Search results
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Biological features of the icefish Champsocephalus gunnari from commercial catches in Subarea 48.3 during the period from 8 December 1999 until 31 January 2000
western shelf of the South Georgia Island. Icefish 26-40 cm in length, with the average size of 30.3 cm ... made up the bulk of the catches. Length-frequency distribution was characterized by bimodality, with ... frequency peaks under 27-29 and 33 cm for fish aged 3 and 4 years. The by-catch of small size ... Champsocephalus gunnari (with the length of 24 cm and less) amounted to, on the average, 0.6% per a haul. The male ...
Meeting Document : WG-FSA-00/20 : Author(s): V.L. Senioukov (Russia)
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Relative abundance of large whales around South Georgia
Abstract: To assess large whale stocks following the cessation of land-based South Georgia ... Island (NW of South Georgia) between 1979 and 1998, and mariner sightings between 1992 and 1997. All ... growing at 7% per annum. In contrast, blue and fin whales appear to be less abundant. A single blue whale ... mother-calf pair was observed off the Shag Rocks in February 1997. Extirpation of animals from this ...
Meeting Document : WG-EMM-99/34 : Author(s): M.J. Moore (USA), S.D. Berrow (UK), B.A. Jensen (USA), P. Carr (UK), R. Sears (Canada) and V.J. Rowntree, R. Payne and P.K. Hamilton (USA)
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A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
Abstract: A random stratified trawl survey of Mackerel icefish in 2 populations (Plateau and ... Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... in 1999 and 2000. While the abundances of icefish are lower in 1998 than in 1997, the Age 3 and Age 4 ... cohorts are still sufficiently strong to provide for a yield greater than estimates of the long term ...
Meeting Document : WG-FSA-98/54 : Author(s): A. Constable and D. Williams (Australia)
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Hatching season and growth of Pleuragramma antarcticum larvae near the Antarctic peninsula in austral summer 1993/94
Abstract: Hatching season and larval growth of Pleuragramma antacticum in the water off Antarctic ... Peninsula were determined by the examination of growth increments in otoliths. The samples were collected by ... (54 inds. out of 77 fish larvae) in ichthyoplankton samples, and occurred mainly in cold water of the ... Weddell Sea. Body length of P. antacticum ranged from 12.0 to 67.3 mm. Otolith radii (R) ranged from 150 ...
Meeting Document : WG-EMM-96/65 : Author(s): Cha, S.S., Lee, T.W., Kim, S.
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A simulation approach to the evaluation of recruitment surveys for D. eleginoides for the Heard Island Plateau region (Division 58.5.2)
Abstract: Assessments of long-term sustainable yield using the Generalised Yield Model (GYM) and ... the setting of total allowable catches (TAC) for Patagonian Toothfish, Dissostichus eleginoides, for ... . Evaluation of both the current RSTS design for Division 58.5.2 and some options for future modifications of ... . Census of fish stocks by age class were compared to population estimates based on simulated RSTS hauls ...
Meeting Document : WG-FSA-04/74 : Author(s): S.G. Candy, C.R. Davies and A.J. Constable (Australia)
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An initial examination of using CPUE as a fishery performance index for the krill fishery
Abstract: Early analyses of CPUE in the krill fishery concluded that it was not a useful index of ... krill abundance. However, understanding the factors effecting the operation of the krill fishery and the ... extent to which these reflect changes in krill abundance are key elements of developing feedback ... management of the krill fishery. This analysis reviewed catch and effort data from the krill fishery for the ...
Meeting Document : WG-EMM-16/10 : Author(s): CCAMLR Secretariat
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Estimates of global krill abundance based on recent acoustic density measurements and their implications for the calculation of precautionary catch limits and the designation of management areas
between 64 and 137 million tonnes- at the low end of values that have been suggested in the past. The ... Abstract: The global abundance of krill is estimated using recent estimates of krill density from ... acoustic surveys and historical information on the overall range of krill. The biomass estimates fall ... differences between our estimates and others can be explained by a number of factors such as: an ...
Meeting Document : WG-EMM-99/22 : Author(s): S. Nicol, A. Constable and T. Pauly (Australia)
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Risk maps for Antarctic krill under projected Southern Ocean acidification
Abstract: The embryonic development of Antarctic krill (Euphausia superba) is sensitive to ... elevated seawater CO 2 levels and successful hatching is impaired at CO 2 levels greater than 1000 μatm ... . Exposure to elevated CO 2 during the first 3 days of embryonic development significantly retards subsequent ... development even if the embryos are transferred to seawater with current levels of CO 2. Krill embryos appear ...
Meeting Document : WG-EMM-14/P06 : Author(s): S. Kawaguchi, A. Ishida, R. King, B. Raymond, N. Waller, A. Constable, S. Nicol, M. Wakit and A. Ishimatsu
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Interannual variability of standardised index of krill abundance in Area 48 according to CCAMLR fishery statistics database
of fishery at the scale of Area 48, Subareas 48.1-48.3, SSMUs and years using CAMLR statistical ... Abstract: Standardization of fishing effort on the basis of the generalized linear models with ... mixed effect (GLMM) allows to the authors to analyze the specific character of the spatial distribution ... database. The interannual variability of the standardized CPUE related to the fishery performance was ...
Meeting Document : WG-EMM-10/17 : Author(s): P.S. Gasyukov and S.M. Kasatkina (Russia)
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ESTIMATION OF IUU CATCHES OF TOOTHFISH INSIDE THE CONVENTION AREA DURING THE 2009/10 FISHING SEASON
was also requested to provide revised estimates for gillnet catches for previous years and estimates of IUU ... is available, eg. information from IUU vessels. 2. At CCAMLR-XXVIII, the Secretariat was also requested ...
Meeting Document : WG-FSA-10/06 : Author(s): Secretariat