Résultats de la recherche

1. An inter-laboratory comparison of ages estimated for Dissostichus eleginoides using otoliths

   otoliths by one reader from the Center for Quantitative Fisheries Ecology at Old Dominion University and ... one reader from the National Institute of Water and Atmospheric Research, without auxiliary ... information: the readers generally read the sections similarly, with 84.7% of the estimates falling within two ... years or less of each other. Variation in estimates between readers did not increase markedly with age ...

   Meeting Document : WG-FSA-99/56 : Auteur(s): J. Ashford (United Kingdom) and P. Horn (New Zealand)

2. BEACHED MARINE DEBRIS SURVEYS AND INCIDENCES OF SEABIRD/MARINE MAMMAL ENTANGLEMENTS AND HYDROCARBON SOILING AT BIRD ISLAND, SOUTH GEORGIA AND SIGNY ISLAND, SOUTH ORKNEYS, 2008-2009

   nine gentoo penguins, eight king penguins, two Antarctic fur seals and one wandering albatross were ... survey period. Entanglements of 19 Antarctic fur seals (7 involving packaging bands), two giant petrels ... , one wandering albatross and one gentoo penguin (all involving fishing line and/or hooks) were observed ... at Bird Island, while one entangled fur seal was seen at Signy Island. In total, 147 items of marine ...

   Meeting Document : WG-IMAF-09/09 : Auteur(s): C.M. Waluda (United Kingdom)

3. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2005/06

   -year experiment (SC-CAMLR-XXIV). One of the aims of the experiment was to simplify the administration ... toothfish and the associated bycatch. All SSRUs in the two subareas except for 881D and 882C have now been ... . The management of the SSRUs within the two subareas was changed for the 2006 season as part of a 3 ... of the fishery by having fewer catch limits. This appeared to be moderately successful, with only one ...

   Meeting Document : WG-FSA-06/29 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)

4. An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba

   animal has little effect upon length-weight relationships. The use of categories of sex and maturity ... prediction. Surprisingly, the stage of the moult cycle of the animal has little effect upon length-weight ... Universitat Kiel, Dusternbrooker Weg 20, 2300 Kiel, Federal Republic of Germany. Les relations publiees des ... prediccion. Sorpendentemente, la etapa del ciclo de muda del animal tiene poco efecto sobre las ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Auteur(s): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle

5. BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 2006/2007

   years in which no fisheries related debris was observed, one nylon fishing line and one snood were found ... Abstract:  During the seventeenth year of standardised beach surveys of man-made debris at Bird ... Island, South Georgia (covering the period 1 October 2006 to 30 September 2007) a total of 365 items were ... previous years: 73% during summer (265 items) and 27% during winter (100 items). After three consecutive ...

   Meeting Document : WG-FSA-08/24 : Auteur(s): F. Le Bouard (UK)

6. e-sc-xxxvi-a06.pdf

   ... Cic is the compensated two-hour catch, ∑Ci is the sum of two-hour catches over one 24-hour period and ... their intention to fish for krill, and two vessels withdrew from the fishery in all areas and one ... drafted two data collection methods, one for observations during fishing operations, and one for ... encountered when monitoring two different continuous gear types are outlined and discussed. One system application/pdf attached to:WG-EMM-17

   Meeting Report : WG-EMM-17

7. e-sc-xxxv-a05.pdf

   ... present, there is no routine report to users of how the database has been changed from one year to ... 486_2–4. Research block 486_1 was fished in one year only and catches were dominated by D. eleginoides ... . Poor ice conditions meant that research block 486_5 was accessible in only one year in four. The ... . A simulated population with parameters estimated from these data was projected 20 years into the application/pdf attached to:WG-SAM-16

   Meeting Report : WG-SAM-16

8. An index of per capita recruitment

   recruitment (PCR) is proposed such that where R 1 is the proportion of age-l animals sampled in year y and M ... in mortality and reduction in the proportion of age-l spawners. Introducing year-to-year random ... underestimate recruits per spawner by 30% if reasonable assumptions are made regarding the variability of ... spawners and recruits. PCR was also able to track cycles in recruits per spawner after a 20% random ... with one year of mortality removed: In addition to compounding the results of two PCRy_l ... appearing as a large mode at 20 to 30 mm length and in subsequent years as progressively longer length ... . Antarctic krill, however, appear to spend one to two years in the juvenile and sub- adult stages and may ... Islands conducted over the last two decades. Strong year classes are evident in this time series, first ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Auteur(s): Hewitt, R

9. Indices of prey availability near the Seal Island CEMP site: 1990 to 1996

   prey density, depth, distance from Seal Island, and persistence over time. Acoustic data from two AMLR ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... relative biomass of juvenile krill near Seal Island during the first survey of each year as compared to the ... biomass of post-spawning adults near Seal Island during the second survey of each year. It is hoped that ... Seal Island, and persistence over time. Acoustic data from two AMLR surveys each year were subsampled ... (Figures 3 and 4). Two surveys were selected for each year, details of which are listed in Table 1. For ... juvenile krill near Seal Island during the first survey of each year as compared to the biomass of post ... -spawning adults near Seal Island during the second survey of each year. It is hoped that these indices may ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Auteur(s): Hewitt, R.P., G. Watters and D.A. Demer

10. Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area

    comprised two year classes arising from spawning in the 1999/2000 and 2000/01 split-years. The mean width of ... 2001/02 year class lasted four months. This was estimated based on a retrospective count of daily ... increments. TL varied from 5.5 to 10.4 cm for fish in their first year (120–250 days) to 12.5–13.3 cm in 1 ... -year-old fish (477–533 days). The radius of the first annulus ranged from 0.7 to 1.3 mm. The ... the 1999/2000 (5 speci- mens) and 2000/01 (20 specimens) split-years. The 1999/2000 year class ... survey of juveniles in February–March 2002 on the South Georgia shelf. Juvenile fi sh comprised two year ... which the year is de- fi ned as the period from 1 July to 30 June of the next year (Shcherbich, 1975 ... , the specimens examined represented a mixture of two year classes which correspond to spawnings in ...

    Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Auteur(s): Shcherbich, L.V

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