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1. Detection of anti-brucella antibodies in Weddell seals (Leptonychotes weddellii) from Cape Shirreff, Antarctica

   Abstract:  A serological study was initiated to determine the presence of anti-Brucella antibodies ... on marine mammals of Antarctica. For this study, blood and extra vascular fluid samples was taken ... from 12 Weddell Seals (Leptonychotes weddellii) at the Site of Special Scientific Interest (SSSI) Nº 32 ... carried out as part of Project 018 "Ecological studies on the Antarctic Fur Seal, Arctocephalus ...

   Meeting Document : WG-EMM-01/48 : Автор(ы): O. Blank, P. Retamal, P. Abalos and D. Torres (Chile)

2. Exploitation of mesoscale oceanographic features by grey-headed albatross Thalassarche chrysostoma in the southern Indian Ocean

   southern Indian Ocean. During incubation, most birds foraged to the north of the island, at the edges of ... . In contrast, during chick-rearing all tracked birds foraged to the southwest of the island, at the ... edges of anomalies along the South-West Indian Ridge. Previous work in this area has shown that these ... Indian Ridge. Diet samples taken during the chick-rearing period showed a predominance of fresh specimens ...

   Meeting Document : WG-FSA-01/12 : Автор(ы): D.C. Nel, J.R.E. Lutjeharms, E.A. Pakhomov, I.J. Ansorge, P.G. Ryan and N.T.W. Klages (South Africa)

3. Distribution of mackerel icefish by size-group at South Georgia

   Abstract:  The depth distribution of C. gunnari was investigated with data from 9 groundfish ... of 8 depth strata with mean depths of 112, 137, 165, 185, 208, 230, 257 and 308 m. Fish were divided ... into size groups representative of age-classes. Kruskal-Wallis tests on log-transformed median ... abundance (number of fish km?2) indicated that depth of maximum abundance increased as the size of the fish ...

   Meeting Document : WAMI-01/16 : Автор(ы): A.W. North and I. Everson (United Kingdom)

4. Trends of Antarctic fur seal population at SSSI No. 32, Livingston Island, South Shetlands, Antarctica

   , South Shetland, Antarctica. We also discuss the current reliability of the model and related population ... had to model the population at the latter site, in order to have a complete estimate of the population ... . From this, we estimated an overall increase of 17% in the total population, including in this figure a ... values of the carrying capacity of the environment (K). This might not be correct due to the restrictions ...

   Meeting Document : WG-EMM-99/16 : Автор(ы): R. Hucke-Gaete, D. Torres, A. Aguayo, J. Acevedo and V. Vallejos (Chile)

5. Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations

   Abstract:  We develop a new approach to quantifying habitat use within the foraging ranges of ... satellite-tracked seabirds. We applied kernel estimation techniques to 167 days (3738 locations) of data ... chick rearing period of the breeding cycle at South Georgia. At this time the activity range of these ... . In contrast, kernel estimation reveals that the main foraging areas of these two sympatric ...

   Meeting Document : WG-FSA-99/19 : Автор(ы): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)

6. Conservation of Antarctic pack-ice seals with increasing krill fishing and environmental change

   Abstract:  The management of Antarctic krill and conservation of its predators requires ... understanding about the compound effects of changing habitats, ecosystem interactions, and fishing practices ... . For Antarctic pack-ice seals, a main group of krill predators, we report the spatial density and krill ... declines consequent on climate change. We find that the WAP has the highest known density of pack-ice seals ...

   Meeting Document : WS-MPA-11/24 : Автор(ы): J. Forcada, P.N. Trathan (UK), P.L. Boveng (USA), I.L. Boyd (UK), D.P. Costa (USA), M. Fedak (UK), T.L. Rogers and C.J. Southwell (Australia)

7. Analysis of trawl data from the South Georgia krill fishery

   South Georgia are examined and a range of descriptive measurements reflecting the operation of the ... focussed, operating in a limited area along the shelf edge on the northern coast of the island. Each day a ... large number of trawls were undertaken by each,vessel, with trawls being shorter in duration during the ... middle of the day. Daytime trawls were also generally deeper and produced a larger catch. Individual ...

   Meeting Document : WG-EMM-97/41 : Автор(ы): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.

8. Variation in the distribution of Antarctic krill Euphausia superba around South Georgia

   Abstract:  Between 1980 and 1997 British Antarctic Survey carried out 11 cruises in the region of ... South Georgia. Here we summarize the length-frequency distributions of krill caught on each of these ... cruises and look particularly at differences between krill taken from the eastern and western ends of the ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ...

   Meeting Document : WG-EMM-97/47 : Автор(ы): Daly, H.I., Murray, A.W.A., Watkins, J.L.

9. Distribution of Soviet commercial fleet at krill fishery in the South Orkneys subarea (Subarea 48.2) during 1989/90

   Abstract:  The results of analysis of haul by haul catch statistics of Soviet commercial fleet ... . Actually during the whole season fishing vessels worked in one fishing ground off the north-western edge of ... 6.9-7.1 t/hour by May-June. Stability of the fishing ground is stipulated by peculiarities of the area ... hydrodynamics, such as availability of sustained doubling current around Islands and high water disturbance ...

   Meeting Document : WG-EMM-97/50 : Автор(ы): Sushin, V.A.

10. 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 ... distributions that were statistically different from the original distribution of krill caught in nets on 76 out ... of 100 trials. Nevertheless, these differences were smaller than those found between the penguin ...

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

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