Résultats de la recherche
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An examination of latitudinal variation in the growth rates of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: Following a finding that a small sample of aged Dissostichus mawsoni from McMurdo Sound ... conducted. Length-at-age of Dissostichus mawsoni was compared across five zones in a 15.5° latitudinal range ... (62.5°–78.0° S). Between-zone comparisons were confounded by marked differences in the age structure of ... catches from the northern and southern sections of the range, and by the relatively high level of variance ...
Meeting Document : WG-FSA-03/30 : Auteur(s): P.L. Horn (New Zealand)
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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)
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The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, South Shetland Islands: evidence of opportunistic foraging on penguins?
Abstract: The diet of non-breeding male Antarctic fur seals Arctocephalus gazella was ... investigated at Harmony Point, Nelson Island, South Shetland Islands, by the analysis of 523 scats collected ... from January to March 2001 and 2002. The composition of the diet was diverse and both, pelagic and ... ), cephalopods (mainly squids) and gastropods. Among fish, Myctophids represented 86.5% and 65.8% of the fish ...
Meeting Document : WG-EMM-02/11 : Auteur(s): R. Casaux, L. Bellizia and A. Baroni (Argentina)
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A revision of yield and catch controls for managing the mackerel icefish (Champsocephalus gunnari) fishery in the vicinity of Heard Island and McDonald Islands
Abstract: A recent 2000 survey of mackerel icefish in the vicinity of Heard Island enabled a ... revised estimate of yield for the coming 2 seasons. While the biomass of icefish appears lower than in ... previous years, it is dominated by a strong age 2 year class. Estimates of yield for the Heard Island ... fishing seasons. The results of the 2000 survey confirm the need to retain a closure to fishing on Shell ...
Meeting Document : WG-FSA-00/41 : Auteur(s): A. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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FURTHERING IMPLEMENTATION OF NETWORKS OF MPAS IN ANTARCTICA AND THE SOUTHERN OCEAN
Abstract: In this paper ASOC makes the case for CCAMLR to move swiftly to begin the process of ... designating networks of comprehensive, adequate and representative marine protected areas including marine ... reserves in the Southern Ocean. Recent progress on the global agenda to implement of marine protected areas ... which criteria should be used to designate networks of marine protected areas with representativeness ...
Meeting Document : CCAMLR-XXVII/BG/26 : Auteur(s): Submitted by ASOC
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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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Peak mortality of krill, fished with midwater trawls and feasible criteria of krill trawls ecological safety
Abstract: The mathematical model of a fishery object contact against a mesh, while escaping ... elimination probability caused by cath and mortality in fishery operations. The coefficient of trawl ... ecological safety is offered, which is the ratio of the amount of the objects caught and objects caught and ... died during fishery. The equations are presented to estimate the gross removal of an object by the ...
Meeting Document : WG-KRILL-93/34 : Auteur(s): Yu. V. Kadilnikov (Russia)
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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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Manual: estimating the age of Patagonian toothfish (Dissostichus eleginoides) using transverse cross-sections of otoliths
noted in the growth parameters being used for assessments of toothfish. To assess whether these ... differences were real or else due to methods of otolith preparation and reading, scientists from CCAMLR member ... nations participated in a Workshop in 2001 at Old Dominion Unversity with the primary aim of seeking ... conformity in estimating age of Patagonian toothfish (Dissostichus eleginoides). Arising from the workshop ...
Meeting Document : WG-FSA-10/15 : Auteur(s): K. Underkoffler, N. Ramanna and J. Ashford (USA)