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1. Stable isotope analysis of Southern Ocean fish tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni)

   Atlantic, and sperm whales from the Gulf of Mexico. There was high variance in?15N and?13C values for each ... may be due to ontogentic changes in diet, and/or progressive consumption of larger individuals of the ... same species with age. There was significant residual variance in?15N and?13C values for each of the ... not explained by the isotopic composition of prey sampled in that area. This may be due to: (1 ...

   Meeting Document : WG-EMM-07/19 : Autor(es): M.H. Pinkerton, S. Bury, S.M. Hanchet and D. Thompson (New Zealand)

2. Mercury concentrations of five species of Antarctic fish collected from CCAMLR Subareas 88.1 and 88.2

   (NZFSA). In contrast, mean levels of mercury for D. mawsoni were 0.10 mg/kg-1 in the 1998 samples and ... 0.16 mg/kg-1 in the 2006 samples, both of which are well below the permissible level. Mercury levels ... levels were positively correlated with fish length in four of the species. Mercury levels also showed ... showed no trends with any factors for M. whitsoni. The low levels of mercury in D. mawsoni relative to ...

   Meeting Document : WG-FSA-07/24 : Autor(es): S.M. Hanchet, D.M. Tracey, A. Dunn, P.L. Horn and N. Smith (New Zealand)

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

   41.7mm and 1.0720gcm-3 in 2005 survey. The corresponding sound-speed contrasts of mean total length ... improve the accuracy and precision of the TS value. Since in situ and experimental TS measurements of ... ) and the other is the ratio of the sound speed in animal to that in the surrounding water (sound-speed ... still few. During Antarctic surveys of the Japanese R/V Kaiyo Maru in 2000 and 2004/ 2005, the ...

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

4. Spatio–temporal dynamics of Antarctic krill fishery: identification of fishing hotspots

   of the greatest fishery in Antarctic waters. Management of the fishery is based on a precautionary ... and temporal pattern of the fishery is only described in meso to macro scales (>>10 4 km 2 ... those years when the precautionary catch limit is reached. These events occur mainly in the centre of ... Abstract:  Antarctic krill is a key species in the Southern Ocean food web and is also the target ...

   Meeting Document : WG-EMM-16/52 : Autor(es): F. Santa Cruz, B. Ernst and J.A. Arata

5. Dates of spawning of Antarctic euphausiids

   the dates of the beginning, termination and periods of high and the most intension of spawning. In the ... . The spawning of each species begins later in waters of high-latitude origin. The same connection ... exists for the period of the most intensive spawning. The termination of spawning in the waters of high ... -latitude origin is earlier then in the waters of an other type. The correlation with a geographical ...

   Meeting Document : SC-CAMLR-VIII/BG/24 : Autor(es): Delegation of USSR

6. Growth rates of Antarctic fur seals as indices of environmental conditions

   mass at age in each year compared to the multi-year mean, that was not dependent on assumptions of ... weighing cross-sections of the population were compared with measured/inferred changes in the the ... growth rates in years of low krill availability. Biases reflecting changes in the component of the ... differences in growth rate can reliably be derived from differences in the slope of a linear relationship ...

   Meeting Document : WG-EMM-01/20 : Autor(es): K. Reid (United Kingdom)

7. Measurements of sound-speed and density contrasts of Antarctic krill (Euphausia superba) on board RV Kaiyo Maru

   . The corresponding sound-speed contrast of krill with mean total lengths of 44.2mm was 1.011 in the ... Abstract:  In order to calculate the target strength of Antarctic krill (Euphausia superba) using ... of krill were measured during the Antarctic surveys conducted by the Japanese RV Kaiyo Maru in 1999 ... Sea in January and February 2005. Sound-speed was measured using the "time of flight" method ...

   Meeting Document : WG-EMM-08/56 Rev. 1 : Autor(es): Y. Takao, H. Yasuma, R. Matsukura, K. Amakasu and M. Naganobu (Japan)

8. Direct ageing of Antarctic krill (Euphausia superba) – potential utility of eyestalk sections for age determination

   Abstract:  We outline a method for the direct determination of age in Antarctic krill (Euphausia ... endocuticle layer of the eyestalks and gastric mill in decapod crustaceans. Here we report on a preliminary ... superba). Recent studies (Kilada et al. 2012), have shown that annular growth bands are present in the ... proof of concept study using several known age krill grown under controlled conditions at the Australian ...

   Meeting Document : WG-EMM-15/45 : Autor(es): C. Reiss (USA), R. Kilada (Canada) and S. Kawaguchi (Australia)

9. MaxEnt reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia 1996–2000

   approximately 0.5 km intervals along transect for each of the ten 80 km transects in each box, providing about ... probable krill density for each of the 32000 0.5 km x 0.5 km cells in each survey box, taking explicit ... account of the spatial relationship between densities in the observed data. Despite some very large ... of mean krill density within two survey boxes of dimensions 80 km x 100 km to the north east and ...

   Meeting Document : WG-EMM-02/36 : Autor(es): M.H. Wafy, A.S. Brierley, S.F. Gull and J.L. Watkins (United Kingdom)

10. Extinction risk of Antarctic and sub-Antarctic colonies of Pygoscelid penguins under climate change context

    different colonies around Antarctica. In this study, the extinction risk of Adélie, Chinstrap and Gentoo ... Abstract:  Several studies have emphasized the variable abundance of Pygoscelid penguins from ... penguins was evaluated in order to identify the most endangered colonies under present-day and future ... structure and the response of population dynamics of each colony to exogenous perturbations. The ...

    Meeting Document : WG-EMM-2019/74 : Autor(es): M. Huerta and S.A. Estay

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