Résultats de la recherche

1. Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels

   Paper Title:  Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen ... toothfish (Dissostichus eleginoides) in the Crozet and Kerguelen Islands Exclusive Economic Zones (EEZs ... ) between 2003 and 2005. In the Crozet EEZ, the reported interactions involved killer whales and sperm ... whales. These two species, alone or in co-occurrence with each other, were observed in 71% of the 1 308 ... operated all year round, with the exception of February in the Kerguelen EEZ when the fi shery was closed ... underestimate of the depreda- tion level. In order to assess whether depredation rates vary through the year ... approximately US$2.1million/year in the Kerguelen EEZ. Crozet EEZ During the observation period in the ... interacting was 8.2 ± 4.7 (n = 552, range 1–20) and 4.1 ± 3.4 (n = 737, range 1–30) individuals respectively ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Auteur(s): Roche, C., C. Guinet, N. Gasco and G. Duhamel

2. A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica

   antarcticum) in the Ross Sea, Antarctica Abstract / Description:  Antarctic silverfish (Pleuragramma ... antarcticum) were sampled during a trawl survey in the Ross Sea, Antarctica. Biological data, including fish ... . Standard length and weight were well correlated (r 2 = 0.99). Counts of growth zones in 304 thin-sectioned ... from 4.6 to 22.9 cm. Pronounced modes in the length-frequency distribution occurred at 7.1–7.5, 10.6 ... measured fresh on board and again after one year stored frozen at –20°C did not differ in length. Von ... 5 6 7 8 9 10 11 12 13 14 Age (years) Fr eq ue nc y Age (years) Fr eq ue nc y 50 40 30 20 ... consecutive modes at 8–9, 30–40 and 50–70 mm in December, and assumed they rep- resented the 0+, 1+ and 2 ... + year classes. Hubold (1985) examined silverfish occurring in the eastern and southern Weddell Sea and ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Auteur(s): Sutton, C.P. and P.L. Horn

3. Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies

   Paper Title:  Interactions of Patagonian toothfish fisheries with killer and sperm whales in the ... pods were involved in 81.3% of the interactions. Significant variations of interaction rates with ... operating in the Crozet Islands EEZ. The vessels operated all year round with higher activ- ity in February ... Islands 0 10 20 30 40 50 60 70 80 90 100 2003/04 2004/05 2005/06 2006/07 2007/08 Fishing ... : Mean interaction rates of killer and sperm whales with longlines between 2003 and 2008. 0 10 20 30 ... 5 10 15 20 25 30 2003/04 2004/05 2005/06 2006/07 2007/08 Fishing season D ep re da tio n ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Auteur(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet

4. Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)

   calculated for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption was ... Paper Title:  Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division ... krill consumed is between 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million ... ; Miller et al., 1985). Assessments contained in this paper are based on results of research conducted in ... for a depth range of 100 to 500 metres in waters between 30 and 80°B. Krill consumption was estimated ... relationships are used in this work. The mean krill stock size in the Sodruzhestva Sea (to the south of 65°30'S ... mesh size in the codend - 20 mm). Trawl mouth openings ranged from 800 to 2 338 m2; trawling speed ... °25'E from 23 to 24 March 1988 and at the bank located at 62°30'E in the Sodruzhestva Sea (Storegg ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Auteur(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk

5. The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)

   eleginoides) have been fished in the Kerguelen Islands zone for 20 years, firstly with trawlers and more ... Paper Title:  The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands ... recently with longliners. This is the oldest fishery targeting D. eleginoides in the Indian Ocean sector of ... the Southern Ocean. However illegal, unreported and unregulated (IUU) fishing has occurred in the area ... entered in a single- table database called ‘Kerpêche’ for trawlers (split- years – 1 July to 30 June ... approximately 5 000 tonnes per year since 1993/94. In addition to this regulated legal fishing, this zone ... fact that longlining is a selective fishing method. Fish under 30 cm in total length are never caught ... orthogonal (the number of animals caught in each sample changes from one year to the other). results ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Auteur(s): Lord, C., G. Duhamel and P. Pruvost

6. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

   Paper Title:  Krill biomass in Area 48 and Area 58: recalculations of FIBEX data Abstract ... / Description:  FIBEX acoustic and length frequency data held in the BIOMASS database were used to provide ... ) 30'W 2S'W 20'W Figure 1: FIBEX survey areas and CCAMLR statistical sub areas in the West Atlantic ... WG-KRILL-92/20 KRILL BIOMASS IN AREA 48 AND AREA 58 ... densities reported in Anon. (1986) were derived using a TS value of -68.10 dB for a mean animal length of ... ., Siegel, 1988; Everson, in press); and (ill) year-to-year variability is hard to assess given that ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Auteur(s): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss

7. Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia

   Paper Title:  Investigation of bias in the mark–recapture estimate of toothfish population size at ... uneven distribution of tag placements and recapture effort, on bias in the Petersen estimator of ... ) and upwards in a low-density box, so that they tended to be retained in high-density boxes. The model ... and/or fishing effort; by ‘ideal’, it is meant that either tagging or fishing effort was in direct ... of toothfish typically move only 20–30 km each year (Marlow et al., 2003). This paper investigates ... years (40, 41, 12, 5 and 2% of 165 fish respectively). Tags recaptured in the year in which they were ... tags and years. The third step is the tag–recapture process in year t. As previously explained, the ... in that year 40 W 43 3 0' W 48 0 0' W M an ag em en t A re a A (W es t S ha ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Auteur(s): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark

8. Selectivity of commercial and research trawls in relation to krill

   more large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in ... Paper Title:  Selectivity of commercial and research trawls in relation to krill Abstract ... mean length in catches made by both trawls was  ∆L = 6.2 mm. Statistically significant variability in ... krill length composition was observed between catches made by the research trawl, while in commercial ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... expressed towards Yu. V. Kadilnikov for his assistance in preparing this article. REFERENCES Greene ... COMMERCIAL AND RESEARCH TRAWLS IN RELATION TO KRILL S.M. Kasatkina Atlantic Research Institute of Marine ... length in catches made by both trawls was AL = 6.2 mm. Statistically significant variability in krill ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Auteur(s): Kasatkina, S.M

9. Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory

   0.047 mm day –1, which is too slow to support the hypothesised 2-year life-span of this animal in the ... concentrations of the diatom Phaenodactylum tricornutum in the laboratory Abstract / Description:  Juvenile ... field. Growth conditions of krill in the Southern Ocean are discussed, with special reference to the ... available food concentration. Note: The full text of this paper will be published under the above title in ... slow to support the hypothesised 2-year life-span of this animal in the field. Growth conditions of ... OF JUVENILE ANTARCTIC KRILL FED DIFFERENT CONCENTRATIONS OF THE DIATOM PHAENODACTYLUM TRICORNUTUM IN ... krill in the Southern Ocean are discussed, with special reference to the available food concentration ... . Note : The full text of this paper will be published under the above title in Polar Biology (1987 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Auteur(s): Ikeda, T. and P.G. Thomas

10. Growth and age/length structure of populations of Notothenia (Lepidonotothen) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean

    paper. It was found that during the first years of life the linear growth rate is 3 to 5 cm per year. It ... ) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean Abstract / Description ... ) squamifrons), inhabiting areas of the Ob and Lena Banks and the Kerguelen Island Shelf, are presented in this ... g at the banks and 153 to 188 g in the Kerguelen Island area were recorded for fish at age 6 to 12 ... composition of N. squamifrons in the Ob Bank area. 134 30 r 20 ~ 10 20 to 30 20 10 20 10 ... of N. squamifrons in the Lena Bank area. 135 136 20 to 1969 n • 425 20 1970 ~ 30 ... from 3 to 5 cm per year in the first years of life to 1 cm in the last years, dependent upon the area ... 20 to 36 cm in length, aged 4 to 12 (T =8 years) and on the Lena Bank - 22 to 32 cm in length, aged ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 123–139 : Auteur(s): Zaitsev, A.K.

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