Résultats de la recherche
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THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
Abstract: A dataset for the 2009 assessment of Antarctic toothfish (Dissostichus mawsoni) in the ... Ross Sea Region was selected on the basis of data quality metrics for individual trips. Initial ... informative datasets were selected comprising trips with high (above median) rates of recovery of previously ... dataset. Where the initial informative dataset was selected comprising trips with above median rate of tag ...
Meeting Document : WG-FSA-09/35 : Auteur(s): D.A.J. Middleton (New Zealand)
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ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING
Abstract: The spatial distribution characteristics of ice-fish in the near-bottom layer are ... compared. It is shown the possibility to estimate the bottom trawl efficiency. The high heterogeneity of ... horizontal and vertical fish distribution in the near-bottom layer of the survey area is shown. Influence of ... addition, the author discuses the results of bottom trawl surveys carried out in the South Georgia area ...
Meeting Document : SG-ASAM-09/07 : Auteur(s): S. Kasatkina (Russia)
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Revision of the commercial catch at age of the Antarctic icefish Champsocephalus gunnari over the period 1976/77 to 1990/91
Abstract: A revision of the calculation of total international catch at age of Champsocephalus ... gunnari over the period 1976/77 to 1990/91 is presented. This uses iterative application of two age length ... proposed that the revised catch at age be used for future assessment of the C. gunnari fishery at South ... Georgia using VPA. Author(s): G.B. Parkes (United Kingdom) Title: Revision of the commercial catch at ...
Meeting Document : WG-FSA-93/29 : Auteur(s): G.B. Parkes (United Kingdom)
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Can the length composition of krill in predator diets provide information on the age-dependence of krill natural mortality?
of krill is split between predator species. This method uses data on the length distribution of krill ... schedule of krill natural mortality at age. In principle, such a method would allow inferences about this ... predator abundance and food consumption studies. Some results of the method are put forward purely for ... illustrative purposes. Further discussions about the practicalities of obtaining reliable estimates of the ...
Meeting Document : WG-EMM-95/40 : Auteur(s): Thomson, R.B., Butterworth, D.S.
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Antarctic krill, Euphausia superba Dana, demography studies in the seas of Sodruzhestvo and Cosmonauts (Indian Ocean sector of Antarctica)
, duration of E.superba life cycle somewhat exceeds 5 years in the Sea of Cosmonauts and 6 years in the Sea ... of Sodruzhestvo. E.superba growth rate ranges from 0.126- 0.133 mm per day in the first year 0f life ... are noted between E.superba age composition and its spawning efficiency in coastal areas of the Seas ... of Sodruzhestvo and Cosmonauts. The presence of relatively independent (self-reproducing) groupings ...
Meeting Document : WG-KRILL-93/45 : Auteur(s): E.A. Pakhomov (Ukraine)
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Update of the activities of the SCAR krill action group (SKAG) since last year’s WG-EMM
Abstract: The first annual meeting of the SCAR Krill Action Group (SKAG) met in Concarneau France ... on June 15 th and 16 th, 2019. The meeting focused on several topics including the identification of ... important knowledge gaps in krill research that could provide data in support of the management needs of ... CCAMLR. Author(s): B. Meyer and C. Reiss Title: Update of the activities of the SCAR krill action group ...
Meeting Document : WG-EMM-2019/12 Rev. 1 : Auteur(s): B. Meyer and C. Reiss
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Development of foraging behaviour and evidence of extended parental care in the gentoo penguin (Pygoscelis papua)
of gentoo penguin chicks during their “fledging period”; defined as the time between a chick’s first ... trip to sea and its final dispersal from the breeding colony. Our study was conducted at a colony of ... approximately 2500 breeding pairs of gentoo penguins in Admiralty Bay, King George Island, South Shetland ... Islands during the 2004-05 austral summer. Gentoo penguins exhibited delayed dispersal of young coupled ...
Meeting Document : WG-EMM-06/8 : Auteur(s): M. Polito and W.Z. Trivelpiece (USA)
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Estimation of the incidental capture of seabird species in commercial fisheries in New Zealand waters, 2002/03
Abstract: Ministry of Fisheries observers reported 595 seabird captures from observed fishing ... operations (95% dead). The trawl-caught seabirds were from at least eight target fisheries, four of which had ... ) trawl fisheries accounted for 87% of observed trawl-caught seabirds. Incident rates (expressed as the ... percent of observed fishing operations with seabird captures) for longline fisheries in 2002–03 were ...
Meeting Document : WG-FSA-04/57 : Auteur(s): S.J. Baird (New Zealand)
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Progress towards validation of ageing of Dissostichus eleginoides using otoliths
, fish have been treated with strontium to mark their otoliths for validation of subsequent age ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ... determination in this species: investigating the accuracy of ageing small fish (1000 days; and developing ...
Meeting Document : WG-FSA-04/67 : Auteur(s): K. Krusic-Goluband R. Williams (Australia)
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The food and feeding of five species of icefish in the Elephant Island – South Shetland Islands Region in March 2003
Abstract: We studied the food and feeding of five species of icefish in the Elephant Island ... Islands. The bulk of the diet of C. rastrospinosus consisted of krill and fish. Diet intensity, however ... proportion of the stomachs was found to be empty in C. aceratus and C. antarcticus. Author(s): K.-H. Kock, H ... . Flores (Germany), C.D. Jones (USA), S. Wilhelms and S. Schöling (Germany) Title: The food and feeding of ...
Meeting Document : WG-FSA-03/60 : Auteur(s): K.-H. Kock, H. Flores (Germany), C.D. Jones (USA), S. Wilhelms and S. Schöling (Germany)