Résultats de la recherche
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Shedding new light on the life cycle of mackerel icefish in the Southern Ocean
Abstract: Mackerel icefish (Champsocephalus gunnari) has a widespread distribution in the ... Atlantic and Indian Ocean sectors of the low-Antarctic region. Biological characteristics differ ... considerably between populations in the southern Scotia Arc and those living further to the north. Fish living ... in the north mature one year earlier than in the south. They have a much shorter life span and die ...
Meeting Document : WG-EMM-03/4 : Auteur(s): K.-H. Kock (Germany) and I. Everson (United Kingdom)
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A revision of yield and catch controls for managing the mackerel icefish (Champsocephalus gunnari) fishery in the vicinity of Heard Island and McDonald Islands
Abstract: A recent 2000 survey of mackerel icefish in the vicinity of Heard Island enabled a ... revised estimate of yield for the coming 2 seasons. While the biomass of icefish appears lower than in ... previous years, it is dominated by a strong age 2 year class. Estimates of yield for the Heard Island ... Plateau population using the short-term assessment are 1150 tonnes for 2000/01 and 1000 tonnes for 2001/02 ...
Meeting Document : WG-FSA-00/41 : Auteur(s): A. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Studies on zooplankton with special reference to krill from the Indian Ocean sector of the Southern Ocean
that the present investigation site falls under potential krill fishing ground. Author(s): K.L. Bhat ... Abstract: Distribution, abundance and species composition of zooplankton collected during the ... 303.62m1./100m-3 (x=142.14±77.02). High standing stock values were recorded in the study area where ... copepods, chaetognaths, euphausiids and salps were the dominant taxa. Copepoda formed the major constituent ...
Meeting Document : WG-EMM-98/35 : Auteur(s): K.L. Bhat, R. Vijayakumar and V. Jaya Sree (India)
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STANDING STOCK, SPATIAL DISTRIBUTION, AND BIOLOGICAL FEATURES OF DEMERSAL FINFISH FROM THE 2009 U.S. AMLR BOTTOM TRAWL SURVEY OF THE SOUTH ORKNEY ISLANDS (SUBAREA 48.2)
48.2) demersal finfish was completed during February-March, 2009 during the U.S. AMLR Program field ... season. Detailed information is presented for several of the most abundant demersal finfish species ... biomass within the 500 m isobath of South Orkney Islands. Spatial distribution of standardized finfish ... densities demonstrated substantial contrast across the shelf area, with most finfish biomass occurring on ...
Meeting Document : WG-FSA-09/19 : Auteur(s): C.D. Jones (USA) and K.-H. Kock (Germany)
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On the status of mesopelagic fish (myctophidae) in the Southern Ocean ecosystem
Abstract: Analysis and synthesis of results of Russian and foreign research into the trophic ... relationships of myctophids demonstrate that this group of mesopelagic fish plays a significant role in the ... community of marine organisms of the Southern Ocean. The trophic status of myctophids has been determined ... determines their high abundance and biomass. Thus, according to a preliminary estimate the yearly consumption ...
Meeting Document : WG-FSA-93/17 : Auteur(s): A.N. Kozlov (Russia)
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
Abstract: Acoustic surveys carried out in summer and autumn periods of 1987-1989 estimated the ... biomass of myctophids in the Atlantic sector of the Southern Ocean over the region between 48° and 56°S ... and from 8° to 48W at about 1.7 mill.t. Over the larger part of the surveyed area the fish were sparse ... over only restricted areas. The bulk of the biomass has been reported from the region of the Antarctic ...
Meeting Document : WG-FSA-90/19 : Auteur(s): A.A. Filin, K.V. Gorchinsky and V.M. Kiseleva (USSR)
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Considerations on the design and evaluation of surveys for estimating recruitment of Patagonian toothfish (Dissostichus eleginoides) with preliminary outcomes for the Heard Island plateau region (Division 58.5.2)
Abstract: Assessments of long-term sustainable yield using the Generalised Yield Model and the ... setting of total allowable catches (TAC) for Patagonian Toothfish, Dissostichus eleginoides, for the Heard ... surveys (RSTS) and from targeted commercial fishing operations via an observer program. The current RSTS ... for a range of levels of confidence. The results indicate that while the current and previous survey ...
Meeting Document : WG-FSA-SAM-04/19 : Auteur(s): Candy, S., Constable, A.J., Davies, C.R.
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An overview of the elasmobranch fish of the Southern Ocean
Abstract: This review summarises current knowledge of the elasmobranch fish occurring in the ... Antarctic and sub-Antarctic waters of the CCAMLR area. About 14–15 species of elasmobranch have been ... recorded, with skates (Rajiformes) the most speciose order. Two genera of skates are known (Amblyraja and ... Bathyraja), although the current taxonomic knowledge of some species or species-groups is incomplete. Five ...
Meeting Document : WG-FSA-13/28 : Auteur(s): J.R. Ellis, S.R. McCully, V.V. Laptikhovsky and R. Scott (United Kingdom)
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Preliminary results of the third CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2014
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The ... first survey was completed in February 2012 (), and the second survey was completed in February 2013 ... (Parker et al. 2013). In this paper we provide preliminary results of the third survey in the time series ...
Meeting Document : WG-SAM-14/24 : Auteur(s): S. Mormede, S.J. Parker, S.M. Hanchet, A. Dunn (New Zealand) and S. Gregory (United Kingdom)
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Exploring variability in the locations used by the krill fishery in Area 48 in relation to intra- and inter-annual variability in seasonal sea ice
Abstract: We present preliminary analyses of krill fishery catch data covering the period ... rapidly from mid May, often extending to cover the whole core fishing area, forcing the fishery to ... relocate by late June. Much of the effort relocates to Subarea 48.3, where the shelf and shelf-break ... fishing areas are normally ice free throughout the winter. In Subarea 48.1 ice cover begins to increase ...
Meeting Document : WG-EMM-14/11 : Auteur(s): J. Silk, S.L. Hill and P.N. Trathan (United Kingdom)