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1. Are penguins and seals in competition for Antarctic krill at South Georgia?

   consumers of Antarctic krill. In recent years the population of fur seals has increased whereas that of ... greater competition for the prey of macaroni penguins leading to the decline in their population. We use a ... 1989 and 2000. Foraging ranges of the two species showed considerable overlap in both years but the ... prevalence of krill in the diet of the two predators differed with less krill in the diet of macaroni ...

   Meeting Document : WG-EMM-01/22 : Author(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, I.J. Staniland, K. Reid and A.S. Brierley (United Kingdom)

2. INVESTIGATING LENGTH AT MATURITY OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) BASED ON SCIENTIFIC OBSERVERS’ DATA

   Abstract:  Through generalised linear models, the gonadosomatic index of Antarctic toothfish in ... difference in the GSI values of fish at different maturity stages. However these studies were carried out on ... 137cm. The equivalent GSI at 50% maturity was in the range of 1.1 to 1.4%. These results were used to ... histology and GSI data, most fish found in the northern areas, about a third of those found in the slope ...

   Meeting Document : WG-FSA-08/48 : Author(s): S. Mormede, S. Parker and P. Grimes (New Zealand)

3. Preliminary report of sound-speed contrast and density of krill measured on board RV Kaiyo Maru

   -speed and density of krill were carried out. We report on those preliminary results. The mean total ... length and mean density were 43.5mm and 1.0562gcm-3, respectively in 2000 survey, and were 41.7mm ... and 1.0720gcm-3 in 2005 survey. The corresponding sound-speed contrasts of mean total length 25.1mm and 48.6mm ... of krill were carried out. We report on those preliminary results. The mean total length and mean density ...

   Meeting Document : WG-EMM-05/36 : Author(s): Y. Takao, H. Yasuma, R. Matsukura and M. Naganobu (Japan)

4. Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability

   the duration of early and late stage foraging trips. For example, low breeding success was recorded in ... period and heavy fledglings. These results may indicate changes in the relative level of resource ... curve). Our results highlight the importance of taking into account the changing behaviours of birds in ... the context of life history requirements, changes in prey accessibility as well as any temporal ...

   Meeting Document : WG-EMM-12/22 : Author(s): L. Emmerson and C. Southwell (Australia)

5. Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability

   the duration of early and late stage foraging trips. For example, low breeding success was recorded in ... period and heavy fledglings. These results may indicate changes in the relative level of resource ... curve). Our results highlight the importance of taking into account the changing behaviours of birds in ... the context of life history requirements, changes in prey accessibility as well as any temporal ...

   Meeting Document : WG-EMM-12/48 : Author(s): L. Emmerson and C. Southwell (Australia)

6. VARIABILITY IN KRILL BIOMASS LINKS HARVESTING AND CLIMATE WARMING TO PENGUIN POPULATION CHANGES IN ANTARCTICA

   areas on the planet, with 5–6 °C increases in mean winter air temperatures and associated decreases ... on the planet, with 5–6 °C increases in mean winter air temperatures and associated decreases ...

   Meeting Document : WG-EMM-11/P1 : Author(s): W.Z. Trivelpiece, J.T. Hinke, A.K. Miller, C.S. Reiss, S.G. Trivelpiece and G.M. Watters

7. Krill aggregation characteristics: spatial distribution patterns from hydroacoustic observations. Polar Biology (in press)

   -normally distributed with a mean of 0.18 t. Only 3% of the aggregations were heavier than ... , suggesting that they could have been in the process of fragmenting or amalgamating. Estimates of the mean ... -normally distributed with a mean of 0.18 t. Only 3% of the aggregations were heavier than ... , suggesting that they could have been in the process of fragmenting or amalgamating. Estimates of the mean ...

   Meeting Document : WS-KCPUE-89/11 : Author(s): D.G.M. Miller and I. Hampton (South Africa)

8. Research plan for toothfish in Divisions 58.4.4a and 58.4.4b by Shinsei Maru No. 3 in 2010/11

   Abstract:  In order to clarify the stock status and biological characteristics of Dissostichus spp ... Maru No. 3 to be conducted in April-June 2011. This is the second year of the survey of the 3-5 years ... the mark-and-recapture studies, sufficient tagging rate of 5 fish / ton will be conducted in the same ... the fish stock, and will take advices for the method of estimations in the WG-SAM-10 meeting. Author(s ...

   Meeting Document : WG-SAM-10/15 : Author(s): Delegation of Japan

9. Defining smaller management areas within CCAMLR

   of colonies and foraging range) and the potential fishing grounds will provide the means for circumscribing ... of colonies and foraging range) and the potential fishing grounds will provide the means for circumscribing ...

   Meeting Document : WG-EMM-01/52 : Author(s): A.J. Constable and S. Nicol (Australia)

10. Selectivity-induced bias in growth parameter estimates

    with probability equal to an assumed relative selectivity at length. Both the mean growth parameters ... to an assumed relative selectivity at length. Both the mean growth parameters and the selectivity function used ...

    Meeting Document : WG-FSA-SAM-05/19 : Author(s): G.P. Kirkwood (United Kingdom)

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