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Progress report on the research longline fishery of Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13
so far they have concentrated their sampling effort in the southern section (south of 60˚S), where ... they caught a total of 162.8 tonnes of Dissostichus spp. out of the 200 tonne catch limit (Table 2 ... ). They have taken only 65.2 tonnes of Dissostichus spp. from the northern section to date. A total of 1 ... tagging rate of 5 fish per ton. A total of 213 D. eleginoides and 5 530 D. mawsoni) were measured. The ...
Meeting Document : WG-SAM-13/05 : Автор(ы): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
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Predation release of Antarctic silverfish (Pleuragramma antarctica) in the Ross Sea
Abstract: Between 2001 and 2013 the number of breeding pairs of Adélie penguins (Pygoscelis ... half a million. It has been suggested that predation release of Antarctic silverfish (Pleuragramma ... antarctica) due to fishing of one of its predators, Antarctic toothfish (Dissostichus mawsoni), could have ... , consumption rates and diets of toothfish and Adélie penguins over the Ross Sea shelf as a first test of the ...
Meeting Document : WG-EMM-15/53 : Автор(ы): M.H. Pinkerton, P. Lyver, D. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand).
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Molecular analysis of stomach contents from Antarctic toothfish (Dissostichus mawsoni) collected from Area 58 and 88 from 2016 to 2018
, the ecology of D. mawsoni is still fragmental mainly due to the limited accessibility for the sample ... collection. Diet study provides the basic information of feeding relationship among the different trophic ... levels. Since 2016, we have been studying the stomach contents of D. mawsoni by the combination of ... report about the prey item of D. mawsoni collected from the two research areas (58 and 88) from 2016 to ...
Meeting Document : WG-FSA-2019/37 : Автор(ы): S.R. Lee, S.-G. Choi, S. Chung, D.H. An and H.-W. Kim
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2003 winter and 2003/04 breeding season
Abstract: In the fourteenth consecutive winter of the survey at Bird Island, South Georgia, the ... number of entanglements increased by 56% compared to last year and the majority of injuries were ... classified as severe (71%). In contrast the sixteenth consecutive summer of reporting saw a decrease of 45 ... % compared to last year and was the lowest number of entanglements recorded since the first observations were ...
Meeting Document : SC-CAMLR-XXIII/BG/14 : Автор(ы): Delegation of the United Kingdom
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Distribution of the Soviet fishing fleet and catches (CPUE) in Subdivision 48.3 during 1986–1990
Abstract: Analysis of the fishing fleet operation is one of preconditions of krill fishery small ... -scale management units determination. In this work the available data of haul by haul catch statistics ... along the outside periphery of the doubling off- Island current of anticyclone pattern at the points of ... current (the western ground). Temporal-spatial variability of these grounds has been analyzed. The eastern ...
Meeting Document : WG-EMM-02/63 Rev. 1 : Автор(ы): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and S.M. Kasatkina (Russia)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1997 winter and 1997/98 pup-rearing season
Abstract: Results of the survey of entanglements of Antarctic fur seals at Bird Island, South ... . Only seven seals were observed entangled in the winter, a drop of 59% from 1996. Four of these records ... were from adult females, a much higher proportion than in previous years. The number of entanglements ... in the summer was the lowest recorded to date, being 52% lower than in 1996/97. The percentage of ...
Meeting Document : SC-CAMLR-XVII/BG/11 : Автор(ы): Delegation of the United Kingdom
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Aggregation patterns of pelagic predators and their principal prey, Antarctic krill, near South Georgia
Abstract: 1. We examine the spatial distributions of pelagic seabirds and. fur seals near South ... Georgia, and asked to what extent the distributions of these predators were influenced by the spatial ... distribution of their principal prey, Antarctic krill Euphausia superba Dana. One novel aspect of our analysis ... is an explicit consideration of the separation in space between swarms of krill and aggregations of ...
Meeting Document : WG-CEMP-93/13 : Автор(ы): R.R. Veit (USA), E.D. Silverman (USA) and I. Everson (United Kingdom)
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A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments
Abstract: Length frequency distributions (LFD) of catch collected as a random sub-sample from ... /or gear specific selectivity. A distribution-free model of LFD is described which is fitted to the ... set of length quantiles L for a predetermined set of corresponding probabilities P (in this instance ... 0.05, 0.1 to 0.9 in 0.1 increments, and 0.95), constructed from individual length measurements of ...
Meeting Document : WG-SAM-13/18 : Автор(ы): S. Candy, P. Ziegler and D. Welsford (Australia)
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.2
last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in ... such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... block, in order to promote successful stock assessment. We tentatively examined the degree of coverage ...
Meeting Document : WG-FSA-13/39 : Автор(ы): Delegation of Japan
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Long term movements and activity patterns of an Antarctic marine apex predator: the leopard seal
ecosystems through local predation. Here we report on the successful use of micro geolocation logging sensor ... tags to track the movements, and activity, of four leopard seals for trips of between 142-446 days ... advance in our limited knowledge of leopard seals. We show the longest periods of tracking of leopard ... island of South Georgia. It appears that these tracked animals migrate in a directed manner towards Bird ...
Meeting Document : WG-EMM-18/P09 : Автор(ы): I.J. Staniland, N. Ratcliffe, P.N. Trathan and J. Forcada
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