Résultats de la recherche
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Exploring trends of the krill fishery indicators among the NWAP D1MPA zones in the Subarea 48.1
been intensively discussed. Its implementation will establish a new scenario for the current krill ... fishing fleet dynamic, therefore it is necessary to understand what represent each D1MPA zones for the ... fishery. We analysed the trend of different fishing indicators among the D1MPA zones during the period ... 2013-2017, including as an independent zone the main fishing hotspot established recently in Bransfield ...
Meeting Document : WG-EMM-2019/41 : Auteur(s): F. Santa Cruz, L. Krüger, L. Rebolledo and C. Cárdenas
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Some additional data challenge the concept of the distribution of the gravid krill females related to bottom depths
Abstract: The distribution of krill females of the different maturity stages was considered to ... reveal the preferable bottom depths for the spawning. Calculations based on the three expanded scientific ... surveys and numerous data from observers revealed no statistically reliable tendency in the gravid females ... to move offshore to deeper waters. The possible reasons causing the spawning females distribution are ...
Meeting Document : WG-EMM-05/15 : Auteur(s): V.A. Sushin, F.F. Litvinov, A.S. Sundakov and G. Andrianov (Russia)
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Genetic structuring of Patagonian toothfish populations in the southwest Atlantic Ocean: the effect of the Antarctic Polar Front and deep-water troughs as barriers to genetic exchange
Abstract: The environmental and/or life history factors affecting genetic exchange in marine ... differentiation among populations of the Patagonian toothfish around the Southern Ocean, indicating breakdown of ... gene flow across large distances between inhabited shelf areas. The present study examined genetic ... structuring through analysis of microsatellite loci and restriction fragment length poymorphism (RFLP) of the ...
Meeting Document : WG-FSA-04/21 : Auteur(s): P.W. Shaw, A.I. Arkhipkin and H. Al-Khairulla (United Kingdom)
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Analysis of the krill spatial distribution characteristics as the important factor in fishery management in Area 48 (report of the CCAMLR scholarship recipient)
Abstract: Analysis of the krill spatial distribution characteristics as the important factor for ... the krill fishery management in Area was performed by Sytov A. being the CCAMLR Scholarship ... recipient (mentor Kasatkina S.). The data obtained from the multiannual Russian observations in the Area 48 ... , including acoustic surveys data, fishery statistics (haul by haul), the data obtained during scientific ...
Meeting Document : WG-EMM-16/41 : Auteur(s): S.M. Kasatkina and A. Sytov
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Extension of the development of a management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
“Pessimistic” current status for the toothfish resource in the Prince Edward Islands region are developed which ... take account of the different selectivities of past longline and pot fisheries. These models are used ... this resource. The MP uses two data sources: the recent trend in longline CPUE and the mean length of ... the catches made. This MP provides encouraging performance over the wide range of scenarios considered ...
Meeting Document : WG-SAM-07/10 : Auteur(s): A. Brandão and D.S. Butterworth (South Africa)
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Fishes in pelagic catches in the vicinity of the South Shetland Island during the 6th Antarctic expedition of rv Kaiyo Maru, 1990/1991
Abstract: During the 6th Antarctic Expedition of R/V Kaiyo Maru (1990/1991), observations on the ... occurrence and abundance of fishes in a total of 102 pelagic hauls for the Antarctic krill were made. Of the ... . Juvenile Lepidonotothen larseni was the most abundant (46 individuals; 44.2% in number) and post-larval ... Cryodraco antarcticus was the next (14 individuals; 13.5% in number). The standard length of L. larseni ...
Meeting Document : WG-KRILL-93/50 : Auteur(s): T. Iwami, T. Ichii, H. Ishii and M. Naganobu (Japan)
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A brief outline of the biology of the Antarctic silverfish, Pleuragramma antarcticum Boulenger, 1902 (Nototheniidae) from the Antarctic Indian Ocean
Abstract: The Antarctic silver fish (Pleuragramma antarcticum) is one of the most numerous ... species in the outer waters of Antarctica. In the Indian sector of the Southern Ocean there are at least ... three relatively isolated groups. Fish aged from 0+ to 3+ years live in the epi- mesopelagic zone where ... 4-7 years of age. The potential absolute and relative fertility of this species is one of the ...
Meeting Document : WG-FSA-92/11 Rev. 1 : Auteur(s): V.V. Gerasimchuk (Ukraine)
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Population structure of the Antarctic toothfish, Dissostichus mawsoni from the Areas 58 and 88 in the Antarctic Ocean based on mitochondrial and microsatellite DNA markers
Abstract: The Antarctic toothfish, Dissostichus mawsoni, serves as valuable fishery resources ... around the Antarctic Continent since 1997, managed solely by the Commission for the Conservation of ... crucial for improving fishery management of this species, the number of populations or stocks of D ... . mawsoni in this Antarctic region remains currently unknown. In the present study, we assess the population ...
Meeting Document : WG-FSA-2019/36 : Auteur(s): H.-K. Choi, J.E. Jang, S.Y. Byeon, S. Chung, S.-G. Choi, H. W. Kim and H.J. Lee
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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 ... waters of the Antarctic Region is given. The operational experience by the longline of the «spanish type ... » by two vessels under the Russian flag ("Yantar" and "Volna") in Antarctic waters ...
Meeting Document : WG-FSA-06/5 : Auteur(s): N.V. Kokorin and I.G. Istomin (Russia)
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Catch per unit effort data from the early years of commercial krill fishing operations in the Atlantic sector of the Antarctic
Subareas 48.1, 48.2, 48.3 for the period 1975/76 to 1987/88. Comparisons are carried out between Subareas ... . Results show that the CPUE may differ between Subareas, years and shelf/oceanic regions. Obviously, a ... consistent pattern of CPUE values does not occur over time for the entire area. High average CPUE were ... observed in the years 1975/76 and 1980/81, wheras the lowest CPUE occurred in Subarea 48.3 in 1977/78. The ...
Meeting Document : WG-EMM-97/22 : Auteur(s): Sushin, V., Siegel, V.