Résultats de la recherche
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Proposal to continue participation in the second year of the joint CCAMLR research survey to collect spatially stratified longline and bathymetric data in 88.2_A and 88.2_B in 2015/16
Abstract: Toothfish in SSRUs 882.A–B are currently managed as part of the Ross Sea region stock ... the management across all of the region. Recognising this requirement, the Scientific Committee ... endorsed two years of spatially stratified longline surveys in the northern region of SSRUs 88.2A–B (SC ... established to map and sample the fishable areas of SSRUs 88.2 A–B north of 66° S latitude. Following its ...
Meeting Document : WG-SAM-15/41 : Auteur(s): Delegation of Norway
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Susceptibility to oxidative stress in different species of Antarctic birds: preliminary results
against toxicity of reactive oxygen species (ROS). These highly reactive molecules are normally produced ... during the 4-electrons reduction of molecular oxygen to water coupled with oxidative phosphorylation and ... during the activity of several enzymatic systems which produce ROS as intermediates. If the antioxidant ... capacity is exceeded (i.e. as a consequence of enhanced intracellular formation of ROS) a pathological ...
Meeting Document : WG-EMM-99/59 : Auteur(s): S. Corsolini, F. Regoli, S. Olmastroni, M. Nigro and S. Focardi (Italy)
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Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region
Abstract: Commercial exploitation of finfish in the southern Scotia Arc took place from 1977/78 ... to 1989/90, with its heydays from 1977/78 to 1981/82. Except for Elephant Island, the state of fish ... stocks of the southern Scotia Arc region has found little attention until 1998 despite substantial ... catches in the first four years of the fishery and the possibility to sample these catches extensively ...
Meeting Document : WG-FSA-99/16 : Auteur(s): K.-H. Kock (Germany), C. Jones (USA) and S. Wilhelms (Germany)
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THE RISK TO FISHERY PERFORMANCE ASSOCIATED WITH SPATIALLY RESOLVED MANAGEMENT OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA) HARVESTING
will affect fishery performance. One metric of potential performance is the probability of encountering ... exploitable densities of the target species at the scale of fishing operations. The probability of ... encountering exploitable densities of Antarctic krill, Euphausia superba, at the 1 nm scale during an acoustic ... spatial scale of management units could usefully predict effects at the scale of fishing operations ...
Meeting Document : WG-EMM-09/P10 : Auteur(s): S. Hill, P. Trathan and D. Agnew
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PROPOSAL FOR AN EXTENSION TO THE MARK–RECAPTURE EXPERIMENT TO ESTIMATE TOOTHFISH POPULATION SIZE IN THE SOUTH OF SUBAREA 48.4
Abstract: 1. A three-year tagging study in the South of Subarea 48.4 was initiated in the 2008/09 ... fishing season with the aims of providing the data required for assessments of the population structure ... , size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South of ... 48.4; 2. In 2008/09 a total of 214 D. eleginoides and 192 D. mawsoni were tagged and released. Two ...
Meeting Document : WG-FSA-09/18 : Auteur(s): J. Roberts and D.J. Agnew (United Kingdom)
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Results of E.L. Holmberg 1995 fish survey in Subarea 48.3
Abstract: The survey comprised 48 bottom trawl hauls taken in subarea 48.3. About 80% of the ... hauls were intended as replicates of the position of hauls in the 1994 survey, allowing site by site ... comparison between both cruises. Of these, 20 hauls were located at less than 0.5 miles and 11 between 0.5 ... aggregation of stations in a nested ANOVA model. An increase over last year's values was observed in the ...
Meeting Document : WG-FSA-95/35 : Auteur(s): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.
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Trophic relations of the cephalopod Martialia hyadesi (Teuthoidea: Ommastrephidae) at the Antarctic Polar Front, Scotia Sea
Abstract: Samples of the squid, Martialia hyadesi, were collected aboard two Japanese squid ... Sea in February 1989. The dissected stomachs of 61 specimens were classified according to fullness and ... proportion of the sample had been feeding cannibalistically. Total lengths of the fish prey were estimated ... from sagital otolith size using published relationships. All fish were relatively small; 7- 35% of ...
Meeting Document : SC-CAMLR-XI/BG/11 : Auteur(s): Delegation of United Kingdom
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Larval fish distribution and abundance of the western Ross Sea
carried out in the western Ross Sea in November-December 1994. The present study focused on improvement of ... the knowledge of the larval fish community in relation to its distribution and relative abundance. A ... specimens of twentyone species belonging to six families (Artedidraconidae, Bathydraconidae, Channichthyidae ... abundance of larval fish in the whole area was about 2.7 specimens / 1000 m3 of sea water filtered. The ...
Meeting Document : WG-FSA-95/11 : Auteur(s): Greco, S., la Mesa, M., Vacchi, M.
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An assessment of Chaenocephalus aceratus and Pseudochaenichthys georgianus in Subarea 48.3
because of a lack of reliable biological and catch data. This paper attempts to reconstruct the fishery ... for these two species by assuming that 75% of the ‘unidentified fish’ caught by the Soviet Union in ... the years 1977 to 1988 consisted of catches of C. aceratus and P. georgianus. Biological, age-length ... from surveys, and indicate that the stock of C. aceratus has decreased from 18 000 tonnes to 6 000 ...
Meeting Document : WG-FSA-90/06 : Auteur(s): D.J. Agnew (Secretariat) and K.-H. Kock (Germany)
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Is toothfish catch correlated with the catch of vulnerable benthic invertebrate taxa?
Abstract: Accurate estimation of the true impact of bottom fishing on vulnerable marine ... ecosystems (VMEs) requires knowledge of the distribution of those communities relative to the fishing ... study used the catch of the six most common vulnerable invertebrate taxa reported by observers on New ... benthic invertebrate catch rates at a longline segment level. Analysis of the data available showed no ...
Meeting Document : WG-EMM-10/27 : Auteur(s): S.J. Parker and M.H. Smith (New Zealand)