Résultats de la recherche
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How much do icefish (Notothenioidei, Channichthyidae) eat in the southern Scotia Arc and the Antarctic Peninsula region?
of the Antarctic Peninsula. Variability of food consumption was comparatively low between years in ... Abstract: Ration and daily food consumption in 3 low-Antarctic (Champsocephalus gunnari ... southern Scotia Arc in 1996, 1999, 2001, 2002, 2003, 2007 and 2009, and in 2006 off the north western part ... more variable in C. aceratus and C. antarcticus which, as larger fish, rely heavily on fish as their ...
Meeting Document : WG-FSA-10/18 : Auteur(s): K.-H. Kock (Germany), C.D. Jones (USA), J. Gröger and S. Schöling (Germany)
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Management of C. gunnari in Subarea 48.3
increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining to ... likelihood of substantial periodic variation in natural mortality rates. These may be associated with ... fishing, under conditions where M is assumed to be highly variable from year to year. Author(s): Kirkwood ...
Meeting Document : WG-FSA-97/38 : Auteur(s): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.
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TEMPORAL CLARIFICATION OF THE TRANSITION FROM BLUE PHASE FINGERLING TO EARLY JUVENILE BROWN PHASE IN NOTOTHENIA ROSSII FROM THE SOUTH SHETLAND ISLANDS
rossii caught in Potter Cove, South Shetland Islands, in summer of years 2003-2006 and 2008. The sample ... was composed by blue phase fingerlings of 7-7.6 cm (TL) and age group 0 year and demersal young brown ... the interpretation of the rings, particularly in the central area of the scale. To clarify two issues ... of controversy in the literature: 1) we believe that the duration of the pelagic fingerling stage at ...
Meeting Document : WG-FSA-09/32 : Auteur(s): E. Barrera-Oro, E. Moreira, N. Alescio and E. Marschoff (Argentina)
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The annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2012
RSTS were generally high in comparison with previous years, with the total fish catch being twice as ... ), anemones and corals. Catches of individual taxa were generally much lower than in previous years, except ... Abstract: The annual random stratified trawl survey at HIMI was completed in March to May of 2012 ... . A codend liner, usually in place for the entire survey, was used only in the icefish strata, Gunnari ...
Meeting Document : WG-FSA-12/25 : Auteur(s): G.B. Nowara and T. Lamb (Australia)
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Population assessment of Antarctic toothfish in Subarea 48.4 using tag-recapture method
= 0.038) gives yields of 24 t for the Antarctic toothfish in the region vs. previous estimation of 30 ... Abstract: The stock of Antarctic toothfish in the CCAMLR subarea 48.4 was estimated using as the ... Petersen method as 640 tonnes. Application of the harvest rate used for D. eleginoides in Subarea 48.3 (γ ... in Subarea 48.4 using tag-recapture method Approval: Approved ...
Meeting Document : WG-FSA-13/64 : Auteur(s): V. Laptikhovsky (United Kingdom)
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Relationship between Antarctic krill (Euphausia superba) variability and westerly fluctuations and ozone depletion in the Antarctic Peninsula area
; = 0.57) and 2-year-old krill (r = 0.69) with a level of significance of 5%. In addition, the strength of ... summer season resulted in high krill recruitment in 1987/1988, 1990/1991, and 1994/1995, while the years ... Abstract: An assessment of the environmental processes influencing variability in the recruitment ... and density of Antarctic krill (Euphausia superba) is important, as variability in krill stocks ...
Meeting Document : WG-EMM-99/52 : Auteur(s): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands derived from a long-term monitoring program (1983–2006) at Potter Cover
twenty four years, and at Harmony Cove, Nelson Island, in the austral summers from 2001 to 2003. The ... abundance of N. rossii showed an increase in years 2002-2003, whereas G. gibberifrons was absent in the ... decline in trammel net catches of fjord fishes of the species Notothenia rossii and Gobionotothen ... gibberifrons in relation to the non commercially fished Notothenia coriiceps, which was previously reported for ...
Meeting Document : WG-FSA-06/25 : Auteur(s): E.R. Barrera-Oro and E.R. Marschoff (Argentina)
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Revision of biological and population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a comprehensive survey of fishing grounds and recruitment areas in the region
the identification of Ground B as the most important area for 7 to 8 year old fish in the Heard Island ... originally estimated and that, in recent years, there has been an influx of a large number of young fish ... Abstract: Based on a survey of Dissostichus eleginoides in the Heard Island region in April 1999 ... and information from an observer program on the commercial fishery begun in 1997, this paper aims (i ...
Meeting Document : WG-FSA-99/68 : Auteur(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Decadal trends in the South Georgia demersal fish assemblage
research hauls conducted in depths < 350m during 19 research random stratified trawl surveys carried out ... appeared to be linked to habitat type. Low diversity in species was seen consistently over the Shag Rocks ... shelf. There was no detectable change in species composition across the region over three decades. Eight ... species from two families, the Notoheniidae and the Channichthyidae dominated the survey biomass in all ...
Meeting Document : WG-FSA-13/26 : Auteur(s): M. Belchier (United Kingdom)
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Some data pertaining to the distribution of Antarctic toothfish juveniles (Dissostichus mawsoni) in the Indian sector of the Antarctic
Abstract: Available in YugNIRO data concerning distribution of Antarctic toothfish juveniles in ... the Indian Sector of the Antarctic are used in the paper. In the summer period of the southern ... hemisphere (January–March) juveniles of D. mawsoni with size from 4–9 to 30–75 cm were regularly registered ... in catches of bottom and pelagic midwater trawls in all the studied continental seas from 12 to 144°E ...
Meeting Document : WG-FSA-97/19 : Auteur(s): Roshchin, E.A.