Résultats de la recherche

1. On reproduction of Electrona carlsbergi (Tåning)

   of the Southern Ocean. From materials available it has been ascertained that E. carlsbergi spawns in ... synchronous. Vitelline eggs have a diameter from 150 to 650 μm; in hydrated oocytes it is up to 900 μm ... summer/autumn in the Southern Hemisphere. File:  23-Mazhirina.pdf ... . Magnification - 20 x 10. Figure 2: E. carlsbergi ovary at maturity stage VI-VIII. Residual follicle in the ... centre. Older oocytes in phase of intensive trophoplasmatic growth. Magnification - 20 x 10. 405 ... stage IT. Older oocytes in monolayer follicle phase. Magnification - 20 x 10. Figure 5: E. carlsbergi ... WG-FSA-90/20 ON REPRODUCTION OF ELECTRONA CARLSBERGI ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Auteur(s): Mazhirina, G.P.

2. Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias

   programs. The methods that have been used in CCAMLR tag-recapture programs to mitigate such biases, or to ... account for their effects in stock assessments for Dissostichus spp. are also summarised. In nearly all ... mawsoni) in the Ross Sea for the years 1997–98 to 2010–11. Document WG-FSA-11/42. CCAMLR, Hobart ... estimates of population size. In the CCAMLR area, tagging programs have existed in some fisheries for ... vessels commenced in the fishery at Heard Island and the McDonald Islands (Division 58.5.2) in 1998 ... (Williams et al., 2002) and at South Georgia (Subareas 48.3) and in the Ross Sea (Subarea 88.1) in 2000 ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Auteur(s): Welsford, D.C. and P.E. Ziegler

3. Results of fish larvae sampling by means of fine-meshed samplers attached to a bottom trawl

   bottom trawl Abstract / Description:  Fine-meshed samplers were attached to the top of a bottom trawl in ... order to provide information on the composition, distribution and abundance of Antarctic fish larvae in ... sized meshes for sampling larvae in the bottom zone and the resistance of the samplers to damage during ... , more vulnerable to damage. The nets were more effective in sampling when attached to the top of the ... abundance of postlarval fish was highest in hauls 20, 22 and 36, which were carried out in the shallow (108 ... : 134 p. 73 Table 1: Station 19 20 22 24 25 26 30 31 32 33 34 35 36 37 38 45 ... WG-FSA-88/20 RESULTS OF FISH LARVAE SAMPLING BY MEANS ... -meshed samplers were attached to the top of a bottom trawl in order to provide information on the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 69-86 : Auteur(s): Ślósarczyk, W. and I. Wójcik

4. A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region

   – Antarctic Peninsula region Abstract / Description:  Expansion of the krill fishery in the Scotia Sea ... compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods. These ... species that feed on krill in this region. Maximum krill transport rates are also derived from the OCCAM ... are provided where possible. The results suggest that fish are the major krill consumers in all SSMUs ... mortality rate (Table 9). In addition, a substantial proportion of adult females do not breed each year ... biomass ratios from 2 year–1 in whales to 103 year–1 in penguins. Discussion This paper compiles ... are usually in the summer months. Extrapolating from these to other parts of the year also ... krill in one year. The total demand was divided equally between summer and winter. Whales W1. The ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Auteur(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters

5. Brief comments on the simulation study made by Professor Butterworth on krill fishing by an individual Japanese trawler

   fishing by an individual Japanese trawler Abstract / Description:  In this paper, three essential ... questions are raised concerning the simulation study of the Japanese krill fishery carried out by ... values used for the minimum catch rate per overall elapsed time. It is suggested that an improvement in ... Abstract In this paper, three essential questions are raised concerning the simulation study of the ... elapsed time. It is suggested that an improvement in our knowledge of krill distribution is necessary ... -concentration searching times might improve the utility of the data. We commend his efforts in making the ... fishery are useful in estimating the change of within-concentration krill abundance even if searching ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 347–350 : Auteur(s): Ichii, T. and Y. Endo

6. Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf

   been taken mainly in depths greater than 800 m from three localised fishing grounds of deep water off ... Terra Nova Bay, Ross Island, and in the south of small-scale research unit (SSRU) 881L (adjacent to the ... in the southern Ross Sea were sub-adult and maturing fish, typically ranging from 60–130 cm in length ... available, there is no evidence for a northward contraction in the range of D. mawsoni over the course of ... for all years up to, and includ- ing, the 2007/08 fishing year. The observer data used in this report ... caught in each of the three grounds, for years where more than 10 sets were completed, is shown by year ... was carried out during a 2–3 week period in January of each year. The Ross Island ground lies in ... fishing was car- ried out during a two-week period in January of that year. The third main fishing ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Auteur(s): Hanchet, S.M., S. Mormede and A. Dunn

7. Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution

   model in predicting class/bin by year frequencies is used to obtain a single, across-years, over ... random variation across years in one of the selectivity function parameters and similarly for the ... ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... year is important for such assessments, and this issue is studied using simulation. Between-haul ... , but in this case, declining from 196 939 for year 1 to 3 061 for year 20 with a value of 100 000 at ... sampling of the population age structure. For each of the 20 years in a replicate, catch-at- age ... of fit of the age- structured model in predicting class/bin by year frequencies is used to obtain a ... from a large number of fish sam- pled randomly from hauls in each year of fishing. The CASAL ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Auteur(s): Candy, S.G

8. Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)

   South Georgia (Subarea 48.3) Abstract / Description:  Krill distribution in the South Georgia area and ... many aspects of its variability have been extensively described in scientific literature. A summary of ... recent findings is discussed in this paper. There has been less focus on data concerning krill biomass ... assessments. The existing uncertainty in krill biomass assessment can be largely attributed to high ... here in almost all months of the year although spring research did not uncover any particularly large ... whole year depend upon the variability of water dynamics in the mesoscale. Variability associated with ... seasonal and interannual fluctuations in this area. Even surveys carried out more than once a year do not ... period of a year. It should be noted that the discovery of the most common places of kri11 swarming in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Auteur(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin

9. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

   successful measures to reduce the incidental mortality of seabirds in most of the fisheries within its ... and petrels in the CCAMLR Convention Area to inform the CCAMLR risk-assessment process. Albatross and ... petrel distribution is analysed in terms of its division into FAO areas, subareas, divisions and ... including areas managed by CCSBT, ICCAT, IOTC and WCPFC. Priority gaps in current tracking data are ... supported by at-sea records collected over a 19-year period from 1981 to 1999 (Woehler et al., 1999). In ... . Distribution of breed- ing birds in relation to year ... the incidental mortality of seabirds in most of the fisheries within its jurisdiction, and has done ... ) fishing. This paper presents an analysis of the distribution of albatrosses and petrels in the CCAMLR ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)

10. Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends

    . It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... used in fishing for them requires further research. It should first of all cover twine codends with a ... tapes with a thickness of 3.5 mm and a width of 20 mm. The meshes of this codend were rectangular in ... presented in Figure 20. The selection interval for Notothenia kempi was 3.8 cm. A 50% selection level was ... - 20 - with the curve for South Orkney Island, where fish were diversified in length. The main ... measured Mean (mm) After 20 hours 60.7 Changes in mesh Before use Dry Wet 98.0 100.9 After ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Auteur(s): Zaucha, J.

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