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1. Preliminary aspects of a simulation model to be used for evaluating the experimental crab fishery

   Abstract:  At the 1993 meeting of the Working Group on Fish Stock Assessment, members requested ... that work be undertaken to evaluate certain aspects of the experimental management strategy for the ... rate data from the 1991/92 crab fishery are used to motivate the construction of an ontogenetic ... fishery simulation is spatially explicit, and the dynamics of crab abundance are described on a daily ...

   Meeting Document : WG-FSA-94/26 : Автор(ы): G. Watters (USA)

2. Fish as diet of the blue-eyed shag, Phalacrocorax atriceps bransfieldensis at Half-Moon Island, South Shetland Islands

   Shetland Islands, during January and February 1993, were analyzed to determine the importance of fish in ... the diet of the blue-eyed shag Phalacrocorax atriceps bransfieldensis. Fish species were identified by ... means of otoliths found in the casts. The size and weight of the fish were estimated from the otolith ... , comprising 91% of prey items. From the 937 otoliths found, 562 fish were represented and 524 were assigned to ...

   Meeting Document : WG-CEMP-94/32 : Автор(ы): E.R. Barrera-Oro and R.J. Casaux (Argentina)

3. Estimating the level of illegal fishing using simulated scaling methods on detected activity

   , Annex 5, paragraph 3.18). The results of these simulations suggest that more information on IUU fleet ... the number of IUU fishing days, particularly for areas where patrolling may be relatively infrequent ... vessels between detecting IUU activity, thereby estimating the number of IUU fishing days, and deterring ... such activity. For assessment purposes, this highlights a general problem that the method of ...

   Meeting Document : WG-FSA-SAM-04/14 : Автор(ы): Ball, I.

4. Revised research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan

   schedule toward the submission. We investigated the biological features of D. mawsoni in the Subarea and ... adjacent data- poor fisheries using latest Observer data. The geographical distribution of sizes, GSI and ... juveniles from around west of Prydz Bay regions are speculated to migrate to Subarea 48.6 and be important ... two areas for block 48.6_2 by latitude of 55.2°S to estimate the biomasses of D. mawsoni because the ...

   Meeting Document : WG-FSA-16/32 Rev. 1 : Автор(ы): Delegations of Japan and South Africa

5. High densities of pennatulaceans (sea pens) encountered at sites in the South Orkney Islands (Subarea 48.2): three potential Vulnerable Marine Ecosystems

   Abstract:  High densities of pennatulaceans (Phylum Cnidaria: Order Pennatulacea), a vulnerable ... marine ecosystem (VME) indicator taxa, were encountered at three sites on the northeastern shelf of the ... South Orkney Islands (Subarea 48.2). The details of these encounters, utilizing occurrence and abundance ... currently registered VMEs, one of which was based solely on high densities pennatulaceans.  Although the ...

   Meeting Document : WG-EMM-18/36 : Автор(ы): C.D. Jones

6. Preliminary assessment of genetic diversity in bycatch-caught darkbelly skate (Bathyraja meridionalis) from South Georgia

   Abstract:  Reliable species identification and population assessments of skates are crucial for ... the sustainable management of their vulnerable stocks. However, species identification is a major ... molecular tools to identify specimens of softnose skates (Bathyraja spp.) caught as bycatch from the ... discrepancy between previous genetic studies of B. meridionalis and B. maccaini that challenged the ...

   Meeting Document : WG-FSA-2019/19 : Автор(ы): S. Pérez-Espona, W.P. Goodall-Copestake, P. Hollyman and M. Belchier

7. Composition and standing stock estimates of finfish from the Polarstern bottom trawl survey around Elephant Island and the South Shetland Islands (Subarea 48.1, 19 December 2006 to 3 January 2007)

   composition, biomass, and size composition of the abundant fish species was provided. Estimates of total ... South Shetland Islands and N. rossii in both areas. The proportion of juvenile G. gibberifrons ... , decreased further due to the production of poor year – classes since the late 1990’s. A concentration of N ... . rossii was found in the same location where aggregations of the species have been detected in 1975/76 and ...

   Meeting Document : WG-FSA-07/22 : Автор(ы): K.-H. Kock, J. Appel, M. Busch, S. Klimpel, M. Holst, D. Pietschok (Germany), L.V. Pshenichnov (Ukraine), R. Riehl, S. Schöling (Germany)

8. Approaches to monitoring and assessing the abundance of rattails (Macrourus spp.) and skates in the Ross Sea

   , experimental manipulation of fishing effort, catch-curve analysis, tagging programmes, bottom trawl surveys ... towards obtaining abundance estimates for rattails and skates in the Ross Sea. The major advantage of this ... range 600–1500 m to obtain a precise estimate of bycatch abundance in the area of highest densities ... (SSRUs 881E, G, H, I, J, and K). A trawl survey could also be used in conjunction with other methods of ...

   Meeting Document : WG-FSA-05/22 : Автор(ы): R.L. O’Driscoll, S.M. Hanchet and B.A. Wood (New Zealand)

9. Descriptive analysis of haul data from FV Atlantic Navigator in Elephant Islands (48.1), South Georgia Islands (48.3) and South Orkney Islands (48.3) krill fishery (summer 2004 to early winter 2005)

   (early winter 2005) with a total of 251 days of effective fishing. Descriptive study of the fishery ... continuous fishing system with air-bubbling suspension and suction of capture (CFS). Individual haul data ... were analyzed to describe differentialy catch rates (catch per day and catch per minute) of the three ... different fishing zones studied. The total catch registered was 41837 tonnes: 50% of this capture was ...

   Meeting Document : WG-EMM-05/12 : Автор(ы): O. Pin, H. Nión, E. Delfino and P. Meneses (Uruguay)

10. Exploitation of the marine environment by two sypatric albatrosses in the Pacific Southern Ocean

    . Data were analysed in relation to the bathymetry and sea-surface temperature of the foraging zones ... . Black-browed albatrosses spent 55% of their time on the Campbell Plateau but also carried out long ... foraging trips to the Polar Front and Antarctic Zone at a distance of over 2000 km. They relied heavily on ... waters the squid Martialia hyadesi was the main prey item. Grey-headed albatrosses spend 71% of their ...

    Meeting Document : WG-FSA-04/59 : Автор(ы): S.M. Waugh (New Zealand), H. Weimerskirch, Y. Cherel (France), U. Shankar (New Zealand), P.A. Prince (United Kingdom) and P.M. Sagar (New Zealand)

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