Résultats de la recherche
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Estimating fishing gear selectivity for Patagonian toothfish (Dissostichus eleginoides) caught by trawlers on the Heard Island plateau region (Division 58.5.2) using trawl and longline length frequency data and forward-calculated continuation ratios
Abstract: Length-dependent fishing selectivity for trawlers fishing for the Patagonian toothfish ... selectivity and a plateau section in between for the length range where fish are assumed fully selected. Using ... random length frequency (LF) data collected from each of trawlers and longliners for fishing seasons 2003 ... -2005 the upper arm of the gear selectivity function for trawlers is estimated using a two-stage process ...
Meeting Document : WG-FSA-05/65 : Auteur(s): S.G. Candy (Australia)
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Method for collecting of data on traumatic death of krill passed through the trawl meshes
Abstract: Fishing for krill Euphasia superba Dana has been conducting using midwater trawls of ... different constructions including beam-trawl for several last decades. Not all krill in harvesting zone of ... is applicable for rating of krill traumatic damage, received by it during trawling from cover of net ... bag, only for fishing with hauling of full net for catch extraction. The analogous rating for fishing ...
Meeting Document : WG-EMM-12/43 : Auteur(s): V.V. Akishin, I.G. Istomin, V.A. Tatarnikov, A.F. Petrov and R.O. Lebedev (Russia)
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The random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the waters of Heard Island (Division 58.5.2) for 2016
April, with the completion of 163 stations. The survey was conducted for the second year on the FV Atlas ... was half that of 2015 but similar to that of the long-term average for the survey. The C. gunnari ... density was five times that of 2015 and nearly three times the average. For the managed bycatch species ... catch rates were lower than the average for macrourids, close to average for C. rhinoceratus and only ...
Meeting Document : WG-FSA-16/23 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford
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Maturity stages for skates (Rajiformes)
Abstract: Current CCAMLR maturity stages for skates (Rajiformes) use a three-stage key. As such ... manual could lead to some confusion between fish at stage 2 and stage 3 (mature). Suggestions for ... updating the descriptions of the maturity stages for skates are provided, as is a rationale for considering ... a four-stage key that allows for the collection of data for fish that are at active stages of the ...
Meeting Document : CCAMLR-XXXIII/03 : Auteur(s): J. R. Ellis, S.R. McCully Phillips and V. Laptivovsky (United Kingdom)
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Maturity stages for skates (Rajiformes)
Abstract: Current CCAMLR maturity stages for skates (Rajiformes) use a three-stage key. As such ... manual could lead to some confusion between fish at stage 2 and stage 3 (mature). Suggestions for ... updating the descriptions of the maturity stages for skates are provided, as is a rationale for considering ... a four-stage key that allows for the collection of data for fish that are at active stages of the ...
Meeting Document : WG-FSA-14/33 : Auteur(s): J.R. Ellis, S.R. McCully Phillips and V. Laptivovsky (United Kingdom)
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Update of analysis on sea-ice concentration of southern part of 48.6 and 58.4.2 for the new research block on expected spawning ground of TOA
the period (2002-2017 until April) for 48.6_4 and 48.6_5. In addition, we also analyze the ice ... concentration of 58.4.2 to examine accessibility there for fishing vessels as candidate for a new research block ... . This research block is hypothesized as one of spawning grounds for TOA by Taki (WG-FSA-16/32 Rev. 1 ... ) and hence it should be covered by research for stock assessment in the near future. Author(s): T ...
Meeting Document : WG-SAM-17/10 : Auteur(s): T. Namba, T. Ichii and T. Okuda
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Assessment of yield and status of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean: implications for managing by-catch in CCAMLR fisheries
population and biological parameters were not available for this species at BANZARE Bank. Length and weight ... directly available for M. carinatus, estimates were obtained from the literature for similar species ... elsewhere in the world. The trawl survey data was used to calculate estimates of biomass and density for the ... long-term annual yield calculated for M. carinatus was 550 tonnes, based on a critical value of y of ...
Meeting Document : WG-FSA-99/69 : Auteur(s): E.M. van Wijk, A.J. Constable, R. Williams and T. Lamb (Australia)
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On the estimation of some demographic parameters for Adelie penguins
breeding may be deferred one year if conditions are poor. A Bayesian approach for estimation of the model ... Abstract: A population dynamics model for Adelie penguins is developed which takes account of the ... factors of lower adult survival rates in the year of first breeding, and the possibility that such ... tested by simulation, and it is applied to preliminary data for penguin colonies in the South Shetlands ...
Meeting Document : WG-EMM-95/42 : Auteur(s): Thomson, R.B., Butterworth, D.S.
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A Proposal for a new Antarctic Specially Protected Area (ASPA)
Abstract: A proposal for a new Antarctic Specially Protected Area, Rosenthal Islands, Anvers ... Island, Palmer Archipelago, has been submitted by the United States for consideration at the 2019 Meeting ... of the Antarctic Treaty Consultative Meeting- Committee for Environmental Protection (ATCM XLII- CEP ... is submitted for consideration by WG-EMM. Author(s): P. Penhale Title: A Proposal for a new ...
Meeting Document : WG-EMM-2019/01 : Auteur(s): P. Penhale
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Options for CCAMLR meeting duration and timing
Abstract: At CCAMLR-XXXVII, the Commission agreed that the timing and arrangements for its ... meetings could be a subject for further discussion at its meeting in 2019. This paper reviews past ... practices, explores three alternatives for shortening the meeting from 10 working days to 9 working days ... , and options for timing of the meetings that avoid any dates in November. Author(s): CCAMLR ...
Meeting Document : CCAMLR-38/BG/18 : Auteur(s): CCAMLR Secretariat