Résultats de la recherche

1. Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector

   Paper Title:  Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the ... Southern Ocean Atlantic sector Abstract / Description:  Bioregionalisation of Antarctic and Southern Ocean ... shelf communities ideally incorporates a range of data on physical, environmental and biological ... properties. Analysis of the benthic invertebrate megafaunal assemblages of shelf habitats within the Atlantic ... shelves east of the main chain including Elephant Island and those north of the Antarctic Peninsula ... George Island, west and northwest of Elephant Island and north- east of Joinville Island. Lockhart ... islands themselves the trend is west to east, whereby a region of low biomass on the western shelf ... shelf of South Georgia are dominated by Echinodermata but biomass dominance is replaced further east ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Auteur(s): Lockhart, S.J. and C.D. Jones

2. Preliminary results of the experiments on the krill transport study in the South Orkney area (April 1992)

   contour and in the second two- loss of krill. The aggregation was 52 thous. t greater than the loss. The ... within the square of 30 x 30 miles northwestwards of Coronation Island in the fishing fleet operation ... area. The krill biomass was estimated within the square at the start and the end of works. It amounted ... assessment of krill density and oceanological stations were carried out along the square perimeter. Four ...

   Meeting Document : WG-CEMP-92/34 : Auteur(s): L.G. Maklygin, V.N. Shnar, A.P. Malyshko (Russian Federation) and A.G. Shepelev (Ukraine)

3. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

   , in the inshore foraging areas middle-sized krill (modal length 43 mm), which consisted mainly of ... areas of krill (≥250g/m2) were rather limited. In contrast, fur sea! foraging areas were formed in ... . 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ... vertical migration, staying close to the surface throughout the day. As for body size and maturity of krill ...

   Meeting Document : WG-KRILL-92/27 : Auteur(s): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)

4. Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).

   Paper Title:  Distribution and size–age composition of Antarctic krill (Euphausia superba) in the ... composition and biological condition of Antarctic krill (Euphausia superba) caught by the Russian krill ... distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes (3 ... estimating the size–age structure of pop- ulations based on length-frequency distributions (Marr, 1962 ... life-span of E. superba range from 3 to 8 years (Marr, 1962; Makarov, 1983; Aseev, 1984; Ikeda, 1984 ... of Euphausia superba Dana. Antarctic, 22: 107–120 (in Russian). Marr, J.W.S. 1962. The natural ... Understanding the population structure of Antarctic krill (Euphausia superba) is one of the major issues for ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Auteur(s): Sologub, D.O. and A.V. Remeslo

5. Fishes of the Ross Sea Region – A field guide to common species caught in the longline fishery

   working on toothfish longline fishing vessels to identify the main species of fishes taken in the Ross Sea ... region of Antarctica. Technical terms are kept to a minimum, and identification features are mostly those ... species of crocodile icefishes (Channichthyidae), and cod icefishes (Nototheniidae). It does not cover all ... about the identification of some of the fishes, and taxonomic study (beyond the scope of this guide) is ... . Often flattened and broad posteriorly. Median fins. Unpaired fins located in the middle of the upper ... features: Middle lateral line with 64 to 77 tubed scales, extending forward to near the rear edge of the ... canine-like teeth near the middle of the upper jaw. Colour: Large individuals are brownish-grey on ... short middle lateral line of 35 to 48 tubed scales, with the front end of the line separated from the ...

   Document : Site Section: Publications

6. The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia

   , the most numerous- fish taxon, 98% were taken between early February and the middle of March ... Abstract:  The diet of lactating female Antarctic fur seals Arctocephalus gazella at South Georgia ... was investigated during the pup rearing period (January- March) of 1991-1994. Antarctic Krill ... Euphausia superba was the main prey item, occurring in 88% of all scats (n=497), whereas fish occurred in 47 ...

   Meeting Document : WG-EMM-95/28 : Auteur(s): Arnould, J.P.Y., Reid, K.

7. Milk fatty acid signatures indicate both major and minor shifts in foraging ecology of lactating Antarctic fur seals

   Abstract:  Fatty acid signature analysis is based on the conservation and unique signatures of ... fatty acids in the marine food chain and it may be useful in determining the composition of seal diets ... ), mid (n=11), and late (n=8) foraging trip intervals, and demonstrate its use in detecting shifts in ... perinatal fast are derived largely from blubber mobilization and thus likely resemble an integration of ...

   Meeting Document : WG-EMM-97/14 : Auteur(s): Boyd, I.L., Iverson, S.J., Arnould, J.P.Y.

8. Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill

   Paper Title:  Effects of recruitment variability and natural mortality on generalised yield model ... natural mortality rate of 0.8 and recruitment variability generated using a Beta distribution for ... proportional recruitment of krill. In this study, krill sampling data for empirical size frequencies were ... supplied to the GYM as the ‘vector of recruitments’ input option to simulate the population dynamics of ... The annual catch of Antarctic krill (Euphausia superba) in the Scotia Sea (FAO Statistical Subareas ... 48.1, 48.2, 48.3 and 48.4) is limited by a trigger level of 620 000 tonnes until a procedure for ... division of the precautionary catch limit of 5.61 million tonnes into smaller management units has been ... approach that can be used to compare population responses to proposed levels of harvest against decision ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Auteur(s): Kinzey, D., G. Watters and C.S. Reiss

9. Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at South Shetland Islands

   in a loss of 35% of the initial mass, comprising 63% of initial body fat and 20% of initial body ... gained while at sea. However, protein loss expressed in absolute terms or as a proportion of that present ... , King George Island (25 de Mayo). During lactation females spent a mean of 6021±1365 Mj, which resulted ... to recover an average of 55% of the mass, including 46% of the fat, 71% of the protein and 47% of the ...

   Meeting Document : WG-EMM-04/33 : Auteur(s): A.R. Carlini, G.A. Daneri, M.E.I. Márquez (Argentina), H. Bornemann (Germany), H. Panarello, R. Casaux (Argentina), S. Ramdohr and J. Plötz (Germany)

10. An Apparent Decrease in the Prevalence of “Ross Sea Killer Whales” in the Southern Ross Sea

    very abundant penguin, seal and whale components, loss of the toothfish option for Ross Sea killer ... the loss of large fish as a prey choice. Author(s):  D.G. Ainley, G. Ballard and S. Olmastroni Title ... occurrence patterns and diet of RS killer whales, and present new information on numbers observed in the ... large Antarctic toothfish (Dissostichus mawsoni), as the review herein demonstrates. On the basis of sea ...

    Meeting Document : WG-EMM-09/P01 : Auteur(s): D.G. Ainley, G. Ballard and S. Olmastroni

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