Результаты поиска

1. Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G

   Abstract:  This paper frames a discussion for improving the assessment of toothfish abundance for ... SSRUs 88.2C–G. We initially provide a characterisation of the fishery and a summary of available tagging ... fish have been recaptured. It is likely that the lack of recaptures of tagged fish in this region has ... been caused primarily by the poor spatial overlap of released tagged fish with subsequent fishing ...

   Meeting Document : WG-FSA-14/59 : Автор(ы): S.M. Hanchet and S.J. Parker (New Zealand)

2. Plan of research program of the Russian Federation in Subarea 48.5

   Abstract:  Closed mostly within the Weddell Sea Subarea 48.5 is one of the closed data-poor CCAMLR ... subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... of the first and the second stage of this program. It highlights the Weddell Sea as one of the most ... promising area for exploratory fishery of Dissostichus sp. However, fishery in Subarea 48.5 is closed on the ...

   Meeting Document : WG-FSA-16/15 Rev. 1 : Автор(ы): Delegation of the Russian Federation

3. On the very high likelihood of bycatch of ice krill (Euphausia crystallorophias) in the present-day fishery for Antarctic krill (E. superba)

   , Scotland, June 2017) attended by representatives of the Association of Responsible Krill harvesting ... companies (ARK), the Marine Stewardship Council (MSC) and CCAMLR, it became apparent that no bycatch of Ice ... a condition of their fishing permits to report all bycatch. Since the present-day Antarctic krill ... fishery operates in geographic areas that overlap with the known range of Ice krill, that Ice krill and ...

   Meeting Document : WG-EMM-18/05 : Автор(ы): A.S. Brierley and R. Proud

4. Exploration of CPUE standardisation variances in the Ross Sea (Subareas 88.1 and 88.2A South of 70°s) Antarctic toothfish (Dissostichus mawsoni) exploratory longline fishery

   Abstract:  Catch rates or catch per unit of effort (CPUE) are used for data-poor exploratory ... interim of collecting sufficient tag recaptures. Here, we address the two questions: (1) which unit of ... such as gear type, vessel, fishing season, month, bait, fishing depth and area affect estimates of ... trend and magnitude of catch rates. Using data from the Ross Sea Antarctic toothfish fishery, we ...

   Meeting Document : WG-SAM-2019/25 : Автор(ы): D. Maschette, S. Wotherspoon and P. Ziegler

5. Alternative method of the age composition assessment on the basis of surveys length data using mixture distributions

   Abstract:  On the basis of the bottom trawl surveys carried out by Russia and Great Britain during ... bootstrap method result in different estimates of mean fish density in the length series. Verification of ... the hypothesis of non-zero observations lognormal distribution for a large number of length groups ... casts doubt on the correctness of the first method application and therefore also of the method by de la ...

   Meeting Document : WG-FSA-05/78 : Автор(ы): P. Gasyukov (Russia)

6. A comparison of densities and length distribution of the Champsocephalus gunnari stock in Subarea 48.3 between years 1994 and 1995

   Abstract:  Mean densities and length structure of Champsocephalus gunnari obttained in the 1994 ... determined by a search procedure yielding randomly selected clusters of stations located within the 50–150 ... design. Forty five stations in the first cruise and 48 in the second were analyzed. Of these, 51 pairs of ... depth strata in the South Georgia Islands shelf, while density remained stable at Shag Rocks. The fit of ...

   Meeting Document : WG-FSA-95/34 : Автор(ы): Marschoff, E., Calcagno, J., Gonzalez, B.

7. Evidence of two stocks of Champsocephalus gunnari in the South Georgia region, CCAMLR fishing Area 48.3

   Abstract:  In 1991, the 0 age-class of C. gunnari were sampled at Shag Rocks on 18 January, off ... Possession Bay, South Georgia during 19-20 January and off much of the north-east coast of South Georgia ... between to 19 January to 19 February. The size- frequency of fish at Shag Rocks contained two modes of 31 ... -46mm and 55-87mm SL. however, off Possession Bay only one mode of 25-57mm SL was apparent. Fish in ...

   Meeting Document : WG-FSA-94/16 : Автор(ы): A.W. North (United Kingdom)

8. Estimation of the biomass of krill in Prydz Bay during January/February 1991, February/March 1992 and January/ February 1993 using echo integration

   Abstract:  Hydroacoustic surveys of the abundance of krill (Euphausia superba) in the Prydz Bay ... surveys indicated some association of krill with the shelf break in the western part of the survey area ... and the centre of the Prydz Bay region but also found that the shelf break was in general not a region ... of relatively high krill abundance. The mean surface density estimates of krill in 1991, 1992 and ...

   Meeting Document : WG-Krill-94/21 : Автор(ы): T. Pauly and I. Higginbottom (Australia)

9. The distribution pattern and fishery for the Antarctic krill (Euphausia superba) off the Wilkes Land and Balleny Islands (with notes on the application of CPUE data as indices of krill abundance)

   Abstract:  Hydrological conditions, the distributiion pattern of krill and characteristics of the ... variability of some CPUE indeces (TC/TH/PPST; TC/TFISHT; TC/TFISHT/PPST) is analysed on the basis of data ... °- 150° E) are likely to be. an area of regular occurence of krill concentrations, probably the frequency ... of their occurence is the highest in the whole East Indian and West Pacific Anrarctic. This seems to ...

   Meeting Document : WG-KRILL-90/16 : Автор(ы): V.N. Dolzhenkov, E.A. Kovalev, V.A. Spiridonov, V.P. Timonin, I.A. Zhigalov (USSR)

10. Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries

    fishing industry provided funds to conduct high throughput ageing of toothfish otoliths. 5780 otoliths ... Island were processed. The inclusion of these datasets have improved the estimates of key parameters ... population dynamics of toothfish including growth rates, mean recruitment levels and interannual variability ... , as well as allowing more precise estimates of the selectivity of the different fishing gears used in ...

    Meeting Document : WG-FSA-12/P07 : Автор(ы): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins

Страницы