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1. 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)

2. 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)

3. Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements

   tonnes- at the low end of values that have been suggested in the past. The differences between our ... survey of the South Atlantic in January 2000 may result in an effective biomass which is greater than the ... value used in the past. The seasonal and local consequences of large catch limits will have to be taken ... density measurements Abstract / Description:  The total circumpolar abundance of Antarctic krill ... the digitised map results in an overall mean biomass of 92.1 million tonnes (Table 1). Using the ... tonnes - the mean value derived from estimates of known density. Krill biomass in the southern Atlantic ... effectively underestimated the krill biomass by a factor of three, so the new survey of the South Atlantic in ... distribution maps produced in the Discovery Reports (Marr, 1962; Mackintosh, 1973) support modern ideas of ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Autor(es): Nicol, S., A.J. Constable and T. Pauly

4. 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)

5. 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

6. Peak mortality of krill, fished with midwater trawls and feasible criteria of krill trawls ecological safety

   elimination probability caused by cath and mortality in fishery operations. The coefficient of trawl ... Abstract:  The mathematical model of a fishery object contact against a mesh, while escaping ... ecological safety is offered, which is the ratio of the amount of the objects caught and objects caught and ... died during fishery. The equations are presented to estimate the gross removal of an object by the ...

   Meeting Document : WG-KRILL-93/34 : Autor(es): Yu. V. Kadilnikov (Russia)

7. A review of methodologies aimed at avoiding and/or mitigating incidental catch of protected seabirds.

   published reviews in the field of bycatch mitigation have typically had a species or fishing method focus ... management of offal and discards are recommended as the most effect measure to reducing seabird bycatch in ... fisheries interactions have been released in a variety of local, national and international media. Recent ... . This report presents the results of the seabird component of a global review of mitigation methods ...

   Meeting Document : WG-FSA-05/P8 : Autor(es): Bull, L.

8. Models of larvae dispersion of Antarctic toothfish (Dissostichus mawsoni)

   stock structure in the Ross Sea have parallels for populations in other regions of the Antarctic, and ... locations in the northern areas of Subarea 88.1 & 88.2 to further investigate the possible larval ... hypotheses about how stock structure is maintained may apply to each population. We provide an update of the ... circumpolar models of larval dispersion for D. mawsoni developed by Hanchet et al. (2008) using the HiGEM ...

   Meeting Document : WG-FSA-12/48 : Autor(es): A. Dunn, G.J. Rickard, S.M. Hanchet and S.J. Parker (New Zealand)

9. Using tag-recapture data to estimate catchability of a series of random stratified trawl surveys

   Heard Island and McDonald Islands (HIMI) in Division 58.5.2, a prior for catchability q of the random ... address potential bias in the estimation of q and conclude that the potential bias that may arise from ... fishing selectivity cannot be corrected for given the available data.   In the absence of an unbiased ... used for abundance estimates from trawl surveys in a toothfish stock assessment. The bounds of such as ...

   Meeting Document : WG-SAM-15/34 : Autor(es): W. de la Mare, P. Ziegler and D. Welsford (Australia)

10. Possible effects of different levels of fishing on krill on predators - some initial modelling attempts

    Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... . Computations based on this model indicate that variability in the annual recruitment of krill results in ... predator population dynamics information in the context of the models developed, and about the model1ing of ... of the parameters of predator survival rates as functions of krill abundance, by considering a krill ...

    Meeting Document : WG-KRILL-93/43 : Autor(es): D.S. Butterworth and R.B. Thomson (South Africa)

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