Résultats de la recherche

1. Myctophids in the diet of Antarctic predators

   review covers publications for the period since 1984-85 to the present. In total, over 50 publications ... - seven, Bathydraconidae- two and Rajidae- one), 18 species of birds (penguins- seven, albatrosses- four ... , petrels- five, prions- one and cormorants- one) and two species of seals. Myctophids in the diet of ... the present study is to review published data on the diet of various top predators (birds, seals ... Marion and Macquarie Islands were carried out for a whole year. Authors noted very distinct seasonal ... mentioned above. In total, over 50 publications contained some information on the myctophid component of ... the APF area data on myctophids came from sub-Antarctic islands and two shallow banks (Ob and Lena ... diet is largest on Heard and Macquarie Islands. On Marion Island an unknown amount of P. tenisoni is ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 335–368 : Auteur(s): Sabourenkov, E.

2. Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008

   samples collected by scientific observers on board Japanese commercial krill fishing vessels in the area ... Maru. An Otter midwater trawl of ca. 100 m long with a horizontal open- ing of ca. 20 m and a vertical ... of myctophid fish: (a) Protomyctophum choriodon. (continued) A 0% 10% 20% 30% 40% 50% 60 ... ) 2004 (n=33) 2008 (n=643) 2002 (n = 20) 2004 (n = 33) 2008 (n = 643) 70 60 50 40 30 20 10 0 ... % 10% 20% 30% 40% 50% 60% 20 30 40 50 60 70 80 90 100 110 120 130 Standard length (m m ) P e rc ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Auteur(s): Iwami, T., M. Naganobu, K. Taki and M. Kiyota

3. Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987

   differed significantly from that in previous seasons which argues for an exchange with C. gunnari from ... previous seasons which argues for an exchange with C. gunnari from other shelf areas of the Peninsula ... . Nearly all gonads were in resting stage. 4. DISCUSSION Elephant Island is an area where two ... 1982/83, differed significantly from that in 1985 and 1986 arguing for an exchange with individuals ... ) '- 10 20 10 Figure 8: 10 20 30 Chaenocephalus aceratus Oct. [n-2163] - Dec. [n - 1135 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Auteur(s): Kock, K.-H.

4. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ... in krill availability. Condition index provides a useful proxy for krill density and is likely to be ... 1997 Abstract / Description:  Mackerel icefish (Champsocephalus gunnari) are widespread on the South ... account for 20% of the total mass (Kock, 1992; Everson et al., 1996). Arising from this, we envisage two ... were used to derive an estimated mass for each fish ( and K,,). Two condition indices were calculated ... except the two months prior to spawning. Depending on locality, that will mean that except for the ... by the Convention for the Conservation of Antarctic Marine Living Resources. An index of condition ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Auteur(s): Everson, I. and K.-H. Kock

5. Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area

   of the fishery compared to later year classes. However, in selecting an age-specific natural ... for each of the three terminal biomass estimates and for each of the two survivorship/catchability ... suggests that the level in 1971 may by chance have been unusually low for an unexploited stock, and ... survival and r II recruitment rates for C. gunnari in the South Georgia area. Year Survivorship ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 1-21 : Auteur(s): Cooke, J.G.

6. Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system

   / Description:  An exchange system was established among Members of CCAMLR to compare age determinations for the ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... . gunnari from South Georgia and lowest for scales of adult N. rossii and N. gibberifrons and otoliths of P ... (Gerasimchook in SC-CAMLR-VII/8G/41). Sagittal otoliths were proved to be suitable for estimating age. Two ... less than 50%. If one allows for a deviation of one year, agreement among most readers was more than ... in experienced readers when it was 38.0%. Even allowing for one year of deviation among readers ... . Allowing for one year of deviation, agreement increased to 52.1 %. The following table demonstrates the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Auteur(s): Kock, K.-H.

7. The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design

   krill which are used in models to estimate sustainable yield in Area 48. The survey design includes two ... boundaries is described. The methods used for selecting the location of each survey transect are explained ... and the planned cruise tracks for each of the four vessels participating in the survey are shown ... . Details are also described for adaptively modifying the survey during its execution. This includes ... adopted. Such an approach has been widely used in the past (for instance FIBEX - BIOMASS, 1980) and was ... the two- stage process, all primary sampling units had an equal probability of being sampled; this ... gave the necessary condition for the validity of the design- based variance estimators. An ... implementation of the two-stage random- isation process was carried out in seven steps for each stratum: (i ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Auteur(s): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly

8. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

   fish stocks, which seriously affect model assumptions. This paper demonstrates that for the new fishery ... , analyses using catch-at-age data derived from research cruises may provide an alternative to other methods ... on research surveys, making it possible to estimate the standing stock and potential yield of a ... parameters presented in Table 1. Catch data were available for two years (1991 and 1992), which could be ... exploitation pattern stabilised at a value of 20. The recruits (calculated from equation (9», for the ... fisheries are based on research fishing procedures which provide information for evaluation of the standing ... least the last two fishing seasons, as well as those based on previously unexploited stocks. The catch ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Auteur(s): Zuleta, A.V. and C.A. Moreno

9. Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel

   readily available for conventional coverage of harvested stocks and their ecosystems. This paper describes ... fishing and research vessel could make a large amount of important data available for both management ... , through CCAMLR, and the broader scientific community and thus improve the basis for resource evaluation ... as adequate monitoring, to avoid unintended impacts on the harvested stocks and the associated ... accommodate 20 scientific crew on longer cruises. The vessel will have a dedicated fibre optic network for ... dramatically over its 30- to 40-year history. The present annual catch in the Atlantic sector of the Southern ... scientific use when the vessel is new. In general, space for a 20 ft container laboratory van would be ... important factors for an efficient trawling strategy. Further, such perfor- mance is also crucial for ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Auteur(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins

10. By-catch of fish in the krill fishery

    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 ... 3000 3000 100 100 245 0.70 111 20 5 53 37 36 30 620 620 37 54 30 730 0.50 112 20 5 53 45 36 35 180 ... 180 35 60 30 940 0.50 113 20 5 53 41 37 31 320 315 65 150 1535 0.50 114 23 5 53 35 38 20 2550 2550 ... 300 20 50 135 1.25 32 19 1 54 53 34 38 200 300 30 130 440 0.92 122 27 2 54 54 34 31 275 270 50 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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