Résultats de la recherche
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Use of a deep-water longline of the Spanish type and its modifications in the Russian research of Ross Sea toothfish during the season 2004/05–2005/06
Abstract: The description of a design of longline of the "spanish type" on European ... hake (Merluccius merluccius) fishery in the coastal and deep waters of the North Atlantic and its ... modifications used on fishery of Antarctic toothfish (D. mawsoni) and Patagonian toothfish (D. eleginoides) in ... waters of the Antarctic Region is given. The operational experience by the longline of the «spanish type ...
Meeting Document : WG-FSA-06/5 : Auteur(s): N.V. Kokorin and I.G. Istomin (Russia)
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A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia
Paper Title: A preliminary investigation of the possible effects of rhizocephalan parasitism on ... the management of the crab fishery around South Georgia Abstract / Description: Relatively high ... levels of infection by a rhizocephalan barnacle have been found in the population of the crab Paralomis ... spinosissima, which has been harvested by a new fishery around South Georgia (Subarea 48.3) since 1992. One of ... aimed at capturing the main characteristics of the system under consideration: the fishery for P ... development involves the eruption of 'externa'. Some related species of rhizocephala are known to require at ... reference to suggest what the life-span of the parasite is likely to be, but at the one extreme a parasite ... validity of this assumption depends on whether the size at morphometrical maturity can be assumed to be ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Auteur(s): Basson, M
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Optimization of survey sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins
the optimal allocation of observations at each level in nested ANOVA designs. The optimal numbers of ... errors fixed at 0.1. Cost values of manpower required are based on Argentinian logistics. File: 34 ... Paper Title: Optimization of survey sampling design in the detection of interannual variability ... and prey size selectivity in the diet of penguins Abstract / Description: Based on the preliminary ... penguin size-related selectivity were analyzed in order to find the optimal allocation of observations at ... allocation of observations at each sampling level. Noting that penguin selectivity not only might affect ... PENGUINS At the 1989 Meeting ofWG-CEMP, the desirable minimum size of changes to be detected was set at ... costs of sampling at each level, it is possible to define a sampling protocol achieving the desired ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 551–559 : Auteur(s): Marschoff, E. and B. Gonzalez
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Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)
in localised areas for periods of at least three days. The results suggest that there is greater ... Paper Title: Use of the Leslie stock depletion model for the assessment of local abundance of ... toothfish (Dissostichus eleginoides) around South Georgia and the Pacific coast of Chile. This paper ... presents a re-working and synthesis of previous analyses to examine whether declines in CPUE can be ... against cumulative catch, when single vessels operate in localised areas for periods of at least three ... are indications of significant levels of unreported catch from Subarea 48.3. At its 1995 meeting the ... attempted to assess the status of the toothfish fishery in Subarea 48.3 at its annual meetings since the ... showing locations of fishing grounds at which the data for this study were collected. Assessment of ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Auteur(s): Parkes, G., C.A. Moreno, G. Pilling and Z. Young
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Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata (Fischer, 1885) in January/February 1985
since 1981/82 and is still close to length at sexual maturity. The major part of the population ... Paper Title: Preliminary results of investigations of the Federal Republic of Germany on ... further basic data needed for stock assessment purposes, to assess the actual size of Notothenia rossii ... probably still less than 10% of the pristine stock, Mean length in the catches has only slightly increased ... and is still close to length at sexual maturity. The major part of the population consisted of age ... isLmds of the Scotia arc (FREYTAG, 7980). Before the onset ot large scale commercial exploitation at ... - cruitment to the offshore pur.t of the population slarts at about 35 cm although few individuals less than ... ::,e size at first cc.pLure. The 50 % retention length of 160 Hllll mesh size, ho1-1ever, is probably ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 33-57 : Auteur(s): Kock, K.-H.
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The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters
samples from the same penguin or studying portions of stomach samples at different stages of digestion are ... Paper Title: The use of analysis of penguin stomach contents in simultaneous study of prey and ... predator parameters Abstract / Description: Size selectivity of krill by penguins is shown to be highly ... sensitive to the statistical assumptions made during the analysis of data. The nested ANOVA method is ... penguin or studying portions of stomach samples at different stages of digestion are proposed as ... 2). At this stage it seems reasonable to assume that the question of size selectivity of krill by ... within dates" component is, at least partially, a consequence of patch distribution of krill. A fraction ... to interpret because the distribution of penguins at sea is basically non-random. The proposed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Auteur(s): Marschoff, E. and B. González
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A functional division of Electrona carlsbergi (Tåning, 1932) area of habitat in relation to the latitudinal zonation of the Southern Ocean
Paper Title: A functional division of Electrona carlsbergi (Tåning, 1932) area of habitat in ... relation to the latitudinal zonation of the Southern Ocean Abstract / Description: During the cruise of ... Southern Atlantic along two meridional transects at 17° and 20°W in the latitudes from 37°30' to 55°30 ... 'S. The survey was mainly focussed on studies of distribution of adult and pre-spawning Electrona ... ; Lutj eharms , 1985; Lutjeharms and Foldvik, 1986) points at circumpolar distribution of STFZ (with the ... °S at 17°W. Moreover, an anticyclonic meandering current on the southern boundary of the STFZ (or a ... gyre formed in this frontal area) has been identified along the transect of 200W at 44° to 45°S. The ... northern boundary of the PFZ (Sub-Antarctic Front) at 200W was located between 48° and 48°30'S. At 17°W ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 369–395 : Auteur(s): Zemsky, A.V. and S.A. Zozulya
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Results of Soviet investigations of the distribution and ecology of pelagic squids (Oegopsida) in the Southern Ocean
total of 326 squid specimens were collected at 124 stations with sampling by midwater nets. 125 ... Paper Title: Results of Soviet investigations of the distribution and ecology of pelagic squids ... of the distribution and ecology of pelagic squids (Oegopsida) in the Southern Ocean. In 1965–1977 a ... specimens of that total were identified as Brachioteuthis riisei. In recent years (1978-1984) the collection ... -1977 a total of 326 squid specimens were collected at 124 stations with sampling by 1nidwater nets ... specimens of Antarctic Squids were collected at 124 stations with midwater hauls in the Southern Ocean ... species into the productive areas of the temperate vatere of the boreal and notal zones. At the same ... the modern continents of South America, Australia and Antarctlea. At that time, the continent was ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 79-111 : Auteur(s): Lubimova, T.G.
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Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea
and 1997. Estimated densities of krill at El were most often higher than at SG, although this may ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... interestingly, the magnitudes of abundance and between-year gradients of change of abundance at each site were ... mirrored by those at the other location; for example, 1991 and 1994 were years of very low krill density at ...
Meeting Document : WS-AREA 48-98/11 : Auteur(s): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)
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Distribution, morphology, growth, reproduction, diet and trophic position of two species of grenadier (Macrourus whitsoni and M. caml) in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2)
left pelvic fin; number of rows of teeth in the lower jaw) were very effective at distinguishing ... different growth rates; M. whitsoni approaches full size at about 10–15 years of age and can live to at ... least 27 years; in M. caml, full size is attained at about 15–20 years of age and they can live in ... excess of 60 years. However, sexual maturity in female M. whitsoni is reached at longer length and older ...
Meeting Document : WG-FSA-12/54 Rev. 1 : Auteur(s): M.H. Pinkerton, P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown (New Zealand)