatus from the CCAMLR fisheries in division 58.5.2

   Abstract:  Estimates of age and growth were determined from 156 Macrourus carinatus otolith ... 1993. The estimated range of ages was 4 – 25 years. von Bertalanffy growth parameters were calculated ... for both sexes combined, resulting in values of: L8 = 635 mm, K = 0.088 and t0 =-1.8. The size at ... was 417 mm total length and the size at which 50% of the fish population have spawned for the first ...

   Meeting Document : WG-FSA-02/48 : Autor(es): E.M. van Wijk, R. Williams and A.J. Constable (Australia)

5. Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate

   1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... -1972. Exponential models fitted to the frequency distribution of age-classes greater than age 5 years ... Abstract:  The age distribution of breeding female Antarctic fur seals at Bird Island, South ...

   Meeting Document : WG-CEMP-91/21 : Autor(es): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)

6. AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)

   . Age at sexual maturity was estimated to be about 2 years for females and 2.5 years for males. Compared ... estimated age range was 1-5 for males and 1-4 for females of C. wilsoni. Applying the von Bertalanffy growth ... function to the age-length data, a growth curve was obtained for each sex. The estimated values of VB ... consisted mainly of adult specimens between 1 and 3 years of age, with very few older fish. Author(s):  M ...

   Meeting Document : WG-FSA-08/33 : Autor(es): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)

7. Age and growth of Scotia Sea icefish Chaenocephalus aceratus (Lönnberg, 1906), from the South Shetland Islands

   from different institutions. The age range was 1-17 years for females and 1- 15 years for males. Von ... Bertalanffy growth curves were fitted to the estimated age-length data for each sex. The estimated values of ... asymptotic length L??(cm) and K (year-1) were respectively 79.8 and 0.07 for females and 60.0 and 0.09 for ... species. Overall, 357 specimens ranging from 13 and 67 cm (TL) were selected for the present study. Ages ...

   Meeting Document : WG-FSA-02/77 : Autor(es): M. La Mesa, J. Ashford, E. Larson and M. Vacchi

8. Preliminary studies on age and growth of Dissostichus eleginoides in the Ob-Lena Bank

   females. Five to eighteen years gave large contribution to the total age groups for both sexes. Females ... were estimated. The estimated ages ranged from 5 to 46 years for males and from 5 to 50 years for ... Abstract:  Preliminary studies on the age and growth of Dissostichus eleginoides sampled in the ... generally identified within the primordium and thus many of age counts were overestimated. We would recount ...

   Meeting Document : WG-FSA-10/48 : Autor(es): K. Taki, M. Kiyota and T. Ichii (Japan)

9. Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea

   maximum age was 14 years, but this should be regarded as a conservative estimate of longevity because of ... respectively) produced estimated ages at maturity of 6–7 years for males and 8–11 years for females. These ... , producing uncertain age estimates. Furthermore, annual deposition of thorn bands has not been validated. The ... provided for females, males, and both sexes combined. There was no obvious difference between the sexes, so ...

   Meeting Document : WG-FSA-04/29 : Autor(es): M.P. Francis and C. Ó Maolagáin (New Zealand)

10. The age structure and growth rate of Patagonian toothfish (Dissostichus eleginoides) at South Georgia

    . Evidence for the separation of early year classes is presented along with mean sizes for each age class ... Abstract:  New length-at – age data for South Georgia toothfish are presented from a range of ... . Age length keys indicate that fish enter the fishery at 7 years and are fully recruited at between 10 ... and 11 years. Author(s):  M. Belchier (United Kingdom) Title:  The age structure and growth rate of ...

    Meeting Document : WG-FSA-04/86 : Autor(es): M. Belchier (United Kingdom)

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