Résultats de la recherche

1. Conditions for the precise measurement of fish target strength in situ

   the multiple echoes which is derived from a residual of the single echo extraction. With the decrease ... values TS measurement will be successful. The effectiveness of both indexes is confirmed by the data set ... calibration between Japanese and U.S. vessels on 15 and 16 August 1991. Published in J.Mar.Acoust.Soc. Author ...

   Meeting Document : WG-Krill-94/35 : Auteur(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)

2. Winter gut contents of the Antarctic krill (Euphausia superba Dana) collected in the South Georgia area

   the South Georgia area in austral winter, 12 July ~ 4 August 1992 were observed. A total of 130 ... imply that E. superba seemed to seasonally switch their food source: E. superba demonstrated herbivorous ... be important aspects for the population dynamics of krill. Author(s):  Y. Nishino and A. Kawamura ...

   Meeting Document : WG-KRILL-93/30 : Auteur(s): Y. Nishino and A. Kawamura (Japan)

3. Progress report on the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13 and 2013/14

   recaptures are within season the progress is encouraging and the indications are that sufficient tagged ... toothfish could be recaptured by the end of the current season to enable a tag-based assessment of the ... Dissostichus resource in Subarea 48.6 to be undertaken next year. Concern is expressed over the rise of IUU ... ):  R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa) Title:  Progress ...

   Meeting Document : WG-SAM-14/10 : Auteur(s): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)

4. Update report on marine mammal interactions in Division 58.4.4

   in 2012 and 2014, analyses show that 13 individuals have been interacting with the vessel. The three ... Division 58.4.4 and killer whales have been observed to interact with the vessels until 2014. Interaction ... individuals observed in 2014 were observed again in 2018 on the west part of Crozet’s EEZ along with two other ... . Tixier, T. Okuda, C. Péron and F. Massiot-Granier Title:  Update report on marine mammal interactions in ...

   Meeting Document : WG-SAM-2019/01 : Auteur(s): N. Gasco, P. Tixier, T. Okuda, C. Péron and F. Massiot-Granier

5. Abundance and trends in the breeding population of Adélie penguins (Pygoscelis adeliae) in the western Ross Sea

   summer, with just over a quarter (27.5%) at colonies on Ross and Beaufort Islands (southern Ross Sea meta ... , 2001-2010.  In contrast, a single declining trend line best represented the number of breeding pairs at ... Crozier, but not Cape Royds, remains unknown.  It is likely that the adverse oceanographic and sea ice ... resulted in adults choosing to abandon or skip breeding in the worst affected years, especially 2001.  The ...

   Meeting Document : WG-EMM-13/30 : Auteur(s): P. O’B. Lyver, M. Barron, K.J. Barton, S. Gordon (New Zealand), D. Ainley, A. Pollard (USA), P.R. Wilson and M.H. Pinkerton (New Zealand)

6. The annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari for 2015

   invertebrates in the 2015 survey was 4.6 t, with the most abundant taxa being jellyfish and the poriferan ... 2015, with the completion of 163 stations, an additional five stations compared with previous surveys ... , including the net used were identical to previous surveys. The catch rate of D. eleginoides was twice that ... of 2014 and two and a half times that of the long-term average for the survey. The C. gunnari catch ...

   Meeting Document : WG-FSA-15/11 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)

7. CPUE, net towing depth and body length of krill during the winter operation of Japanese krill fishery around South Georgia

   from net towing depth. Net tow depth data implied that overall krill distribution in the the winter ... season might be deeper than the summer season. Interannual variability of vertical distribution was also ... Peninsula region and Weddell Sea. Author(s):  Kawaguchi, S., Ichii, T., Naganobu, M. Title:  CPUE, net ...

   Meeting Document : WG-EMM-96/51 : Auteur(s): Kawaguchi, S., Ichii, T., Naganobu, M.

8. Spatio-temporal trends of longline fishing effort in the Southern Ocean and implications for seabird by-catch

   with substantial illegal longline fisheries, may be placing the long-term viability of many Southern ... distant-water pelagic fleets began fishing for tuna and tuna-like species in the early 1950s. Along with ... areas by wide-ranging seabirds. Attracted by baits and offal, the birds can be caught on the baited ... Ocean species of seabird in jeopardy. Author(s):  G.N. Tuck, T. Polacheck and C.M. Bulman (Australia ...

   Meeting Document : WG-FSA-02/43 : Auteur(s): G.N. Tuck, T. Polacheck and C.M. Bulman (Australia)

9. Acoustic assessment of potential bias in abundance estimates of mackerel icefish from trawl surveys

   (Champsocephalus gunnari). Recent acoustic data from the South Atlantic suggested that mackerel icefish may not ... always be distributed closely on the sea floor during the day as conventional wisdom would have it, but ... that a significant proportion of the stock occurred in midwater. If this is the case, then bottom trawl ... investigated. Author(s):  E. van Wijk, T. Pauly, A. Constable and R. Williams (Australia) Title:  Acoustic ...

   Meeting Document : WAMI-01/05 : Auteur(s): E. van Wijk, T. Pauly, A. Constable and R. Williams (Australia)

10. Fecundity and size at sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3)

    Georgia. Macroscopic and histological investigations revealed that absolute fecundity ranged from 22,000 ... at different stages of development suggesting that M. holtrachys may have an extended spawning season ... . Analyses of size at sexual maturity indicate that Lmat 50 occurs at 29cm (pre-anal length) whilst Lint 50 ... occurs at 20.57cm. The large difference between these values strongly suggests that yolk deposition and ...

    Meeting Document : WG-FSA-02/26 : Auteur(s): T. Mulvey, S.A. Morley, M. Belchier and J. Dickson (United Kingdom)

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