Search results
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07
Abstract: The descriptive analyses of the toothfish tagging programme carried out in Subareas ... 2007 meeting of WG-SAM by including revised data and data from non-New Zealand vessels that fished in ... , and 911 Patagonian toothfish released and 43 recaptured since 2001. The number of tags recaptured in ... the Ross Sea in 2007 by New Zealand vessels was the highest annual recapture to date and double the ...
Meeting Document : WG-FSA-07/40 : Author(s): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)
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Fish and invertebrate by-catch from Australian fisheries for D. eleginoides and C. gunnari in Division 58.5.2
Islands in CCAMLR Statistical Division 58.5.2. These comprise a trawl and a longline fishery for the ... . Preliminary results from a rajid tagging program are also presented. Total removals of by-catch in the trawl ... caught in the D. eleginoides trawl fishery and 107 tonnes in the C. gunnari trawl fishery. These values ... represent less than 1% and 2% respectively, of the total catch weight (target and non-target species) in ...
Meeting Document : WG-FSA-03/73 : Author(s): E.M. van Wijk and R. Williams (Australia)
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Characteristics of krill aggregations in 48.4 subdivision during January–February 2000
Abstract: It has been showed that krill spatial distribution in 48.4 Subarea was characterized by ... type in relation to water mass structure and dynamics. The distributional features and physical ... characteristics of some 2400 krill swarms detected and sized acoustically in the study area have been described ... . Comparative results have been given between swarm parameter means in different areas and seasons. There has ...
Meeting Document : WG-EMM-01/42 : Author(s): S.M. Kasatkina, A.P. Malyshko, V.N.Shnar and O.A. Berezhinskiy (Russia)
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Distribution and some biological features of icefish (Champsocephalus gunnari) at different life cycle stages in the South Georgia subarea
fish distribution at different stages of physiological state. Juvenile fish mainly distribute in the ... south, immature fish- in the cast and southwest, while adult at the north of the shelf. It was revealed ... migrations: young fish above 4 cm in length distribute within 75 cm from the bottom, and migrate into the ... less depths in the day-time and to the bottom at night. Immature fish distribute in the water column ...
Meeting Document : WG-FSA-99/65 : Author(s): Zh.A. Frolkina (Russia)
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A CHARACTERISATION OF THE TOOTHFISH FISHERY IN SUBAREAS 88.1 AND 88.2 FROM 1997/98 TO 2008/09
Abstract: The exploratory fishery for Dissostichus spp. has now been operating for 13 years in ... Subarea 88.1 and for 8 years in Subarea 88.2. During that time a large amount of distributional and ... characterise the general fishing patterns over time and, in particular, to identify possible changes to the ... in depth/location of fishing, and length and age structure of the population. The catch limit was ...
Meeting Document : WG-FSA-09/36 : Author(s): S.M. Hanchet, A. Dunn and S. Mormede (New Zealand)
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Revised proposal to continue the time series of research surveys to monitor abundance of Antarctic toothfish in the southern Ross Sea, 2016 and 2017
estimating the relative abundance of sub-adult (<110 cm TL) toothfish in the core strata (A, B, C) in ... developed to monitor larger (sub-adult and adult) toothfish in McMurdo Sound and Terra Nova Bay, where ... , Italian and New Zealand scientists in these two areas. It is proposed to survey McMurdo Sound in 2016 and ... Terra Nova Bay in 2017 to match the timing and location of the sea-ice based work. Survey timing and ...
Meeting Document : WG-FSA-15/34 : Author(s): S.M. Hanchet, S.J. Parker, S. Mormede and R.J.C. Currey (New Zealand)
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
Abstract: South Africa and Japan made the next season’s (2016/17) research plan in Subarea 48.6 ... abnormal data for the two vessels in block 48.6_2, therefore we removed the data for the current analysis ... distribution of sizes, GSI and Fulton’s condition factors for D. mawsoni in Subarea 48.6 suggest that northward ... estimate the biomasses of D. mawsoni because the recaptures were concentrated in the southern area. In ...
Meeting Document : WG-SAM-16/07 : Author(s): Delegations of Japan and South Africa
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Reproductive ecology of Antarctic toothfish, Dissostichus mawsoni (Norman, 1937) (Actinopterygii: Nototheniidae), in the Antarctic waters (SSRUs 58 and 88)
Abstract: Total numbers of Antarctic toothfish collected in the CCAMLR Conservation Zone were 600 ... March, 2016. Female ratios were found to be 0.49 in both areas, showing higher female occurrence with ... was found to be 0.53, and displayed the tendency of increase with increase in the total length 140 cm ... . The type of ovarian development of Antarctic toothfish was group-synchronous type. The results in 2016 ...
Meeting Document : WG-FSA-18/65 : Author(s): J.-W. Kim, S.-G. Choi, S. Chung and D.H. An
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DEFINING TAG RATES AND TACS TO OBTAIN SUITABLY PRECISE ABUNDANCE ESTIMATES FOR NEW AND EXPLORATORY FISHERIES IN THE CCAMLR CONVENTION AREA
catches (TACs) that would be expected to yield a pre-specified precision in a resultant abundance estimate ... formula that gives the expected coefficient of variation of the abundance estimate in terms of the number ... of releases and recaptures, which can in turn be expressed in terms of the tagging rate per tonne ... be extremely useful in terms of defining suitable catch levels and tagging rates required to obtain a ...
Meeting Document : WG-SAM-08/06 : Author(s): R.M. Hillary (UK)
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Modelling growth and reproduction of Antarctic krill: implications of spatial and temporal trends in temperature and food for ecosystem-based management of krill fisheries
Abstract: Errors in the growth model used in stock assessments of Antarctic krill, specifically ... higher rates of growth than occur in reality, could inadvertantly lead to over-exploitation of the krill ... generally applied under spatially and temporally varying conditions. In the context of assessments of ... precautionary yield for krill in CCAMLR, we recommend that this new model be incorporated into those assessments ...
Meeting Document : WG-EMM-12/38 : Author(s): A.J. Constable and S. Kawaguchi (Australia)