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1. An evaluation of reduced target strength estimates reported for krill (Euphausia superba)

   on the same experiment and report new calculations of the target strength of krill (Euphausia superba ... ) that propose questioning previous measurements of krill target strength and estimates of abundance ... important, given that they are being cited as a basis for increasing the estimates of krill standing stock ... dependent bias (correlation of target strength of an individual krill on the number of krill used to measure ...

   Meeting Document : WG-KRILL-90/13 : Автор(ы): M.C. Macaulay (USA)

2. Possible approaches to the evaluation of the Antarctic krill mortality

   the base of summaryed data on Krill age groups singled out using method of Harding.Parameters obtained ... were used to calculate total Krill mortality using different methods applyed earlier only to the fish ... most real values varied from 0.75 to 1,17. No fishery impact on various parameters of the krill ... approaches to the evaluation of the Antarctic krill mortality Approval:  Approved ...

   Meeting Document : WG-KRILL-92/08 : Автор(ы): L.G. Maklygin and V.I. Latogursky (Russia)

3. Some comments on the procedure for testing estimators of krill abundance which utilise survey data

   Abstract:  Since krill distributional data do show evidence of spatial correlation, estimators of ... performance in practice. Such studies require a simple method for computer generation of krill distribution ... " models of krill distribution are considered. These achieve overall spatial correlation by placing ... krill swarms at random within larger aggregation features termed concentrations; these concentrations ...

   Meeting Document : WG-KRILL-91/21 : Автор(ы): D.S. Butterworth, D.L. Borchers and D.G.M. Miller (South Africa)

4. CPUEs and body length of Antarctic krill within commercial hauls of polish trawler FV Lepus in the fishing ground off South Orkneys in January and February 1991

   Abstract:  Length composition of krill in diurnal and night hauls of FV Lepus, off S. Orkneys in ... January and February 1991, generally show similar pattern. The proportion of bigger individuals of krill ... than those in January. No larval fish were recorded in krill catches. Only few specimens of Electrona ... . Zaporowski (Poland) Title:  CPUEs and body length of Antarctic krill within commercial hauls of polish ...

   Meeting Document : WG-KRILL-91/37 : Автор(ы): I. Wójcik and R. Zaporowski (Poland)

5. Estimating krill recruitment and its variabiliity

   Abstract:  A maximum likelihood method is developed for the decomposition of krill density at ... Southern Ocean give a mean recruitment rate for one year old krill of 0.339 with a standard deviation of ... 0.100. The corresponding results for two year old krill from 9 surveys are 0.552 and standard deviation ... (Australia) Title:  Estimating krill recruitment and its variabiliity Approval:  Approved ...

   Meeting Document : WG-KRILL-93/12 : Автор(ы): W. de la Mare (Australia)

6. Change of sex ratio of krill (Euphausia superba) from austral early summer to midsummer in 1983/84 in the vicinity of Prydz Bay, Antarctica

   Abstract:  In this present report the change of the Antarctic krill distribution pattern from ... waters indicating the high ratios of female krill with the high coefficient of fatness were considered to ... be suitable spawning grounds for krill. These waters were characterized by the remarkable Shelf Slope ... :  Change of sex ratio of krill (Euphausia superba) from austral early summer to midsummer in 1983/84 in the ...

   Meeting Document : WG-Krill-94/30 : Автор(ы): M. Naganobu and S. Kawaguchi (Japan)

7. Krill length and age at maturity

   calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 ... mm for female krill are the best estimates for the high spawning season. Males attain sexual maturity ... identical for krill. Comparisons with length at age data show that females mature in the third year of the ... show knife-edge maturity. Author(s):  V. Siegel (Germany) and V. Loeb (USA) Title:  Krill length and ...

   Meeting Document : WG-KRILL-93/40 : Автор(ы): V. Siegel (Germany) and V. Loeb (USA)

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 ... of relatively high krill abundance. The mean surface density estimates of krill in 1991, 1992 and ... :  Estimation of the biomass of krill in Prydz Bay during January/February 1991, February/March 1992 and January ...

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

9. To the problem of assessment of probability of finding Antarctic krill concentrations in Division 58.4.2

   researches for creation of an imitation model of krill distribution and search in the Cooperation and ... Cosmonauts Seas (30–80°E). At this the following main problems were addressed:- Systematization of krill ... distribution of krill concentrations and catch size. Author(s):  V.N. Yakovlev, V.A. Bibik and L.M. Kokoz ... (Ukraine) Title:  To the problem of assessment of probability of finding Antarctic krill concentrations in ...

   Meeting Document : WG-Krill-94/7 Rev. 1 : Автор(ы): V.N. Yakovlev, V.A. Bibik and L.M. Kokoz (Ukraine)

10. Yet further krill yield computations

    Abstract:  Preliminary computations are carried out for the krill yield model of Butterworth et al ... . (1993), adjusted as requested by the fifth meeting of WG-KRILL. This involves modifying the input ... the fishery, and higher natural mortality for younger ages of krill. Results do not differ greatly ... (s):  R.B. Thomson and D.S. Butterworth (South Africa) Title:  Yet further krill yield computations ...

    Meeting Document : WG-Krill-94/23 : Автор(ы): R.B. Thomson and D.S. Butterworth (South Africa)

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