Résultats de la recherche

1. Estimating krill recruitment and its variability

   rate for 1+ krill (the ratio of the number of krill aged one year to the number of krill aged one year ... for 2+ krill (the ratio of the number of two-year-old krill to the number aged two and above) from ... likelihood method is developed for the decomposition of krill density-at-length data into the proportion of ... and above) of 0.339 with a standard deviation (SD) of 0.100. The corresponding result for recruitment ... with R(t) estimated for both putative one- and two-year-old age classes. above data, and four age ... Estimating Krill Recruitment and its Variability 20 30 40 50 60 Length (mm) 100 90 Nella Dan: ADBEX I ... o 80 8 70 * 60 .$ : 5 30 D 20 10 0 Figure 7: The fit of mixture distributions to ... in those years, or the survey results are not representative for this age class. If the former is ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Auteur(s): de la Mare, W.K

2. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

   Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... , subareas and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal ... Bayesian model. For both krill length and by-catch fish number, vessel sample size shows marked effects on ... the coefficient of variation (CV), although haul sample size affects CV for only krill length data up ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im at ... Year E st im at ed m ea n le ng th (m m ) 60 50 40 30 20 (c) Adult size in Subarea ... 40 30 20 (e) Year Area Y–A Ves. Cruise Haul Ind. Va ria ... deploying an observer but also of the time budget for the observer because scientific observers are ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota

3. Trawl bag selectivity in the Champsocephalus gunnari fishery

   and the selectivity factor was 3.10 for a mesh size of 80 mm. Comparison of these results with results ... to the limited time available for experiments, should be considered as preliminary. L 50% was 24.8 cm ... from previous years demonstrates close similarity. A significant increase in modal length (up to 34-35 ... was 3.10 for a mesh size of 80 mm. Comparison of these results with results from previous years ... AND AREA Selectivity hauls were made from 17 to 20 June 1990 in an area having the mean coordinates ... - 7 19 - 16 20 30 38 21 - 20 22 - 20 23 - 24 24 38 64 25 534 373 26 1436 866 27 2984 1430 28 ... , it is attached for this reason. A more open mesh is less tense and allows fish to pass through more ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 295–312 : Auteur(s): Bidenko, V.G. and I.G. Istomin

4. Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87

   recruiting an abundant year-class to the exploited stock. The biomass of other bottom species is more stable ... biomass density of C. gunnari stock. High biomass density appeared with 2-4 year intervals after ... , especially in the case of N. gibberifrons. Recently, an increase in the C. aceratus stock has been observed ... recruiting an abundant year-class to the exploited stock. The biomass of other bottom species is more ... seasons (Table Ill). Prior to the 1977;78 seaons, large fish with lengths of 30-65 cm, age-groups ... ; strong year classes of 1976, 1977, and 1978 were recruited to the stock. At that time young fish, age ... , mostly from age-groups V and VI (year classes of 1977 and 1978). Higher biomass density in 1984/85 may ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Auteur(s): Mucha, M. and W. Ślósarczyk

5. Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987

   Heard were favourable for the formation of commercial aggregations of Champsocephalus gunnari during the ... weight c) collection of otoliths and scales for, age determination d) determination of sex and sexual ... in size with depth was detected. Immature, never spawned fish prevailed (females 80%, males 90 ... females and 0.3% for males . Of the analysed fish, 80% had food present in their stomach. The mean ... , Beverton and Holt model for the Kerguelen Archipelago Shelf population of C. gunnari which equals 30 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Auteur(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba

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

   sized meshes for sampling larvae in the bottom zone and the resistance of the samplers to damage during ... 260 15P 110 * 90 240 122 340 * 540 250 123 190 * 220 70 124 50 * 320 320 127 50 * 680 80 130 20 ... larvae, but did not have an opportunity to review the draft of this paper and incorporate results of her ... : 134 p. 73 Table 1: Station 19 20 22 24 25 26 30 31 32 33 34 35 36 37 38 45 ... 46 300 660 1000 420 67 80 220 460 320 68 290 380 840 650 74 100 340 220 580 89 90 * 340 260 94 ...

   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

7. Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)

   valid method for determining the age of this species. In addition, sagittal otoliths were examined from ... in each consecutive mode. This indicates that the modes represented year classes and that one ... , 2.5 and 3.5 years were estimated to be 14, 28, 37 and 46 cm total length (TL) respectively. These ... fish younger than 3.5 years. Counting translucent zones in the otoliths of D. mawsoni appears to be a ... . 0 20 40 60 80 100 120 140 160 180 0 5 10 15 20 25 30 Age (years) To ta l l en gt h ... effect). Age at recapture for the six fi sh was estimated to be between 19 and 28 years (Table 2 ... is from 0.6 to 4.0 cm yr-1 for fi sh aged from 15 to 30 years. It is interesting that all the ... the otoliths of D. mawsoni appears to be a valid method for determining the age of this species. In ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Auteur(s): Horn, P.L., C.P. Sutton and A.L. DeVries

8. Chilean krill fishery: analysis of the 1991 season

   paper summarises Chilean catch data for 1991. Special emphasis is given to the analysis of haul-by-haul ... 100 co ...r 90 ctl Q) "- 80 ctl .0 ::J 70 Cl) 60 E 0 '-....... 50 .c () 40 ro () 30 ... for the year 1983, only in the Subarea 48.1, comprising from 5% to 100% of the kriU fishery in that ... potential impact of kriU fishing on other components of the Antarctic ecosystem. For the review, a ... ....... 0 Q) 20 O'l ctl -10 c Q) Q 0 "-Q) (L 1977 1979 1981 1983 1985 1987 1989 1991 Year \-e ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 273–287 : Auteur(s): Marín, V.H., A. Mujica and P. Eberhard

9. Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index

   Japanese krill fishery for the 1980/81 to 2003/04 fishing seasons were analysed. For a number of ... have some value as abundance indices. Standardised CPUE for the pelagic areas showed significant ... correlations with previously published interannual series of acoustic density estimates from scientific surveys ... vessels. It is also mportant to undertake the same kind of analysis for fleets from other fishing nations ... and TSDT for the whole of Area 48 across years. 0 1 2 3 4 5 6 7 8 9 10 19 80 /8 1 19 81 ... the patches). For example, even if local density is the same, if an aggregation is tighter rather ... CPUE indices for the whole of Area 48 across months. Kawaguchi et al. 6 CPT showed an increase ... considerable uncer- tainty regarding predictions for the September to Novem ber period. CPD showed an increase ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Auteur(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu

10. By-catch of fish in the krill fishery

    55 1335 1.16 75 9 2 60 23 46 18 780 600 70 100 1650 1.16 76 10 2 60 26 46 20 230 460 30 90 730 1.50 ... analysis. Numbers and weights of fish in these subsamples have been increased pro rata to give an ... 7 400 500 40 40 30 1745 1.83 71 20 4 54 14 35 18 250 470 545 2.25 86 10 5 55 0 33 47 3000 3000 70 ... 0.50 89 12 5 54 33 34 53 700 700 35 110 30 905 0.58 90 12 5 54 55 34 55 125 180 35 50 27 1700 0.50 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 381–401 : Auteur(s): Everson, I., A. Neyelov and Y.B. Permitin

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