Resultados de la búsqueda
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Managing fisheries to conserve the Antarctic marine ecosystem: practical implementation of the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR)
Abstract: Apart from exploitation of seals and whales, Antarctic fisheries began in the late ... 1960s with exploitation of the marbled rockcod, Notothenia rossii, in the South Atlantic, a species ... decimated in the first two years of the fishery following catches of about 500,000t. Two other species have ... formed the basis of substantial fisheries, krill (Euphausia superba) and mackerel icefish ...
Meeting Document : SC-CAMLR-XVIII/BG/26
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CCAMLR measures regulating the tagging of Dissostichus species, metrics used to assess vessel tagging performance, the potential for some anomalous results, and general recommendations on tagging; a view from the hauling room
Abstract: The background to the current CCAMLR toothfish tagging programme is reviewed and recent ... performance measures implemented by CCAMLR to control and monitor the tagging of toothfish (Dissostichus ... species) in exploratory fisheries carried out within the Convention Area are described. Following the ... first season of implementation we describe several circumstances which will cause anomalies in the tag ...
Meeting Document : WG-FSA-11/50 : Autor(es): J.M. Fenaughty (New Zealand) and J. Brown (United Kingdom)
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Results of the research fishing activities conducted by Chile in Management A of Subarea 48.3 from 2005–2008: the importance of conserving the big older fishes
Abstract: This research makes a contribution to the Agenda Item 8 of the WG-FSA. (Biology ... , ecology and demography of target and by-catch species) and shows the response of the local population of ... Dissostichus eleginoides (TOP) from the Area management A (subarea 48.3), after 4 year of closure (2004 to 2008 ... ). We noted an increase in the CPUE overtime, mainly associate with the increase in the median size of ...
Meeting Document : WG-FSA-10/35 : Autor(es): C.A. Moreno and P. Rubilar (Chile)
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Descriptive analysis of the Antarctic toothfish (Dissostichus mawsoni) tagging scheme in the Ross Sea for the years 1997/98 to 2003/04
Abstract: A descriptive analysis of the toothfish tagging programme carried out in the Ross Sea ... since 2001 is presented for the first time. Tag-release and tag-recapture data are presented for both ... Zealand vessels were unavailable at the time of the analysis. A total of 4903 Antarctic toothfish have ... been released and 89 recaptured, and 443 Patagonian toothfish released and 9 recaptured. For the last ...
Meeting Document : WG-FSA-SAM-05/10 : Autor(es): A. Dunn, S.M. Hanchet and K. Maxwell (New Zealand)
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An initial analysis of the characteristics of Antarctic krill taken by the commercial fishery and Antarctic fur seals during the winters of 2002 and 2003 at South Georgia
Abstract: We present an initial analysis of the fishing locations, fishing depth and length ... -frequency distribution of krill at South Georgia during the winter of 2002 and 2003 and compare these with ... the length-frequency distribution and frequency of occurrence of krill in the diet of Antarctic fur ... seals. There were significant differences in the mean size of krill taken by vessels/measured by ...
Meeting Document : WG-EMM-04/62 : Autor(es): K. Reid, D.J. Agnew, N.L. Warren and E. Owen (United Kingdom)
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The influence of the shape of meshes on the selective properties of trawls with special reference to Antarctic krill
Abstract: The results of investigations are presented on selective properties of experimental ... trawls with a square- and diamond-shaped mesh, on the traumatic rate of krill passed through a mesh and ... remained in the trawl,on the survival rate. When trawls with a square-shaped mesh were used the highest ... screening rate was observed in the cod end instead of the belly,the selective properties of the retaining ...
Meeting Document : SC-CAMLR-VIII/BG/09 : Autor(es): Delegation of USSR
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Fish in the diet of the blue-eyed shag Phalacrocorax atriceps at the South Shetland Islands: six years of monitoring studies
Abstract: In this document we inform on the results of six years monitoring changes in the diet ... of the Blue-eyed Shag Phalacrocorax atriceps as reflected by the analysis of regurgitated pellets ... collected at two localities of the South Shetland Islands. The comments are mainly focused on Gobionotothen ... the diet of this bird in the lasts years and the importance of G. gibberifrons fluctuated without ...
Meeting Document : WG-EMM-96/31 : Autor(es): Barrera-Oro, E., Casaux, R.
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Comparison of the diet of the blue-eyed shag Phalacrocorax atriceps by the analysis of pellets and stomach contents
Abstract: A total of 45 pellets from the blue-eyed shag Phalacrocorax atriceps were collected in ... January 1994 at Duthoit Point, Nelson Island, South Shetland Islands. The analysis showed fish as the main ... prey, followed by octopods, polychaetes and gastropods. Notothenia coriiceps formed the bulk of the ... diet, but Harpagijer antarcticus was the most frequent and important fish in number. The prey ...
Meeting Document : WG-EMM-95/79 : Autor(es): Silva, P., Coria, N., Favero, M., Casaux, R.
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Size variations associated with abundance changes in juvenile Notothenia rossii, observed at Potter Cove, South Shetland Islands, since the end of the fishery in the area
Shetland Islands, are used to study the decline in abundance previously reported fro fjord Notothenia ... rossii, in association with changes in the size and age structure of the juvenile population. Mean ... year classes entered the cove. In comparison, Notothenia neglecta, a non commercially fished species ... with similar ecological habits in the fjords, showed little variations around the expected overall mean ...
Meeting Document : WG-FSA-93/13 : Autor(es): E.R. Marschoff and E.R. Barrera-Oro (Argentina)
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Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons
Abstract: Following on from the apparent failure to satisfactorily assess the status of the C ... . gunnari population in Subarea 48.3 at WG-FSA-91 using VPA, attempts were made to re-work the analysis ... using Laurec-Shepherd and ADAPT tuning techniques, from 1991 back to 1977. The predicted age structure ... , dominated in recent years by the 1987 year class (1 year olds in 1988), was quite robust, despite the use of ...
Meeting Document : WG-FSA-92/27 : Autor(es): G. Parkes (United Kingdom)