Search results
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On maturity level of gonads of Antarctic toothfish Dissostichus mawsoni from the southern Ross Sea (Subarea 88.1) in December 2005–February 2006
Antarctic toothfish Dissostichus mawsoni were collected from Subarea 88.1 on board of the longliner “Yantar ... ” under Russian flag in the 2005/06 season. Our supposition is that the predominant part of Antarctic ... participation in spawning of the current year. Ovaries of the most females weighed less than 2.0 kg; average GSI ... value of all the females examined did not exceed 2.0%. Author(s): V.G. Prutko (Ukraine) Title: On ...
Meeting Document : WG-FSA-06/9 : Author(s): V.G. Prutko (Ukraine)
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Preliminary results of age determination by otolith mass in mackerel icefish Champsocephalus gunnari Lonnberg 1905 in the Heard Island area (Australia)
Abstract: To determine mackerel icefish Champsocephalus gunnari age, otolith mass was used. The ... material was collected in July0August 1987 during the joint Soviet-Australian expedition on board R/V ... PROFESSOR MESYATSEV to heard Island shelf area. The otoliths were weighted with an electric balance to ... within 0.0001 g. Then the obtained data underwent statistical processing with application of the cluster ...
Meeting Document : WG-FSA-94/08 : Author(s): I.B. Russelo (Ukraine)
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A history of the acquisition and analysis of sea-ice data by CCAMLR
the early years of development of the ecosystem monitoring program sea ice data, especially derived ... 1990, and following a pilot study carried out by the Secretariat sea ice data derived from US Joint Ice ... Centre ice charts were routinely acquired and analysed by the Secretariat from 1993. An alternative ... source of data, digital images produced by the US National Snow and Ice Data Centre, with a relatively ...
Meeting Document : WG-EMM-96/15 : Author(s): Agnew, D.J.
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 and 120 kHz
Abstract: Differences in the target strength of adult Antarctic krill (Euphausia Superba) at 38 ... and 120 kHz have been inferred from differences in the mean back-scattering strength of swarms ... simultaneously insonified at these two frequencies in studies off the South Orkneys and Elephant Island in March ... in average target strength at these two frequencies. The results are in good agreement with recent ...
Meeting Document : WG-KRILL-90/28 : Author(s): I. Hampton (South Africa)
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A re-analysis of the Kerguelen Shelf and Skiff Bank stocks of Champsocephalus gunnari
Abstract: Catches of Champsocephalus gunnari from the Kerguelen Shelf and Skiff Bank stocks were ... re-calculated from those used by the Working Group on Fish Stock Assessment in 1989 using length ... -frequency data for the years 1981 to 1990. Cohort analysis yielded a Stock Biomass of 22 711 tonnes in 1988 ... for the Age 2 Kerguelen Shelf stock, an order of magnitude lower than that calculated from a biomass ...
Meeting Document : WG-FSA-90/17 : Author(s): G. Duhamel (France) and D.J. Agnew (Secretariat)
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Report from the Workshop on Krill-fishery Management for Subareas 48.1 and 48.2 (Concarneau, France, 10 to 14 June 2019)
Abstract: We briefly report on a workshop held from 10-14 June, 2019 at the Pôle Nautique and ... Museum of Natural History in Concarneau, France (immediately prior to the annual meetings of WG-SAM and ... WG-EMM). The Workshop was attended by representatives from ARK, ASOC, Pew, and WWF plus scientists ... from Argentina, Australia, Chile, France, Germany, Korea, Norway, Ukraine, the UK, and the USA. Funding ...
Meeting Document : SC-CAMLR-38/16 : Author(s): G. Watters and P. Trathan
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Genetic analysis of Antarctic toothfish samples from the Southern Ocean to explore potential stock boundaries
restriction enzyme digests of nine sub regions of the mitochondrial genome. Polymorphisms were found in four ... out of seven introns digested with the restriction enzymes, but there was no population ... differentiation among the three sea areas. While direct sequencing of cytochrome b (665 base pair) showed ... virtually no variation, sequences for ~600 bp of the left domain of the control region showed nucleotide ...
Meeting Document : WG-FSA-04/32 : Author(s): P.J. Smith, S.M. McVeagh (New Zealand) and P.M. Gaffney (USA)
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PROPERTIES OF WATER DYNAMICS AND KRILL DISTRIBUTION IN THE SOUTH SANDWICH ISLANDS SUBAREA
Abstract: of mean krill density in Subarea 48.4 there are premises for formation of the zones ... with increased density. These zones are located within the near-shore shelf-based SSMU and associated ... with meanders and eddy favorable for krill concentration. Here, in the cold water of the Weddell Sea ... , the main part of biomass of Subarea 48.4, are concentrated. In January-February, 2000, almost 60% of ...
Meeting Document : WG-EMM-09/44 Rev. 1 : Author(s): S.M. Kasatkina and V.N. Shnar (Russia)
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A generalised model for evaluating yield and the long term status of fish stocks under conditions of uncertainty
flexibility for assessing the influence of different patterns of growth, natural mortality, spawning and ... fishing on the estimates of yield per recruit. Also, it can be used to evaluate the performance of a stock ... under a specified catch regime. The model uses an adaptive Runge-Kutta procedure to evaluate stock ... each year by integrating a set of differential equations which incorporate functions that specify the ...
Meeting Document : WG-FSA-95/41 : Author(s): de la Mare, W.K., Constable, A.J.
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Continuation of multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia, France, Japan, Republic of Korea and Spain
rules remain to be determined for these Divisions. WG-FSA-16/29 outlines the first multi-member ... milestones in accordance with ANNEX 24-01/A. In 2016, the Scientific Committee agreed that the research plan ... the continuation of the research plan as set out in WG-FSA-16/29. All significant changes to the plan ... . Issues arising from the 2016/17 season are also provided in Section B. Author(s): Delegations of ...
Meeting Document : WG-FSA-17/18 Rev. 1 : Author(s): Delegations of Australia, France, Japan, Republic of Korea and Spain