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1. Reproductive analysis of Dissostichus mawsoni in SSRU 5841C-a for the exploratory longline fishery in 2012/13 of Korea

   vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. However, there is not enough data to ... 0.54 displaying the tendency increased with the total length became larger. The gonadosomatic index of ... of growing stage, initial vitellogenic oocytes with approximately 150 ㎛ of egg size was mainly ... proportion with 46.3% at the mature stage, and followed by the growing stage with 29.3%, and ripe stage with ...

   Meeting Document : WG-SAM-13/27 : Auteur(s): I.J. Yeon, J.S. Lee, Y.J. Kwon, M.A. Jeon, S.K. Choi, K.J. Seok, D.W. Lee, K.Y. Ku and H.J. Kim (Republic of Korea)

2. Revised reproductive analysis of Dissostichus mawsoni in SSRU 58.4.1 C for the Korean exploratory longline fishery in 2012/2013

   vulnerable with a big range of about 1,000-2,000 t per SSRU in 58.4.1. However, there is not enough data to ... displaying the tendency increased with the total length became larger. The gonadosomatic index of the female ... stage, initial vitellogenic oocytes with approximately 150 ㎛ of egg size was mainly observed. The egg ... stain. Frequency of ovarian development stages of the toothfish showed the highest proportion with 46.3 ...

   Meeting Document : WG-FSA-13/45 : Auteur(s): I.J. Yeon, J.S. Lee, Y.J. Kwon, M.A. Jeon, S.K, Choi, K.J. Seok, D.W. Lee, K.Y. Ku and H.J. Kim (Republic of Korea)

3. Relationships between oceanographic environment and distribution of krill and baleen whales in the Ross Sea and adjacent waters, Antarctica in 2004/05

   ecosystem in the Ross Sea and its adjacent waters with a joint survey the R/V Kaiyo Maru and the Japanese ... zooplankton and fishes as well as baleen whales with an oceanographic environment index (namely MTEM-200 which ... distribution patterns that could be approximately segregated patterns with MTEM-200. Humpback whales mainly ... distributed in the waters warmer than 0℃, which agreed with the Antarctic Circumpolar Current (ACC) zone, with ...

   Meeting Document : WG-EMM-08/31 : Auteur(s): M. Naganobu, S. Nishiwaki, H. Yasuma, R. Matsukura, Y. Takao, K. Taki, T. Hayashi, Y. Watanabe, T. Yabuki, Y. Yoda, Y. Noiri, M. Kuga, K. Yoshikawa, N. Kokubun, H. Murase, K. Matsuoka, T. Iwami and K. Ito (Japan)

4. Line weights of constant mass (and sink rates) for Spanish-rig Patagonian toothfish longline vessels

   kg weights at 40 m intervals on longlines to minimise interactions with seabirds. The weights are ... equipped with bags of rocks (4 kg, 6 kg and 8 kg) and lines with steel weights of equivalent masses. The ... purpose of the experiment was to provide vessel operators with the option of substituting steel weights ... for rock weights while remaining in compliance to the sink rates associated with the line weighting ...

   Meeting Document : WG-FSA-07/15 : Auteur(s): G. Robertson (Australia), C.A. Moreno, E. Gutiérrez (Chile), S.G. Candy (Australia), E.F. Melvin (USA) and J.P. Seco Pon (Argentina)

5. Interactions between cetaceans and long-lining operations for Patagonian toothfish Dissostichus eleginoides around South Georgia

   for interactions with sea mammals. Twenty-seven lines were observed and interactions recorded during ... fish/haul for all 27 lines. Sperm whales (Physeter macrocephalus) were also associated with hauling ... operations and may have been removing fish captured on the lines. Numbers of sperm whales varied with ... location; some whales with identifying masks were observed over successive lines to the south-west of South ...

   Meeting Document : WG-IMALF-94/16 : Auteur(s): J.R. Ashford (United Kingdom) and P.S. Rubilar (Chile)

6. Fishery selection for Patagonian toothfish in CCAMLR Subarea 48.3, asymptotic or dome shaped?

   waters as they age and increase in size and, in combination with the practical difficulties associated ... with deploying fishing gear at increasing depths, there is the potential for a dome shaped selection ... with age and size to arise. However this type of selection pattern is associated with the estimation of ... age with depth, is suggested as an indicator that a dome selection pattern is unlikely in the 48.3 ...

   Meeting Document : WG-SAM-15/29 : Auteur(s): C. Darby, V. Laptikhovsky and M. Soeffker (United Kingdom)

7. Ecosystem indicators: factors affecting the choice of predator performance indices for use in monitoring programmes

   . Using indices of predator performance from four species of krill-eating predator together with ... the summer showed the closest relationship with krill abundance, especially those for species with ... parameters showed no functional response relationship with annual krill abundance estimates. Combining the ... summer parameters into a single combined index provided a better fit with the krill data than any of the ...

   Meeting Document : WG-EMM-03/43 : Auteur(s): K. Reid (United Kingdom)

8. MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA

   conducted in the early, middle and late period of the summers of 2001 to 2005, together with krill ... population size structure over the same period from predator diet data, were used with a krill population ... latter there was evidence that krill recruitment was delayed by several months. A model scenario with ... correlation with the acoustic series. The results are consistent with a krill population with allochthonous ...

   Meeting Document : WG-EMM-08/48 : Auteur(s): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)

9. Modeling the growth dynamics of Antarctic krill

   in the current literature. The model was forced with an environmental time series of food (pelagic ... time series were created to represent high, low, and intermediate food conditions with the high and low ... . Simulated growth rates during the spring and summer for all size classes were consistent with published ... that were consistent with observations of experimentally starved individuals. the annual change in ...

   Meeting Document : WG-EMM-96/68 : Auteur(s): Lascara, C.M., Hofmann, E.E.

10. Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update

    . Biomass estimates generally improved with more and better quality tagging data, however important nuances ... with a low tag size-overlap, even with large numbers, is likely to result in overestimates of biomass ... and the resulting data should not be used in stock assessments with only few years of data available ... . In contrast, with a 100% tag size-overlap even low numbers of releases and subsequent recaptures ...

    Meeting Document : WG-FSA-12/18 : Auteur(s): P.E. Ziegler (Australia)

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