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1. Interaction of sperm whales with bottom longline and the Mammal and Bird Excluding Device (MBED) operation in the Patagonian toothfish (Dissostichus eleginoides) fishery in the southwestern Atlantic

   in the southern zone (latitude 50º 00’ S) at an average depth of-1282 m. 57.2% of the total number of ... hauls were observed. Onboard observers recorded: a) quantity and quality of fish parts remaining in the ... recovered longline; b) presence and number of sperm whales and c) comparative fishing yields with and ... 77.4 % of total observed sets and the effective predation was determined in 22.6 % with MBED. Effective ...

   Meeting Document : WG-FSA-07/23 : Автор(ы): O. Pin and E. Rojas (Uruguay)

2. An interlaboratory comparison of ages estimated for Dissostichus eleginoides from the Argentine Sea, southwest Atlantic Ocean

   Abstract:  To examine consistency among laboratories in age estimation of Patagonian toothfish and ... the effects on readings of different otolith processing methods, scales and otoliths were taken from ... Institute for Fisheries Research and Development (INIDEP) Argentine, National Institute of Water and ... University, Norfolk, Virginia, United States of America. (CQFE). As a consequence of the exchange of otoliths ...

   Meeting Document : WG-FSA-04/45 : Автор(ы): M.C. Cassia (Argentina), P.L. Horn (New Zealand) and J.R. Ashford (USA)

3. The role of fish in the Antarctic marine food web: differences between inshore and offshore waters in the southern Scotia Arc and west Antarctic Peninsula

   Abstract:  The role of fish in the Antarctic food web in inshore and offshore waters is analysed ... taking as an example the coastal marine communities of the southern Scotia Arc (South Orkney Islands and ... South Shetland Islands) and the west Antarctic Peninsula. Inshore, the ecological role of demersal fish ... is more important than that of krill. There, demersal fish are major consumers of benthos and also ...

   Meeting Document : WG-FSA-02/6 : Автор(ы): E. Barrera-Oro (Argentina)

4. Preliminary standardised CPUE analysis of the New Zealand toothfish fishery in Subarea 88.1 from 1997/98 to 2001/02

   Abstract:  This report provides the first analysis of standardised catch per unit of effort (CPUE ... ), and included a number of areas that had been fished for only one season. The second (main-ground ... main area of the fishery which had been consistently fished over most seasons. For the all-ground ... analysis, variables area, season, length of line, soaktime, latitude and month in season entered the model ...

   Meeting Document : WG-FSA-02/41 : Автор(ы): R.G. Blackwell and S.M. Hanchet (New Zealand)

5. Modelling the impact of fishery by-catches on albatross populations

   developed a deterministic, density-dependent, age-structured model for assessing the effects of longlining ... tuna longline fisheries south of 30 S, to model estimated by-catch levels and other population ... parameters in the model. 3. The model used two alternative assumptions about patterns of at-sea distribution ... of wandering albatross (uniform between 30°S–60°S; proportional to the distribution of longline ...

   Meeting Document : WG-FSA-01/18 : Автор(ы): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)

6. Modelling the dynamics of krill populations in the Antarctic Peninsula region

   Abstract:  The current long-term estimates of mean recruitment rates suggest that the population ... estimates of recruitment to the population can be used to model in detail interannual variation in the ... population dynamics of krill and estimate the expected mortality rates. A number of models of the population ... dynamics of krill are used to assess to what extent they can explain the observed changes in the density of ...

   Meeting Document : WG-EMM-99/56 : Автор(ы): E.J. Murphy (United Kingdom), A. Constable (Australia) and D. Agnew (United Kingdom)

7. Increase in relative abundance of fjord Notothenia rossii in Potter Cover, South Shetland Islands, after the decrease associated with commercial fishing in the area

   Abstract:  A monitoring program of demersal fish in inshore sites of the South Shetland Islands ... has continued in Potter Cove from 1991 to 1999, covering a continuous sampling period of sixteen years ... of fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in relation to the ... previous study, is still evident. An increasing trend of N. rossii catches was observed, but the actual ...

   Meeting Document : WG-FSA-99/30 : Автор(ы): E.R. Barrera-Oro, E.R. Marschoff and R.J. Casaux (Argentina)

8. Diet of the cape petrel Daption capense during the post hatching period at Laurie Island, South Orkney Islands, Antarctica

   Abstract:  The diet of the Cape petrel Daption capense was investigated at Laurie Island, South ... contents of adults and regurgitate of chicks were sampled during the post-hatching period. The analysis ... in terms of frequency of occurrence. Fish prey formed near 64% by mass, with krill forming 35.8 ... . Amphipods were present in lower numbers and Cephalopods were only a very small portion of the diet of Cape ...

   Meeting Document : WG-EMM-96/44 : Автор(ы): Montalti, D., Coria, N.R., Soave, G.E.

9. ALLOCATING THE PRECAUTIONARY CATCH LIMIT FOR KRILL AMONGST THE SMALL-SCALE MANAGEMENT UNITS IN AREA 48: THE IMPLICATIONS OF DATA UNCERTAINTIES

   fishery in Statistical Area 48. This procedure will involve, inter alia, subdivision of the precautionary ... catch limit among a set of small-scale management units. So far the Working Group has identified six ... candidate methods for subdividing the catch limit and rejected one of them as unsuitable (Option 1 ... - subdivision based on the distribution of historical catches). In recognising the need for a “staged ...

   Meeting Document : WG-EMM-08/12 : Автор(ы): P.N. Trathan and S.L. Hill (United Kingdom)

10. THE POWER OF ECOSYSTEM MONITORING

    ecosystem monitoring programme, the utility of which depends upon its ability (measured by the statistical ... monitoring programme of the predators of Antarctic krill Euphausia superba at South Georgia together with a ... power to detect the effects of different levels of fishing was examined. 3. The power to detect the ... effects of fishing using either the krill population or a combined predator response index was low (20–40 ...

    Meeting Document : WG-EMM-08/P11 : Автор(ы): K. Reid, J.P. Croxall and E.J. Murphy

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