Résultats de la recherche

1. Preliminary report from New Zealand research voyages to the Balleny Islands in the Ross Sea region, Antarctica, January to March 2006

   decision to send two separate research voyages to the Balleny Islands, located north of the Ross Sea, in ... for New Zealand’s approach to the Balleny Islands. This paper provides a preliminary summary of the ...

   Meeting Document : WG-EMM-06/31 : Auteur(s): B.R. Sharp (New Zealand)

2. THE HISTOLOGICAL ANALYSIS OF OOGENESIS AND MATURITY OF ANTARCTIC TOOTHFISH FROM THE ROSS SEA

   showed a slow increase in oocyte diameter. It was obtained that for Antarctic toothfish during the ... contained two groups of vitellogenous oocytes. The large oocytes of the nearest spawning season with average ...

   Meeting Document : WG-FSA-09/26 : Auteur(s): S.V. Piyanova and A.F. Petrov (Russia)

3. Results of study of the oogenesis characteristics of Antarctic toothfish (Dissostichus mawsoni Norman 1937) (Nototheniidae) from Subareas 88.1 and 88.2 (Ross Sea)

   toothfish ovaries from the stages II to IV show a slow increase in oocyte diameter. It was shown that for ... were dominated. Their ovaries contained three size groups of oocytes: cytoplasmic group and two groups ... ; consequently Antarctic toothfish was not matured for spawning in the Ross Sea during the investigation period ...

   Meeting Document : WG-FSA-07/49 : Auteur(s): S. V. Piyanova and A.F. Petrov (Russia)

4. Censuses in the northernmost colony of Emperor penguin (Aptenodytes forsteri) in the tip of the Antarctic Peninsula at Snow Hill Island, Weddell Sea, Antarctica

   . We conducted a census of adult individuals using aerial photographs taken from an aircraft flight ... over the colony during the 2013 breeding season. Likewise, we explored the colony by land, making an ... situated on the south coast of Snow Hill Island, constituting the northernmost colony known in Antarctica ...

   Meeting Document : WG-EMM-14/56 : Auteur(s): M. Libertelli and N. Coria (Argentina)

5. Squeezed from both ends: Decline in Antarctic fur seals in the South Shetland Islands driven by both Top–down and Bottom–up processes

   .  This has led to an under emphasis of the role of bottom-up drivers for controlling fur seal production ... Antarctic bottom-up processes are widely cited for explaining penguin population declines, whereas for ... Antarctic fur seals, top-down processes are most cited as the primary driver for declining pup production ... production estimates from 2002-2012 for Cape Shirreff, Livingston Island.  Age-specific natality rates are ...

   Meeting Document : WG-EMM-14/39 : Auteur(s): M.E. Goebel and C.S. Reiss (USA)

6. Modelling growth of Antarctic krill: growth trends with sex, length, season, and region

   seasonal trend for each region. Smaller krill exhibited higher growth rates and a progressive decrease in ... years accumulation of instantaneous growth rate (IGR) measurements were modelled using a Linear Mixed ...

   Meeting Document : WG-EMM-05/29 : Auteur(s): S. Kawaguchi, S. Candy, R. King (Australia), M. Naganobu (Japan) and S. Nicol (Australia)

7. Otolith microstructure of juvenile fish, the first annulus radius and pelagic stage duration of icefish Champsocephalus gunnari (Channichthyidae) in the South Georgia area

   represent a mixture of two year-classes of 1999-2000 and 2000-2001. The mean width of the daily growth zone ... resulting age-length ratio can be used in separation of adjacent year-classes during juvenile fish surveys ... . The length of the young-of- the-year varies within a broad range as a result of prolonged spawning ... age of 120 – 250 days. The length of 1-year-old fish (1+) by the end of the second summer of fish life ...

   Meeting Document : WG-FSA-03/75 Rev. 1 : Auteur(s): L.V. Shcherbich (Russia)

8. A review of tag-based stock assessments of the Antarctic toothfish Dissostichus mawsoni in Subarea 48.4

   data available for this species in 48.4. During a review of assessment methodology two main issues have ...

   Meeting Document : WG-FSA-15/44 : Auteur(s): N. Walker, M. Soeffker, V. Laptikhovsky and T. Earl (United Kingdom)

9. Regional catch analysis of the longline fishery of Dissostichus eleginoides (Pisces: Nototheniidae) in Chile

   statistics published by the SERNAP (National Fishery Service). It shows that activity has lasted few years in ... that, during the last years, a worrying by catch of factory boulterer vessels dedicated to the austral ...

   Meeting Document : WG-FSA-91/10 : Auteur(s): C. Lemaitre, P. Rubilar, P. Gebauer and C.A. Moreno (Chile)

10. Change in environmental conditions of the Southern Ocean observed by satellites and data-assimilating models between 1981 and 2019

    ) from the AVHRR series of NOAA satellites (1981–2019); (3) spatial gradient of SST (as an indicator of ... Status:  Content Approved Document Release Consent:  No Delegation responsibility for releasing documents ... Sea sector and on the Antarctic continental shelf; (5) gradual loss of sea-ice in the Amundsen Sea and ...

    Meeting Document : WG-EMM-2019/39 : Auteur(s): M. Pinkerton

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