Résultats de la recherche

1. A comparison of Antarctic krill (Euphausia superba Dana) caught by nets and taken by macaroni penguins (Eudyptes chrysolophus Brandt): evidence for selection?

   , we examined the potential selection of different length and maturity stages of Antarctic krill ... probability of obtaining length-frequency distributions of krill different from that obtained from the net ... samples. The krill taken by the macaroni penguins differed significantly from those caught in the nets ... . Small krill (28 to 38 mm) were absent from the stomach samples, whereas large krill (58 to 62 mm) were ...

   Meeting Document : WG-EMM-96/08 : Auteur(s): Croxall, J.P., Hill, H.J., Trathan, P.N., Watkins, J.L.

2. Krill length frequency distribution in Subarea 48.3 in January–April 1988 in relation to sources of its origin

   Abstract:  Krill length frequency distribution through subarea 48.3 in 1988 January-February is ... considered in the frame of hypothesis of krill resources forming from two sources: Antarctic Circumpolar ... Current and Weddell Scotia Sea water flow. It is shown, that small krill with the mode of about 33 mm is ... distance of about 30-60 miles, beyond boundary zone occurs larger krill with the mode of about 49 mm. Krill ...

   Meeting Document : WG-EMM-03/40 : Auteur(s): F.F. Litvinov, V.N. Shnar, A.V. Zimin and V.V. Lidvanov (Russia)

3. Using carapace measurements to determine the sex of Antarctic krill (Euphausia superba)

   Abstract:  Krill carapaces measurements have been used to reconstruct krill length frequencies in ... allometric equations for calculating total length from carapace length, were derived from South Georgia krill ... have not been validated using locally sampled krill. This study reports on a three year study ... validating the use of discriminant functions to determine sex of krill based on carapace length and width and ...

   Meeting Document : WG-EMM-05/26 : Auteur(s): J.D. Lipsky, M.E. Goebel, C.S. Reiss and V. Loeb (USA)

4. Investigations on midwater trawling for krill (Euphausia superba) in the Southern Ocean

   . This included 5637 kg Antarctic krill (Euphausia superba), 6738 kg salps, 35 kg jelly fish, 12 kg krill ... juveniles, 2.2 kg lantern fish, 5.7 kg squid and 2.7 kg other fishes. Krill constituted 46 per cent of the ... Abstract:  Results of harvesting operations for Antarctic krill (Euphausia superba) in Fishing ... Area 58 in the Indian Ocean Sector of Southern Ocean, during the First Indian Antarctic Krill ...

   Meeting Document : WG-EMM-98/38 : Auteur(s): M.R. Bhoopendranath, M.K.R. Nair, A. Anrose and V.C. George (India)

5. Predicting changes in the Antarctic krill Euphausia superba population at South Georgia

   of Antarctic krill Euphausia superba and subsequent effects on dependent predators. However, the ... nature and consequences of changes in krill population dynamics that accompany l1uctuations in its ... abundance are essentially unknown. A conceptual model, developed froll1 quantitative measures of krill ... the abundance and population structure of krill in 1998 and the consequences for predators. Consistent ...

   Meeting Document : WG-EMM-99/37 : Auteur(s): K. Reid, K.E. Barlow, J.P. Croxall and R.I. Taylor (UnitedKingdom)

6. Krill biomass and distribution in Subarea 48.2 during summer 1996

   Abstract:  The results of hydroacoustic survey of krill biomass assessment in Subarea 48.2 ... presented. Taking in account close relation of krill and oceanographic structure of waters and currents ... , hydrorological conditions during surveys are also discussed in the paper. Average weighed density of krill in the ... study area amounted to 17 g/sq.m, obtained on the basis of diurnal surveys, and average weighted krill ...

   Meeting Document : WG-EMM-97/49 : Auteur(s): Kasatkina, S.M., Abramov, A.M., Polischuk, M.I., Sushin, V.A.

7. 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 ... have been revealed differences between spatial distribution patterns of krill aggregations of different ... characteristics of some 2400 krill swarms detected and sized acoustically in the study area have been described ... been made an analysis of krill biomass horizontal and vertical distributions in the study area in ...

   Meeting Document : WG-EMM-01/42 : Auteur(s): S.M. Kasatkina, A.P. Malyshko, V.N.Shnar and O.A. Berezhinskiy (Russia)

8. Feeding behaviour of Antarctic krill on salps

   Abstract:  Feeding behavior of Antarctic krill (Euphausia superba) on salps was observed through ... 1 salp/krill/day. Among 4 items of ethanol extracts; salps, phytoplankton, krill, and polychaets ... , krill preferred salps best. This evidence implies that the substances extracted from salps were most ... attractive to krill. The result of our experiment might indicate a tight ecological relationship between ...

   Meeting Document : WG-EMM-95/57 : Auteur(s): Takahashi, Y., Kawaguchi, S.

9. On the possibility of practical utilisation of krill target strength TS in situ obtained on the basis of EK-500 measurements

   Abstract:  Comparative analysis of krill length distribution in the echosurvey area, obtained with ... trawl and acoustic methods is presented. Besides, the acoustic estimate of krill length composition was ... situ at the frequency of 120 kHz as measured with echosounder EK-500 (split-beam) principle). Krill was ... caught with the commercial trawl RT 741448. It was shown that differences between krill length ...

   Meeting Document : WG-EMM-98/19 : Auteur(s): S.M. Kasatkina (Russia)

10. Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring

    Abstract:  The condition and survival of Antarctic krill (Euphausia superba) strongly depends on ... sea ice during winter. How krill utilize sea ice depends on several factors such as region and ... developmental stage. A comprehensive understanding of sea ice habitat use by krill, however, remains largely ... unknown. The aim of this study was to improve the understanding of the krill's interaction with the ...

    Meeting Document : WG-EMM-16/P16 : Auteur(s): F. Schaafsma, C. David, E. Pakhomov, B. Hunt, B. Lange, H. Flores, J.A. van Franeker

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