Résultats de la recherche

1. CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins

   laying. Peak presence of males occurred 15–21 days after the appearance of the first egg in the colony ... identified with 91∙8–98∙6% accuracy within 15–21 days after the first sighting of an egg. The method provides ... Abstract:  The suggestion that sex of Adélie penguins, Pygoscelis adeliae, might be assigned by ... observing which member of the pair (the male) takes the first long incubation shift (Anon. 1991) was ...

   Meeting Document : WG-CEMP-94/08 : Auteur(s): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)

2. First increment validation of Patagonian toothfish (Dissostichus eleginoides) from Heard Island

   the end of the first year of growth. While there is a general consensus that the observed increments ... that the outer edge of the first translucent zone would correspond with the end of the first year’s ... one opaque and one translucent increment is formed each year on the sectioned face of sagittal ... assumed to cause interpretation differences was the position of the first increment that corresponded with ...

   Meeting Document : WG-FSA-05/61 : Auteur(s): K. Krusic-Golub, C. Green and R. Williams (Australia)

3. Detection of systematic change in Adélie penguin foraging trip duration: consequences of high inter-annual variability and usefulness of ice cover as a covariate

   Abstract:  Power analyses were carried out using a 12 year data set from the Béchervaise Island ... Adélie penguin colony with the aim of determining minimum sample sizes required to detect systematic ... the latter form could be more quickly and powerfully detected at a range of effect sizes than could ... from the onset of change (55% overall increase). Inclusion of ice cover as a covariate in the analyses ...

   Meeting Document : WG-EMM-05/22 : Auteur(s): J. Clarke, C. Southwell and L.M. Emmerson (Australia)

4. Age validation of juvenile Notothenia rossii at Potter Cove, South Shetland Islands, using mark-recapture data

   same analysis in two individuals marked and recaptured during the same summer, after 1–3 months at ... marked specimens gives the most reliable information. We carried out a tagrecapture experiment on ... Notothenia rossii at Potter Cove, to validate, for first time for this species using this method, the ... –38.1 cm) tagged and released in successive years from 2004 to 2010, 7 were recaptured at the same site ...

   Meeting Document : WG-FSA-13/P01 : Auteur(s): E. Moreira, E. Barrera-Oro and M. La Mesa

5. POPULATION ASSESSMENTS OF GENTOO PENGUINS (PYGOSCELIS PAPUA) BREEDING AT AN IMPORTANT ANTARCTIC TOURIST SITE, GOUDIER ISLAND, PORT LOCKROY, PALMER ARCHIPELAGO, ANTARCTICA

   consecutive years beginning in the 1996/1997 breeding season. Our results demonstrate that all colonies show ... Abstract:  Goudier Island is located in the Palmer Archipelago, to the west of the Antarctic ... Peninsula; it is one of the most frequently visited tourist sites in Antarctica. A number of gentoo penguin ... (Pygoscelis papua) breeding colonies are located on the island and these have been the focus of one of the ...

   Meeting Document : WG-EMM-09/P07 : Auteur(s): P.N. Trathan, J. Forcada, R. Atkinson, R.H. Downie and J.R. Shears

6. Possible causes of variation of Champsocephalus gunnari vertical and horizontal distribution

   feeding period, they form aggregations near bottom thus being available for harvesting just at the ... the current year, continue feeding, but their feeding intensity considerably decreases and they ... beginning of this period (September). Data on stock assessment collected during accounting survey are good ...

   Meeting Document : WAMI-01/08 : Auteur(s): Zh.A. Frolkina and S.M. Kasatkina (Russia)

7. Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988

   differences across the Drake Passage, sea ice cover and chlorophyll-a in the Antarctic Peninsula area during ... 1982-1998. They found significant correlations between krill recruitment and those factors. The ... westerlies were especially regarded as a key environmental index. Fluctuations in the westerlies across the ... Drake Passage were referred to as the Drake Passage Oscillation Index (DPOI). We planned to extend time ...

   Meeting Document : WG-EMM-02/44 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

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

   at the beginning of lactation explained about 50% of the variation in the protein gained during the ... energy gain during the post-breeding aquatic phase in Southern elephant seal females at Stranger Point ... in a loss of 35% of the initial mass, comprising 63% of initial body fat and 20% of initial body ... protein. During the 58±5.4 d post-breeding foraging period, females gained 135±39 Kg, which allowed them ...

   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)

9. Progress towards validation of ageing of Dissostichus eleginoides using otoliths

   annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... determination in this species: investigating the accuracy of ageing small fish (1000 days; and developing ... techniques to analyse the daily marks at the centre of the otolith in order to pinpoint the position of the ...

   Meeting Document : WG-FSA-04/67 : Auteur(s): K. Krusic-Goluband R. Williams (Australia)

10. Change-in-ratio and index-removal methods for population assessment and their application to snow crab (Chionoecetes opilio)

    necessary to sample the population before and after the fishery, and to determine the total harvest and its ... crabs (Chionoecetes opillio) in St. Mary's Bay, Newfoundland, before and after the fishery, and to ... for fisheries studies. We also show how to combine the two approaches in a single estimator. It is ... composition, in order to use these methods. We use the methods to estimate the population of legal-size snow ...

    Meeting Document : WS-CRAB-93/10 : Auteur(s): X. Xu, E.G. Dawe and J.M. Hoenig (USA)

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