Résultats de la recherche

1. New Antarctic deep-sea weird leech (Hirudinida: Piscicolidae): morphological features and phylogenetic relationships

   parasite of Whitson’s grenadier Macrourus whitsoni (Regan) (Macrouridae: Gadiformes) collected in the Ross ... tubercles on the venter and dorsal segmental tubercles, an uncommon appearance of its anterior sucker with ... earlike edges and an inner membrane around the mouthpore, well-developed musculature and a unique ... combination of features of the reproductive and digestive systems. The presence of uncommon tubercles can be ...

   Meeting Document : WG-FSA-18/P01 : Auteur(s): A. Utevsky and S. Utevsky

2. Dynamics of Antarctic penguin populations in relation to inter-annual variability in sea-ice distribution

   Abstract:  To investigate the role of sea ice cover on penguin populations we used principal ... regional (from remote sensing data) sea ice variables. Throughout the study period, the Adélie penguin ... apparent inverse density-dependent relationship between the number of Adélie breeding pairs and the number ... of eggs hatching. For both species, no general relationship was found between either population size ...

   Meeting Document : WG-EMM-96/10 : Auteur(s): Murphy, E.J., Croxall, J.P., Trathan, P.N.

3. Hydroacoustic data obtained around Elephant Island and South Orkney Islands during austral summer 2018

   Abstract:  This document presents the analysis of acoustic data obtained during the austral summer ... of 2018 as a complement to finfish research in Subareas 48.1 and 48.2 using bottom trawling nets. The ... frequency of 38 kHz and a SIMRAD ES70 fishing echosounder equipped with a 120 kHz frequency transducer. The ... geographical distribution of krill concentrations and the presence of fish shoals are described in an area of ...

   Meeting Document : WG-FSA-18/05 : Auteur(s): N.A. Alegría and P.M. Arana

4. Revisiting krill ageing method using eyestalk cuticles

   Abstract:  The development of a consistent and reproducible ageing method for krill is critical ... for improving the precautionary management of krill fisheries. The only method to date that has shown ... promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ... thin sectioning of the eyestalk cuticle. The mechanisms controlling the generation and retention of ...

   Meeting Document : WG-EMM-2019/45 : Auteur(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda

5. Counts of surface-nesting seabirds breeding at Prince Edward Island, summer 2001/02

   was no evidence that populations of these species had decreased. Indeed, the estimate of wandering ... Abstract:  The first midsummer survey of surface-nesting seabirds at Prince Edward Island was ... conducted during December 2001. It was also the first census for most species since the early 1980s. Despite ... concerns about the impacts of longline fishing mortality on various albatrosses and giant petrels, there ...

   Meeting Document : WG-EMM-03/9 : Auteur(s): P.G. Ryan, J. Cooper, B.M. Dyer, L.G. Underhill,R.J.M. Crawford and M.N Bester (South Africa)

6. Possibility of predicting sea-ice concentration (SIC) in research block (RB) 48.6-5 (Southern part of Subarea 48.6) using sea surface temperature (SST) in RB 48.6-2 (Northern part of 48.6)

   Abstract:  It  was  reported  at  WG-SAM-2019  that  the  sea  ice  concentration  (SIC) of RB ... 48.6-5 corresponded well with the dynamics of monthly sea surface temperature  (SST)  anomaly  in  RB ...   48.6-5.   However,  in  the  prediction  of SIC  in  RB  48.6-5  using  the  monthly  SST  anomaly ... , consequently there is very little information on the SIC during this period. However, the SST of RB 48.6-2 can ...

   Meeting Document : WG-FSA-2019/49 : Auteur(s): T. Namba, R. Sarralde, S. Somhlaba and J. Pompert

7. Report on Argentine CCAMLR Subarea 48.3 survey: fish

   cm for C. gunnari for the pooled data. No significant differences were found between males and ... Abstract:  Information on biological aspects of the finfish catches obtained in the survey of BIP ... Dr.  E L  Holmberg, conducted around Shag Rocks and the South Georgias Islands in April-May 2013, is ... brevicauda guntheri and Gobionotothen gibberifrons, the most frequents. The highest fish densities were found ...

   Meeting Document : WG-FSA-13/62 : Auteur(s): A. Zavatteri and A. Giussi (Argentina)

8. Diseases outbreak threatens Southern Ocean albatrosses

   Abstract:  Infectious diseases have the potential to cause rapid decline and extinction in ... vertebrate population and are likely to be spreading with increased globalisation and climate warming. In the ... Southern Ocean and in Antarctica no major outbreaks of infectious diseases have been reported, perhaps ... because of isolation and cold climate, although recent evidence suggest their presence. The major threat ...

   Meeting Document : WG-EMM-03/32 : Auteur(s): H. Weimerskirch (France)

9. Fishing gear, marine debris and oil associated with seabirds at Bird Island, South Georgia, 2002/03

   , black-browed and grey-headed albatrosses. In all cases, no more than about 1-2 % of the birds’ plumage ... associated with seabirds at Bird Island, South Georgia from 1 April 2002 to 31 March 2003. It is the tenth ... , though numbers of both decreased slightly since last year. The quantity of fishing gear associated with ... giant petrels (northern and southern) was the second highest on record, and included five cases of ...

   Meeting Document : SC-CAMLR-XXII/BG/09 : Auteur(s): Delegation of the United Kingdom

10. Density estimation of Antarctic krill (Euphausia superba) around South Shetland Island and Elephant Island (Subarea 48.1) using two frequencies with 38 and 120 kHz

    Abstract:  The density of Antarctic krill swarm inhabiting the Subarea 48.1, which includes the ... Elephant Island peripheries and the west and north of the South Shetland Island, was estimated using an ... in 2019. Krill were collected by the commercial midwater trawl fishing vessel. The data were ... ) each transects krill AT. The weighted krill density was estimated to be 4.27 g/m 2 (CV=43.42%) applying ...

    Meeting Document : SG-ASAM-2019/03 Rev. 1 : Auteur(s): S. Choi, S. Chung, I. Han, W. Oh, D. An and K. Lee

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