Résultats de la recherche

1. Length-age composition of icefish (Champsocephalus gunnari, perciformes, notothenioidei, Channichthyidae) from different locations of South Georgia Island subarea

   Ch.gunnari length-age composition structure at early years of life for fish inhabiting areas to the south of ... Eastern, Northern, Western, Southern Island Shelf and near Shag Rocks allowed for revealing similarity of ... Island and near Shag Rocks and finding a difference between those two groups and the eastern group ... . Larger number of "mature" fish in the west is related to migration from eastern area of ...

   Meeting Document : WG-FSA-00/32 : Auteur(s): Zh.A. Frolkina (Russia)

2. Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea

   tagged fish having at least one tag remaining after one year at liberty; 98.9% after two years at liberty ... Abstract:  The rate at which tags are lost from tagged toothfish is an important parameter in ... individual tags are lost from tagged toothfish in Subareas 88.1 and 88.2 from a sample of 969 double tagged ... ) of individual tags were lost almost immediately, and then there was an ongoing rate of about 0.039 ...

   Meeting Document : WG-SAM-11/18 : Auteur(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)

3. Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001

   high krill abundance and the high recruitment index reflect the end of a succession of years with poor ... small size classes, one year old juvenile krill was found. Krill density was significantly higher than ... proportional recruitment index for the entire survey area for the 1999/2000 year class was R1 = 0.573, and the ... for a successful spawning season, was G = 0.99, indicating an early initiation of the spawning season ...

   Meeting Document : WG-EMM-01/10 : Auteur(s): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)

4. Do Adélie penguin fledgling weights provide an index of prey availability?

   the end of the breeding season were more strongly correlated with later foraging trips than with ... to two assumed proxies of prey availability: breeding success and foraging trip duration. Concordance ... between the two proxies was apparent when considering guard stage foraging trip durations but this was not ... throughout the breeding season resulting in good breeding success with heavy fledglings or poor breeding ...

   Meeting Document : WG-EMM-05/21 : Auteur(s): L. Emmerson, C. Southwell and J. Clarke (Australia)

5. Upward adjustments to local catch limits for the krill fishery in Subarea 48.1

   values, agrees generally with expert opinion, and suggests that indices of foraging trip duration, fledge ... detect within-season increases in krill biomass. Thus, a ratio of late to early summer krill biomass ... green, the ratio of late-summer to early-summer estimates of krill biomass from acoustics surveys ... the gSSMUs defined in another compilation of vignettes (AERD 2016a, pp. 3-13).  We propose upward ...

   Meeting Document : WG-EMM-16/47 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

6. Diet and foraging effort of Adélie penguins in relation to pack-ice conditions in the southern Ross Sea

   years when pack ice was sparse. Foraging trip duration differed by colony, season and year and was ... colony, seasons and year. Diet differed among colonies only slightly. The fish Pleuragramma antarcticum ... present. With respect to krill, which composed the remainder of diet, juvenile Euphausia crystallorophias ... were consumed predominantly in a year of heavy pack-ice cover; more adult krill were consumed in two ...

   Meeting Document : WG-EMM-98/15 : Auteur(s): D.G. Ainley (USA), P.R. Wilson, K.J. Barton (New Zealand), G. Ballard, N. Nur (USA) and B. Karl (New Zealand)

7. By-catch of rays in the 2002/03 toothfish fishery around South Georgia

   from all observers’ tally periods on the catch rates of rays cut off the line; • In 2003 the UK, with ... the number of rays that were likely to have died as a result of being caught on longlines using a ...

   Meeting Document : WG-FSA-03/58 : Auteur(s): D.J. Agnew, J. Pearce and M. Endicott (United Kingdom)

8. The diet of Antarctic fur seals Arctocephalus gazella during the breeding season at South Georgia

   , the most numerous- fish taxon, 98% were taken between early February and the middle of March ... around South Georgia. The absence of group 3 krill (44-48 mm in length) in the South Georgia area, as ... pattern in three of the four years studied. Of the total number of the myctophid Protomyctophum choriodon ... diet studies to be conducted during the entire pup-rearing periods of several years. Author(s ...

   Meeting Document : WG-EMM-95/28 : Auteur(s): Arnould, J.P.Y., Reid, K.

9. Preliminary assessment of the South Georgia toothfish stock, 2007

   estimates year class strength which corresponds, in some years, with estimates made from the South Georgia ... retardation than larger fish, and that on average it is 1 year or more. 3. A new model is developed which uses ... ). Fits of all data (CPUE; catches at length for the early fishery; catches at age for the later fishery ... Abstract:  1. The catch-at-length based CASAL model for toothfish at South Georgia is updated with ...

   Meeting Document : WG-FSA-07/29 : Auteur(s): D.J. Agnew, R. Hillary and J. Pearce (United Kingdom)

10. Updated models of the habitat use of Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau around Heard Island and the McDonald Islands (Division 58.5.2)

    (Dissostichus eleginoides) in the CCAMLR area, with landings of  >5000 t.yr-1 from the French EEZ (Division ... sex composition, when controlling for gear selectivity, year and sex effects. Fish length increased ... with depths suggesting spatial segregation of life stages. Spatial predictions showed that small ... larger fish inhabit deeper waters (>1500m) especially on the eastern part of the Plateau, where the ...

    Meeting Document : WG-FSA-14/42 : Auteur(s): C. Péron and D.C. Welsford (Australia)

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