Résultats de la recherche

1. Foraging energetics of Antarctic fur seals in relation to changes in prey availability

   account for the observed between-year difference in at-sea FMR of C. ursinus while foraging-trip duration ... lactating female Antarctic fur seals, Arctocephalus gazella, foraging at sea was measured in two years using ... doubly labeled water at South Georgia Island. There was no difference between years in mass gain, water ... influx, mass-specific field metabolic rate (FMR), or absolute FMR. Mean at-sea FMR over both years was ...

   Meeting Document : SC-CAMLR-VIII/BG/13 : Auteur(s): Delegation of United Kingdom

2. Population demography of Antarctic fur seals: the costs of reproduction and implications for life-histories

   population size. 4. There was no evidence of senescence. Survival rate was not related to year of birth or ... age, after accounting for variation due to pregnancy and calendar year. Survival was reduced as a ... animals having been pregnant in the previous year. 6. Reproduction incurs costs to females, in terms of ... consecutive years, including 3 years when several indices showed that food availability was well below average ...

   Meeting Document : WG-EMM-95/26 : Auteur(s): Reid, K., Croxall, J.P., Lunn, N.J., Boyd, I.L.

3. Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel

   dramatically over its 30- to 40-year history. The present annual catch in the Atlantic sector of the Southern ... scientific use when the vessel is new. In general, space for a 20 ft container laboratory van would be ... accommodate 20 scientific crew on longer cruises. The vessel will have a dedicated fibre optic network for ... given sub- stantial attention in recent years (ICES, 2007; Abe et al., 2011; Skaret et al., 2012). Much ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Auteur(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins

4. Biomass, abundance and distribution of fish in the Kerguelen Islands EEZ (CCAMLR Statistical Division 58.5.1)

   10.21 0 10 000 20 000 30 000 40 000 50 000 To nn es TOP ANI NOS NOR BEA BYR MCC LIC Species ... 1987 and 1988 (SKALP surveys; see Duhamel, 1993a), nearly 20 years after the beginning of fish- ery ... - ric range of the species. The standard duration of a trawl was 30 min on the ground (bottom ... from 6 September to 9 October 2006 (with two stations on 19 and 20 October 2006) in the whole area of ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 1–32 : Auteur(s): Duhamel, G. and M. Hautecoeur

5. A Comparison Between Age Determinations of the Antarctic Fish Notothenia gibberifrons Lönnberg Using Scales and Otoliths

   were interpreted 60% of scale readings and 30% separate and simultaneous interpretations. Estimates of ... derived from scales are approximately 30% greater than predictions utilising age data derived from ...

   Meeting Document : WG-FSA-89/13 : Auteur(s): R. Coggan (United Kingdom), K. Skora (Poland), A. Murray and M. White (United Kingdom)

6. A brief outline of the biology of the Antarctic silverfish, Pleuragramma antarcticum Boulenger, 1902 (Nototheniidae) from the Antarctic Indian Ocean

   three relatively isolated groups. Fish aged from 0+ to 3+ years live in the epi- mesopelagic zone where ... there are macro aggregations of plankton, while fish aged from 3+ to 12+ years form near-bottom, pelagic ... when they reach 13-16 cm in length and 4-6 years of age. Males reach maturity at 12-18 cm in length and ... 4-7 years of age. The potential absolute and relative fertility of this species is one of the ...

   Meeting Document : WG-FSA-92/11 Rev. 1 : Auteur(s): V.V. Gerasimchuk (Ukraine)

7. Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate

   1971-1973 was 7.41 (SE = 0.26) years and in 1988 it was 6.93 (SE = 0.20) years. After correction for ... age-dependent arrival time at the pupping beach in 1988, the mean age was 6.22 (SE = 0.14 years ... -1972. Exponential models fitted to the frequency distribution of age-classes greater than age 5 years ...

   Meeting Document : WG-CEMP-91/21 : Auteur(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)

8. A preliminary assessment of age and growth of eel cod (Muraenolepis sp.) and violet cod (Antimora rostrata) in the Ross Sea, Antarctica

   estimated age of 9.5 years. Von Bertalanffy parameters derived from female and unsexed fish only are: L ... ., 42.8 cm TL; K, 0.408 y-1; t0,-0.1 years. Violet cod are relatively long-lived, with a maximum estimated ... age of 41.5 years. Von Bertalanffy parameters derived from female and unsexed fish only are: L., 78.4 ... cm TL; K, 0.053 y-1; t0, 0.1 years. Author(s):  P.L. Horn and C.P. Sutton (New Zealand) Title:  A ...

   Meeting Document : WG-FSA-10/19 : Auteur(s): P.L. Horn and C.P. Sutton (New Zealand)

9. Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87

   biomass density of C. gunnari stock. High biomass density appeared with 2-4 year intervals after ... recruiting an abundant year-class to the exploited stock. The biomass of other bottom species is more stable ... years, this year class might keep catches in the 1986/87 and the following season at a high level. To ... the biomass density of C. ~ari stock. High biomass aensity appeared with ~year intervals after ... recruiting an abundant year-class to the exploited stock. The biomass of other bottom species is more ... by high biomass densities was quite different. In both of them, 3-year old fish predominated ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Auteur(s): Mucha, M. and W. Ślósarczyk

10. Evaluation of Antarctic krill biomass and distribution off the South Orkney Islands 2011-2015

    coverage in all years except 2013. The results show that except from the year 2015, krill densities were ... . 8 million tons of krill within the stratum in the peak year 2014. There were also consistently ... assessments, but the frequencies operated varied between vessels and years. In addition, the survey coverage ... has varied between years in particular due to ice. In order to allow for comparison of distribution ...

    Meeting Document : WG-EMM-15/54 : Auteur(s): G. Skaret, B.A. Krafft, L. Calise (Norway), J. Watkins (UK), R. Pedersen and O.R. Godø (Norway)

Pages