Search results
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RESEARCH PLAN FOR TOOTHFISH BY SHINSEI MARU NO. 3 IN 2008/09
No.3, in 07/08 season covering the whole SSRUs (Small Scale Research Units). In the course of this ... first year survey, important information, including information on distribution of toothfish, size ... composition of toothfish, and by-catch species, has been obtained. However, the information obtained by just ... consider possibility of re-opening the area for new and/or exploratory fishery. Therefore, it is essential ...
Meeting Document : WG-FSA-08/39 : Author(s): Delegation of Japan
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OTOLITH CHEMISTRY INDICATES POPULATION STRUCTURING BY THE ANTARCTIC CIRCUMPOLAR CURRENT
Abstract: Large-scale transport of seawater in ocean currents may generate spatially complex ... population structure through the advection of life stages of marine fish species. To test this, we compared ... the chemistry of otolith nuclei from Patagonian toothfish (Dissostichus eleginoides), presently ... Circumpolar Current (ACC), which transports water eastward around the Southern Ocean. The chemistry of otolith ...
Meeting Document : WG-FSA-08/P05 - Abstract : Author(s): J.R. Ashford, C.M. Jones, E.E. Hofmann, I. Everson, C.A. Moreno, G. Duhamel and R. Williams
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Updated species profile for Antarctic toothfish (Dissostichus mawsoni)
Abstract: A species profile, covering aspects of the biology, fisheries and stock assessment of ... , and depredation. It focused primarily on the biology of D. mawsoni based on information collected from ... the Ross Sea fishery because that was where most of the work had been carried out. The aim of the ... current work was to update and revise the species profile of Hanchet (2006). It updates, collates, and ...
Meeting Document : WG-FSA-10/24 : Author(s): S.M. Hanchet (New Zealand)
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Predicting fishing ground accessibility in the Antarctic Weddell Sea
Abstract: Sea ice is a major constraint of fishery performance in the Southern Ocean seasonal sea ... establish statistical models of (i) accessibility, i.e. the probability that a particular area is navigable ... by fishery vessels at a given time, and of (ii) repeated accessibility, i.e. the probability that a ... conditions almost 50% of the entire WSMPA Planning Area is not suitable for fishery vessels at any time of ...
Meeting Document : WG-SAM-18/01 : Author(s): H. Pehlke, K. Teschke and T. Brey
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Observer activities on Japanese krill fishing vessels in the CCAMLR Convention Area
. Although the increase of expected catch of krill notified in recent years has caused concerns among some ... ) determine the level of by-catch of larval finfish, and (iii) better understand the occurrence of warp-strike ... by seabirds”. Japan believes that the purpose of observer activities for krill fishery can be ... achieved through voluntary efforts by Members. Author(s): Delegation of Japan Title: Observer activities ...
Meeting Document : CCAMLR-XXVI/BG/41 Rev. 1 : Author(s): Delegation of Japan
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Otolith and body size relationships in the bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
Abstract: A large sample of otoliths from Bigeye Grenadier (Macrouros holotrachys) caught as ... their usefulness as predictors of fish size was determined. Otolith mass provides a good measure of fish ... length whereas otolith length and width measurements provide less accurate estimates of fish length ... . Seasonal variations in fish mass with reproductive condition need to be considered if predictions of mass ...
Meeting Document : WG-FSA-01/39 : Author(s): S. Morley and M. Belchier (United Kingdom)
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Yet further krill yield computations
Abstract: Preliminary computations are carried out for the krill yield model of Butterworth et al ... . (1993), adjusted as requested by the fifth meeting of WG-KRILL. This involves modifying the input ... distributions for the lengths at recruitment and maturity, natural mortality and the extent of recruitment ... variability. Sensitivity tests are carried out to assess the consequences of avoidance of gravid females by ...
Meeting Document : WG-Krill-94/23 : Author(s): R.B. Thomson and D.S. Butterworth (South Africa)
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Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004
Islands and off the Barff Peninsula, South Georgia, from a 59 foot yacht in January 2004. The purpose of ... were collected in seastate 6 with winds up to 30 knots and swells of approximately 2.5 m at survey ... speeds of up to 7 knots. Echo intensity data were scaled to krill density using a target strength ... determined from the length distribution of krill sampled from fur seal scats at Bird Island (mean krill ...
Meeting Document : WG-EMM-04/35 : Author(s): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2006/07 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model resulted in a slightly lower estimate of initial biomass than the 2006 base case. The inclusion of ... the 2007 recaptures of 2006 tags released had the most substantive impact on the model estimates ... . Models using tag-recapture data from all vessels are also presented. Inclusion of all vessels tagging ...
Meeting Document : WG-FSA-07/37 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Characterising the preferred at-sea habitats used by chinstrap penguins and the fishery for Antarctic krill: slow-flowing, nearshore waters over shallow bathymetry
of chinstraps breeding at the South Shetland Islands, based on the distance from the colony, and the ... bearing to the shelf edge, adjusting for the at-sea density of Pygoscelis penguins from other colonies ... locations of animals during the breeding season from untracked colonies, even in different regions and ... bathymetry, but that they also sometimes move towards the edge of the continental shelf where the faster ...
Meeting Document : WG-EMM-17/34 : Author(s): P.N. Trathan, V. Warwick-Evans, J. Hinke, E.F. Young, A.P.B. Carneiro, M.P. Dias, K. Kovacs, O.R. Godø and M. Santos