Resultados de la búsqueda
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Discrimination of two species of grenadier (Gadiformes, Macrouridae), Macrourus whitsoni and M. caml, in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2) on the basis of otolith morphometrics
Abstract: Two species of grenadier are predominatly taken as bycatch in the Ross Sea region ... fish taken as bycatch in the Ross Sea on New Zealand fishing vessels in the 2011–12 fishing year were ... used to test whether the otoliths of the two species can be discriminated. Samples of both species of ... in the sample were 34.5–65.1 cm total length (TL), and 12.0–24.0 cm pre-anal length (PAL); lengths of ...
Meeting Document : WG-FSA-14/63 : Autor(es): M.H. Pinkerton, C. Ó Maolagáin, J. Forman and P. Marriott (New Zealand)
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Progress in the evaluation of management strategies for the Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
Abstract: Management Strategy Evaluation (MSE) has been acknowledged as the best practice to take ... account of uncertainties in the assessment of stocks and as a method to ensure robust management ... approaches. The Scientific Committee of CCAMLR has recommended MSE be used to determine the extent to which ... the management objectives for toothfish fisheries are being met. While the choice of management ...
Meeting Document : WG-SAM-15/48 : Autor(es): S. Mormede, A. Dunn, S.J. Parker and S.M. Hanchet (New Zealand)
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Peculiarities of spatial-temporal variability of oceanological conditions in the Weddell Sea region in the context of the development of a stock hypothesis for Antarctic toothfish (Dissostichus mawsoni) in Area 48
Abstract: A significant spatial-temporal variability of the oceanological environmental ... conditions influencing the formation of biological productivity zone in Subareas 48.5 and 48.6 is revealed ... . Analysis of available information for the development of the stock hypothesis for Antarctic toothfish stock ... in Area 48 requires consideration of environmental variability, especially with the fragmentary ...
Meeting Document : WS-SM-18/11 : Autor(es): V. Shnar and S. Kasatkina
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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 : Autor(es): F. Santa Cruz, L. Krüger, L. Rebolledo and C. Cárdenas
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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 : Autor(es): A. Brandão and D.S. Butterworth (South Africa)
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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 : Autor(es): 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 : Autor(es): 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 : Autor(es): S.M. Kasatkina and A. Sytov
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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 : Autor(es): N.V. Kokorin and I.G. Istomin (Russia)
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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 : Autor(es): T. Iwami, T. Ichii, H. Ishii and M. Naganobu (Japan)