Search results
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Proposed continuation of a multi-Member longline survey on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2018/19 by Japan and South Africa
Abstract: Japan and South Africa propose to continue investigating the population structure and ... various demographic parameters of Antarctic toothfish (Dissostichus mawsoni) in the Subarea 48.6 in 2018 ... /19 using standardized longline gear, established tagging techniques, and pop-up tags. The proposed ... research is pertinent to issues raised by the Scientific Committee (SC-CAMLR-XXXV, paragraph 3.3.252-3.265 ...
Meeting Document : WG-SAM-18/04 : Author(s): Delegations of Japan and South Africa
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Improving mechanistic understanding between larval krill, krill recruitment, and sea ice
Abstract: Antarctic Krill, Euphausia superba, is the key species of the Southern Ocean ecosystem ... . Earlier analysis suggested decrease in krill abundance by 50% since the mid 1970’s to early 2000’s in the ... , timing and the duration of winter sea ice cover. The underside structures of sea ice are generally ... fundamental question for designing our future management approach for the krill fishery. The intention of this ...
Meeting Document : WG-EMM-18/07 : Author(s): B. Meyer and S. Kawaguchi
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Method of age determination for Antarctic toothfish (Dissostichus mawsoni)
Abstract: This work is based on material from Antarctic toothfish, collected in the Ross Sea from ... December 2004 to March 2005 on the longliner “Volna”. Age was determined for 364 individuals. Currently ... widely applicable "the break and burn method" was used in the present work (Chilton, Beamish ... , 1982; Penttilla, Dery, 1988). According to the method, otolith is broken into two parts across the core ...
Meeting Document : WG-SAM-12/18 : Author(s): E.N. Kyznetsova, A.F. Petrov and V.A. Bizikov (Russia)
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Distribution and biological characteristics of two toothfish species of genus Dissostichus (family Nototheniidae) off Bouvet Island
) toothfish, were registered during the fishery on Dissosyichus spp. on the shelf edge and slope of Bouvet ... Island. Their commercial concentrations were found also on the neighboring underwater plateaus ... surrounding the island. The vertical distribution of two species was differentiated distinctly, with the ... crossover point at depth of 1300 m. For both species the size and weight compositions were studied; indices ...
Meeting Document : WG-FSA-11/17 : Author(s): A.F. Petrov (Russia)
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Abundance of Patagonian toothfish (D. eleginoides) at Macquarie Island estimated from tagging studies during 1995/96 fishing season
presents an analysis of a tag-recapture experiment carried during the Macquarie Island fishery for this ... species during the 1995-96 season. Simple population and tag accumulation models are used to account for ... the tags being released at various times throughout the season, and the effects of the removals by ... obtained for the pre-fishing abundance of the population in the season of 996 000 fish. However, this is ...
Meeting Document : WG-FSA-96/39 : Author(s): de la Mare, W., Williams, R.
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Proposed updates to CEMP data e-forms and a review of CEMP Standard Methods
Abstract: Updates to the CEMP data submission e-forms for parameters A3 and A8 have been proposed ... the method descriptions for these parameters in the CEMP Standard Methods manual. However, given the ... age of this document and that the last review of the manual was completed in 2004, the Secretariat ... proposes a review of the manual intersessionally by the CEMP e-group in order to ensure that it is meeting ...
Meeting Document : WG-EMM-18/46 : Author(s): CCAMLR Secretariat
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A proposal for a Krill Ageing Inter-laboratory Calibration Workshop
Abstract: The Working Group stressed the urgency of standardising ageing method for krill ... recruitment index, the parameters for a GYM to estimate a sustainable yield (γ) (WG-EMM-19 Report Para 4.27 ... ). The WG-EMM 2019 recommended that the Scientific Committee identify resources to support a workshop to ... the draft terms of reference and the budget for the Krill Ageing workshop as described in this paper ...
Meeting Document : SC-CAMLR-38/13 : Author(s): Delegations of Australia, China, Japan, Norway and the USA
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AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
January 2007. A total of 218 specimens were selected for the study, consisting of 120 females and 98 males ... . The age of fish was estimated by counting annuli on transverse sections obtained by grinding and ... polishing whole otoliths embedded in epoxy resin in moulds. The precision of age estimates between readings ... was tested applying both the average percent error (APE) and the coefficient of variation (CV). The ...
Meeting Document : WG-FSA-08/33 : Author(s): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)
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A simulation study of krill fishing by an individual Japanese trawler
Abstract: A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ... data from the commercial fishery. Twenty-four candidate "CPUE" biomass indices are considered ... , and their performance investigated in response to six different ways in which the overall krill ...
Meeting Document : SC-CAMLR-VI/BG/38 : Author(s): D.S. Butterworth (United Kingdom)
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Temporal changes in sighting density indices of baleen whales in CCAMLR Subareas 48.1 and 48.2 based on three circumpolar sighting surveys
of Antarctic sighting cruises for whale assessment purposes organized by the International Whaling ... Commission Scientific Committee (IWC SC) in the context of the research programs ‘International Decades of ... . The density indices in both subareas suggested that humpback and fin whales were more frequently ... of importance for management of krill under the FBM. The first is the development of the stock ...
Meeting Document : WG-EMM-16/26 : Author(s): L.A. Pastene and T. Hakamada