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1. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   developmental stage in each histological section was recorded along with the mean maxi- mum viable oocyte ... diameter (mean of five largest oocytes (West, 1990)). Spawning status in the previous winter ... from the LPN stage takes two years, a continuous supply of CA-stage cells means spawning could occur ... - tribution for spawning fish. This was plotted along with the mean age-frequency distribution ... Paper Title:  Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the ... least a 6–12 month period, resulting in a developed group of oocytes accumulating at the final ... northern Ross Sea region depends on the proportion of the total population occurring in the northern Ross ... -at-spawning for female and male Antarctic toothfish (Dissostichus mawsoni) from fish sampled in the ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Author(s): Parker, S.J. and P.J. Grimes

2. A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia

   considerably lower, leading to a more conservative management strategy. However the loss of wholesale value ... mean; z, is the effect of the ith level of the factor reading; bi is the effect of the jth level ... 0, and random error E,,,, were assumed to be independent, normally distributed random errors with mean ... significant using the conventional F-test, the individual means were tested using the Tukey Honestly ... Paper Title:  A comparison between otoliths and scales for use in estimating the age of ... the two readers in estimating the age of D. eleginoides using otoliths and scales. File:  05ashford ... understanding the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Author(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson

3. Operational difficulties in exploratory fisheries

   Conservation Measures and regulations on Exploratory Fishery, and the actual on-site condition that limits ... Conservation Measures and regulations on Exploratory Fishery, and the actual on-site condition that limits ...

   Meeting Document : WG-SAM-13/22 : Author(s): N. Miyagawa, J. Okamoto, N. Akimoto and K. Hirose (Japan)

4. Summer distribution, abundance and structure of krill populations (Euphausia superba and Euphausia crystallorophias) sampled by plankton net in the western Ross Sea (January–February 2000)

   oblique tow. Mean relative biomass of Antarctic krill Euphausia superba, in the area north of Continental ... Shelf, was 9.4 (±18%) g/l000m3 of filtered water with a mean density of 11.0 (±16%) indviduals per ... in dominance in the High Antarctic Zone (south of 74°), with a mean relative biomass of 3.0 (±26%) g/l000m3 ... and mean density of 16.8 (±10%) individuals per 1000m3. The present data have demonstrated that in the Ross ...

   Meeting Document : WG-EMM-00/38 : Author(s): M. Azzali, A. Sala and G. Brancato (Italy)

5. Variation in the distribution of Antarctic krill Euphausia superba around South Georgia

   types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ... probably 3+ and older (mean size 49.5 mm); cluster 4 and 5 were small krill, mostly year 1 + either ... with or without some older size classes (mean sizes 27.2 and 24.5 mm respectively). Principle components analysis ...

   Meeting Document : WG-EMM-97/47 : Author(s): Daly, H.I., Murray, A.W.A., Watkins, J.L.

6. Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3

   Abstract:  Trends in mean length and maturity stage of toothfish were examined using observer data ... . A statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... with a high mean length at depth are May and August, and with a low mean length at depth are April and July ... Trends in mean length and maturity stage of toothfish were examined using observer data from ...

   Meeting Document : WG-FSA-98/58 : Author(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)

7. A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia

   (mean length 43 mm), while two other hauls (E177 and E257; densities of 135 and 60 krill ... m-2 respectively) contained small and large krill (mean length 27.5 and 49.2 mm respectively). All other net ... weighted by the mean acoustic density. Second, within each region the nets are weighted to a certain ... Peninsula and Weddell Sea areas. These values used four year classes with the mean size of l + krill ... substantial differences, due in part to bias arising from a large number of krill in just one of the station ... %), while between 1994 and 1998 the number of 1+ krill found in the population increased with a very ... Paper Title:  A composite recruitment index to describe interannual changes in the population ... net hauls. Therefore, when the number of station net hauls is limited, bias is likely to be reduced if ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Author(s): Watkins, J.L

8. Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)

   (F) different adjustments were used. Long-term mean of F, Gamma method, Pope and Shepherd method, using ... season the recruitment in the first age group was not less than long-term mean (5947 million specimens ... : a) Fishing intensity (F) in the predicted period is equal to the mean value of fishing mortality for the main ... adjustments were used. Long-term mean of F, Gamma method, Pope and Shepherd method, using F regression ...

   Meeting Document : WG-FSA-88/33 : Author(s): R. Borodin and K. Shust (USSR)

9. On the scientific observation and krill escape mortality in the krill fishery

   of data that can fill existing uncertainties, the Ukraine proposed to enhance Conservation Measure 51-06 ... existing uncertainties, the Ukraine proposed to enhance Conservation Measure 51-06 so as to provide more ...

   Meeting Document : CCAMLR-XXIX/45 : Author(s): Delegation of Ukraine

10. Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas

    and Japanese by-catch samples, and its estimated value of an arithmetic mean was 11541 ind./t krill and 34588 ... to Champsocephalus gunnari and L. larseni, and its arithmetic mean was 78523076 ind./t krill and 60352790 ind ... this area, juvenile L. larseni was the most abundant and its arithmetic mean was 10247 ind./t krill. In all ... and Japanese by-catch samples, and its estimated value of an arithmetic mean was 11541 ind./t krill and 34588 ...

    Meeting Document : WG-FSA-96/19 : Author(s): Cielniaszek, Z., Pakhomov, E.A., Iwami, T.

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