Résultats de la recherche

1. Progress towards validation of ageing of Dissostichus eleginoides using otoliths

   annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ... techniques to analyse the daily marks at the centre of the otolith in order to pinpoint the position of the ... Abstract:  During tagging programmes for Dissostichus eleginoides at Heard and Macquarie Islands ... , fish have been treated with strontium to mark their otoliths for validation of subsequent age ...

   Meeting Document : WG-FSA-04/67 : Auteur(s): K. Krusic-Goluband R. Williams (Australia)

2. Evidence of two stocks of Champsocephalus gunnari in the South Georgia region, CCAMLR fishing Area 48.3

   Abstract:  In 1991, the 0 age-class of C. gunnari were sampled at Shag Rocks on 18 January, off ... between to 19 January to 19 February. The size- frequency of fish at Shag Rocks contained two modes of 31 ... combined samples off the coast of South Georgia were 24-63mm SL. The mean and median sizes of the fish at ... and those at South Georgia must be the result of different spawning seasons and/or egg development ...

   Meeting Document : WG-FSA-94/16 : Auteur(s): A.W. North (United Kingdom)

3. Robust characterisation of the age structure, growth and recruitment of toothfish in the Macquarie Island and Heard Island and McDonald Islands fisheries

   these fisheries. The inclusion of catch at age data is shown to substantially improve the precision of ... processing at the AAD indicates that initial set up of laboratory equipment and salaries are the main expense ... fishing industry provided funds to conduct high throughput ageing of toothfish otoliths. 5780 otoliths ... , collected during the 2000-2011 fishing seasons in Division 58.5.2 and outside the CCAMLR area at Macquarie ...

   Meeting Document : WG-FSA-12/P07 : Auteur(s): D.C. Welsford, S.G. Candy, J.J. Verdouw and J.J. Hutchins

4. Effects of different harvesting strategies on the stock of Antarctic icefish Champsocephalus gunnari around South Georgia

   fishing mortality (F0.1, Fmax, 2xFmax),- harvesting contantly at 50%F0.1 with an increase of F 3 or 6 ... years after a good recruitment,- pulse fishing at an interval of 3 years with no fishing in between;- a ... harvesting alternative. In the absence of regular recruit surveys constant fishing at F0.1 is most likely to ... be the most profitable and least risky harvesting strategy at present. The establishment of regular ...

   Meeting Document : SC-CAMLR-VIII/BG/47 : Auteur(s): Delegation of Federal Republic of Germany

5. On the problem of diurnal migrations of some fish species on the South Georgia shelf (Subarea 48.3)

   substantial variations in middle size fry of both species were found at different depth levels during 24-hour ... and within the whole water column at night. However major catches were taken within the limits of the ... Abstract:  The results of experiments on the South Georgia Shelf carried out in the period of 1986 ... to 1990 have been presented. Six (6) daily stations were occupied where vertical distribution of fry ...

   Meeting Document : WG-FSA-99/64 : Auteur(s): I.A. Trunov, J.A. Frolkina and M.P. Konstantinova (Russia)

6. Spatial and temporal variability in the fish diet of Antarctic fur seal Arctocephalus gazella in the atlantic sector of the southern ocean

   of Notothenia rossii (Richardson 1844) at South Georgia and Champsocephalus gunnari (Lönnberg 1905 ... /topography as well as variability at a range of time-scales that reflect environmental variability and ... Abstract:  The spatial and temporal variability in the fish component of the diet of Antarctic fur ... seals Arctocephalus gazella (Peters 1975) in the Atlantic sector of the Southern Ocean was examined ...

   Meeting Document : WG-EMM-06/P5 : Auteur(s): K. Reid, D. Davis, I.J. Staniland (United Kingdom)

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

   in the first 100 days of fish life was 6?k at fish length of 4 cm. By the 200th day the daily growth ... – 3.1?k at fish length of up to 11.8 cm, by the 500th day – 2.8?k at fish length of up to 12.5 cm. The ... Abstract:  On the basis of the results of the trawl-acoustic survey in February-March 2002, the ... microstructure analysis of otoliths of juvenile icefish of 5.5-13.3 cm in length was carried out. Fish studied ...

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

8. Further analysis of spatial patterns of benthic invertebrate habitats from fishery bycatch in the Ross Sea region

   evidence of VME taxa. Identifiable sponge and/or gorgonian habitats occurred at a typical scale of 10-30 km ... , but were at larger scales. Spatial analysis of these data allows the detectability of prevalent taxa ... to be estimated, along with changes in catch rate at different levels of observed bycatch. Results ... Abstract:  High resolution VME taxa bycatch data (at the longline segment level) have been ...

   Meeting Document : WG-FSA-10/30 : Auteur(s): S.J. Parker, R.G. Cole and S.M. Hanchet (New Zealand)

9. Revision of biological and population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a comprehensive survey of fishing grounds and recruitment areas in the region

   of Dissostichus eleginoides at Heard Island in the southern Indian Ocean and South Georgia Island in ... slower growing than those at South Georgia. This raises questions as to the appropriateness of the ... current range of natural mortality used in the assessment of yield at Heard Island. The revised estimates ... of recruitment indicate that the variability of recruitment at Heard Island is much greater than ...

   Meeting Document : WG-FSA-99/68 : Auteur(s): A.J. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)

10. The demersal fish communities of the shelf and slope of South Georgia and Shag Rocks (CCAMLR Subarea 48.3)

    Abstract:  Analysis of catch data from a deepwater trawl survey conducted at South Georgia and ... and is comprised largely of species endemic to the Southern Ocean and Scotia Sea. At increasing depths ... structure at South Georgia and Shag Rocks. Three distinct, depth stratified fish assemblages were observed ... .  The demersal fish assemblage found on the shelf to depths of around 400m is dominated by notothenids ...

    Meeting Document : WG-FSA-14/26 : Auteur(s): S. Gregory, M.A. Collins and M. Belchier (United Kingdom)

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