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1. 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 ... change were investigated: 1) change occurring at a constant rate after a certain point in time and 2) a ... the latter form could be more quickly and powerfully detected at a range of effect sizes than could ...

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

2. 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 : Autor(es): E. Moreira, E. Barrera-Oro and M. La Mesa

3. 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 : Autor(es): P.N. Trathan, J. Forcada, R. Atkinson, R.H. Downie and J.R. Shears

4. 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 ... beginning of this period (September). Data on stock assessment collected during accounting survey are good ... the current year, continue feeding, but their feeding intensity considerably decreases and they ...

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

5. 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 : Autor(es): M. Naganobu and K. Kutsuwada (Japan)

6. 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 : Autor(es): 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)

7. 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 : Autor(es): K. Krusic-Goluband R. Williams (Australia)

8. 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 : Autor(es): X. Xu, E.G. Dawe and J.M. Hoenig (USA)

9. Summary of Ross Sea skate tagging programme results

   years, and 47 (0.5%) have been recaptured. The recapture of tagged Amblyraja georgiana after up to four ... georgiana moved very little, even after four years at liberty. There was no movement between SSRUs, and the ... Abstract:  Over 9,000 skates have been tagged and released in the Ross Sea over a period of seven ... 1,000 m and tagged. In-water tagging greatly reduces the incidence of broken jaws in skates, and ...

   Meeting Document : WG-FSA-06/32 : Autor(es): S.L. Ballara, A. Dunn and M.P. Francis (New Zealand)

10. Growth per molt of male snow crab Chionoecetes opilio from Conception and Bonavista Bays, Newfoundland

    predicted the size after two molts in close agreement with a regression line fitted to data on double ... range 80-110 mm carapace width, the predicted size after molting in mm is equal to 7.398 + 1.038 x pre ... , Newfoundland, in order to estimate the increase in size at the time of molting. Ninety-two animals were ... recaptured which had usable information on growth increments. Based on the amount of growth, we hypothesized ...

    Meeting Document : WS-CRAB-93/12 : Autor(es): D.M. Taylor and J.M. Hoenig (USA)

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