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1. Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices

   with significant losses for fisheries and potential impacts on wild populations of depredating species ... identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... orca) interacting with Patagonian toothfish (Dissostichus eleginoides) longliners off the Crozet ... islands. Data collected by fishery observers from 6,013 longline sets between 2003-2013, paired with ...

   Meeting Document : WG-FSA-14/P03 : Author(s): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet

2. Gonad analysis of Antarctic toothfish in Subareas 58.4 and 88.3

   found to be 0.50, and displayed the tendency of increase with increase in the total length 140 cm. The ... -synchronous type. In the ovaries of growing stage, initial vitellogenic oocytes with approximately 150 ㎛ of ... . Frequency of ovarian development stages of Antarctic toothfish showed the highest proportion with 45.4% at ... the ripe stage, and followed by the growing stage with 25.9% and mature stage with 28.7%. Frequency of ...

   Meeting Document : WG-FSA-17/09 : Author(s): J. Kim, S.-G. Choi, J. Lee, J. Lee and D. An

3. APPLYING A TS-PROBE FOR MEASURING ANTARCTIC KRILL (EUPHAUSIA SUPERBA) TARGET STRENGTH IN SITU: PROCEDURES AND DATA ANALYSIS

   and analysis with some results for one selected station are presented. A Simrad EK60 split beam system ... transducers with 7o half power beam opening angles. The orientation of the probe was monitored with sensors ... transducer platform with the purpose of measuring the orientation of the organisms. All system communication ... documented through recordings with hull-mounted ship echosounders and verified through net samples. The probe ...

   Meeting Document : SG-ASAM-09/13 : Author(s): G. Skaret, L. Calise and E. Ona (Norway)

4. 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 : Author(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)

5. 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 : Author(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)

6. 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 : Author(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)

7. 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 : Author(s): J.R. Ashford (United Kingdom) and P.S. Rubilar (Chile)

8. 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 : Author(s): K. Reid (United Kingdom)

9. 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 : Author(s): G. Robertson (Australia), C.A. Moreno, E. Gutiérrez (Chile), S.G. Candy (Australia), E.F. Melvin (USA) and J.P. Seco Pon (Argentina)

10. Norwegian Cruise to Kong Håkons VII Hav 28 February – 10 April 2019

    registered birds, seals and whales systematically and registered krill and fish abundances using echo sounder ... concentrations of krill, humpback whales and birds. We found some large concentrations of krill in the pack ice ... registered birds, seals and whales systematically and registered krill and fish abundances using echo sounder ... bloom we had large concentrations of krill, humpback whales and birds. We found some large ...

    Meeting Document : WG-EMM-2019/48 : Author(s): H. Steen

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