Résultats de la recherche

1. Susceptibility to oxidative stress in different species of Antarctic birds: preliminary results

   maccormicki), breeding at Edmonson Point (Wood Bay, Ross Sea). At the time of sampling, Adélie penguins were ... against toxicity of reactive oxygen species (ROS). These highly reactive molecules are normally produced ... during the 4-electrons reduction of molecular oxygen to water coupled with oxidative phosphorylation and ... during the activity of several enzymatic systems which produce ROS as intermediates. If the antioxidant ...

   Meeting Document : WG-EMM-99/59 : Auteur(s): S. Corsolini, F. Regoli, S. Olmastroni, M. Nigro and S. Focardi (Italy)

2. Relative selectivity of four sampling methods using traps and trawls for male snow crabs (Chionoecetes opilio)

   deployed during the day. and (4) bottom trawl deployed at night. Catches were characterized in terms of ... , were larger than those caught in the trawl; the size of crabs caught in the trawl at night was larger ... Abstract:  Catch rate and catch composition of male snow crabs were compared for four sampling ... crab body sizes, shell conditions, and claw allometry. We concluded that: 1) mean and modal size of ...

   Meeting Document : WS-CRAB-93/11 : Auteur(s): J.M. Hoenig and E.G. Dawe (USA)

3. Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and Shag Rocks (Southern Ocean) CCAMLR Subarea 48.3.

   during groundfish surveys at South Georgia and Shag Rocks from 1986 to 2012 were analysed to investigate ... east of Shag Rocks and the west of South Georgia. Reliable biomass estimates were not possible due to ... recognisable cohort progression and a trend of increasing size over time indicating a potential recovery of the ... stock. Mean length at first maturity for males and females (37-38cm) was very similar to that described ...

   Meeting Document : WG-FSA-12/34 : Auteur(s): S. Gregory, J. Brown and M. Belchier (United Kingdom)

4. Summary of the seabird and marine mammal observations during observed toothfish (Dissostichus spp.) longline fishing operations in CCAMLR Subareas 88.1 and 88.2

   composition reported each year because of variation in the spatial distribution of the seabirds. At-sea ... Abstract:  Twenty-eight species of seabird were reported from observations during longline setting ... distribution of fishing effort was dictated by the presence of sea ice and there are differences in the seabird ... identification of some species is difficult and some of the species that were reported from outside their known ...

   Meeting Document : WG-FSA-04/42 : Auteur(s): S.J. Baird (New Zealand)

5. USING GENETIC CONNECTIVITY TO IDENTIFY VULNERABLE MARINE ECOSYSTEMS (VMES) IN ANTARCTICA – THE ISSUE OF SCALE

   . At present, the available data is very incomplete, and an understanding of the generality of these ... genetic connectivity in benthic invertebrates at differing spatial scales in Antarctica. This information ... is valuable for understanding the potential resilience of benthic communities under threat from ... bottom fishing. Genetic connectivity allows insight into the realized dispersal of organisms, i.e. the ...

   Meeting Document : WS-VME-09/06 : Auteur(s): Wilson, N.G.

6. Surface water masses, primary production, krill distribution and predator foraging in the vicinity of Elephant Island during the 1989-90 austral summer

   of it. A second front was apparent at the eastern side of the study area and was tentatively ... north of their breeding colonies on Seal Island, but at different distances (18-100 km for fur seals, 20 ... Abstract:  Four successive surveys of the pelagic marine environment were conducted over a 100-by ... were collected to describe the thermohaline structure, the distribution of phytoplankton biomass and ...

   Meeting Document : WG-CEMP-90/11 : Auteur(s): A.F. Amos, J.L. Bengtson, O. Holm-Hansen, V.J. Loeb, M.C. Macaulay and J.H. Wormuth (USA)

7. Proposals on standardization of toothfish resource research

   discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... mandatory for all ships participating in the survey. At the same time, methodological aspects of the multi ... Abstract:  The methodology of modern trawl surveys carried out the ICES responsibility area is ... regarding the longline survey methodology in Division 58.4.1. It is shown that the methodology of modern ...

   Meeting Document : WG-SAM-2019/34 : Auteur(s): S. Kasatkina

8. Evidence of change to the environment, ecosystem and fishery within Area 48 indicates the need for continued precaution

   changes are consistent with global evidence of the ecological effects of environmental change. At the same ... for regularly reviewing whether its management of the krill fishery is suitably precautionary. At the ... was used to set the trigger level. As a consequence of these major risk factors (increased catch ... precaution, should be retained. Author(s):  S. Hill and A. Atkinson Title:  Evidence of change to the ...

   Meeting Document : WG-EMM-2019/29 : Auteur(s): S. Hill and A. Atkinson

9. Penguin foraging behavior in relation to the distribution of prey

   migration pattern, being dispersed in the upper portion of the water column at night and more concentrated ... Abstract:  The diving behavior of 7 chinstrap penguins (Pygoscelis antarctica) (N=12,171 dives ... ) was measured concurrently with a hydroacoustic assessment of the vertical distribution and abundance ... of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland ...

   Meeting Document : WG-KRILL-93/47 : Auteur(s): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)

10. Distributions and predator-prey interactions of macaroni penguins, Antarctic fur seals, and Antarctic krill near Bird Island, South Georgia

    factored out, we were able to demonstrate an additional influence of Antarctic krill abundance at ... measurement scales between 10 and 100 km for Antarctic fur seals and for macaroni penguins at the scale of 70 ... Abstract:  We studied the distributions, abundances and interactions of macaroni penguins Eudyptes ... . Simultaneous surveys of marine birds, Antarctic fur seals and Antarctic krill were conducted along a series of ...

    Meeting Document : WG-CEMP-93/12 : Auteur(s): G.L. Hunt, Jr (USA), D. Heinemann (USA) and I. Everson (United Kingdom)

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