Résultats de la recherche
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Detection of anti-brucella antibodies in Weddell seals (Leptonychotes weddellii) from Cape Shirreff, Antarctica
from 12 Weddell Seals (Leptonychotes weddellii) at the Site of Special Scientific Interest (SSSI) Nº 32 ... gazella" of the “Instituto Antártico Chileno” (INACH) and the laboratory analysis at the Departamento ... Abstract: A serological study was initiated to determine the presence of anti-Brucella antibodies ... on marine mammals of Antarctica. For this study, blood and extra vascular fluid samples was taken ...
Meeting Document : WG-EMM-01/48 : Auteur(s): O. Blank, P. Retamal, P. Abalos and D. Torres (Chile)
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Analysis of trawl data from the South Georgia krill fishery
Abstract: Data from individual trawls carried out by vessels operating in the krill fishery at ... South Georgia are examined and a range of descriptive measurements reflecting the operation of the ... fishery are produced. The measurements indicate that the krill fishery at South Georgia is geographically ... focussed, operating in a limited area along the shelf edge on the northern coast of the island. Each day a ...
Meeting Document : WG-EMM-97/41 : Auteur(s): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.
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Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994
of empty stomachs were found at South Georgia and Shag Rocks, close to the values reported for the ... Abstract: The diet composition of the icefish Champsocephalus gunnari caught in the Subarea 48.3 ... in February/March 1994 was analyzed using the frequency of occurrence (%) method. Krill (Euphausia ... superba) followed by the amphipod hyperiid Themisto gaudichaudii were the main prey items at South Georgia ...
Meeting Document : WG-FSA-94/27 : Auteur(s): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)
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Update on the external review of the Generalised Yield Model (GYM) software and manual
could then evaluate tenders at the meeting of WG-FSA in October 2004, and SC-CAMLR-XXIII could consider ... Abstract: In 2003, WG-FSA requested that the Secretariat supervise an external review of the GYM ... included: • Members providing guidance on the scope of the review; • Members proposing appropriate ... independent experts to conduct the review; • Reviewer to complete the review by end of June 2004 and report to ...
Meeting Document : WG-FSA-SAM-04/05 : Auteur(s): CCAMLR Secretariat
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On the intensity of sampling krill trawl catches
(e.g. length-with-age). At present, and in the interests of both statistical rigour and the efficiency ... most purposes a minimum sample size of at least 100 animals/trawl is necessary to obtain statistically ... of determining adequate sample size to obtain representative krill length frequency distributions ... from commercial catches. In addition, the possible effect of two other factors (within-trawl ...
Meeting Document : WG-KRILL-90/27 : Auteur(s): D.G.M. Miller (South Africa)
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Abundance and richness of key Antarctic seafloor fauna correlates with modelled food availability
show that fluctuating seabed currents are crucial in the redistribution of surface productivity at the ... Abstract: Most seafloor communities at depths below the photosynthesis zone rely on food that ... sinks through the water column. However, the nature and strength of this pelagic–benthic coupling and ... its influence on the structure and diversity of seafloor communities is unclear, especially around ...
Meeting Document : WS-SM-18/P01 : Auteur(s): J. Jansen, N.A. Hill, P.K. Dunstan, J. McKinlay, M.D. Sumner, A.L. Post, M.P. Eléaume, L.K. Armand, J.P. Warncock, B.K. Galton-Fenzi and C.R. Johnson
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Fine-scale genetic investigation into Patagonian toothfish structure within the west Indian Ocean sector of the Southern Ocean
Abstract: Molecular markers were employed to investigate the fine-scale stock structure of ... Patagonian toothfish in the west Indian Ocean sector of the Southern Ocean. Four collections of toothfish ... genetically using two fragments of mtDNA and seven nuclear microsatellite loci. MtDNA haplotype diversity was ... moderate; ranging from 0.331 to 0.343. Allelic variation at the seven microsatellite loci was widespread ...
Meeting Document : WG-FSA-03/66 : Auteur(s): S.A. Appleyard, R. Williams and R.D. Ward (Australia)
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Echo integration in low signal to noise regimes: methods of noise estimation and removal
Abstract: The results of acoustic surveys, especially in low signal-to-noise regimes, are ... sensitive to the method used to exclude the contribution of background noise from the acoustic data. The use ... of thresholds to reject weak signals during data collection is inappropriate because the noise ... log unthresholded data and to correct for noise in post processing. Integrated data collected at 120 ...
Meeting Document : WG-EMM-97/74 : Auteur(s): Higginbottom, I., Pauly, T.
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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
of controversy in the literature: 1) we believe that the duration of the pelagic fingerling stage at ... by combining age/length data of the juvenile phase of N. rossii from this and a previous study at ... Abstract: Scales and whole otoliths were read for age determination of early stages of Notothenia ... rossii caught in Potter Cove, South Shetland Islands, in summer of years 2003-2006 and 2008. The sample ...
Meeting Document : WG-FSA-09/32 : Auteur(s): E. Barrera-Oro, E. Moreira, N. Alescio and E. Marschoff (Argentina)
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Review of activities in monitoring marine debris in the CAMLR Convention Area
colonies of grey-headed albatrosses and black-browed albatrosses at Bird Island has increased recently, and ... -fishing items such as packaging and wood remain the most common type of debris items found in beach ... found in beach surveys with closed bands found at Bird Island (1) and King George Island (3), despite ... Conservation Measure 26-01 requiring packaging bands to be cut up into 30 cm pieces. The amount of debris in ...
Meeting Document : WG-IMAF-11/04 Rev. 1 : Auteur(s): Secretariat