Resultados de la búsqueda

1. Annual variation in the timing of reproduction in Antarctic fur seals (Arctocephalus gazella) at Bird Island, South Georgia

   Abstract:  The arrival of Antarctic fur seals at a breeding beach on Bird Island. South Georgia ... established breeding territories on the beaches in anticipation of the arrival of the cows. Male arrival ... usually started when 80% or more of potential territory sites were occupied by males. Cows arrived ... significantly later in 1984 and 1987 than in 1983, 1985 or 1986. The late arrival of both males and females in ...

   Meeting Document : WG-CEMP-90/39 : Autor(es): C.D. Duck (United Kingdom)

2. On the intensity of sampling krill trawl catches

   of determining adequate sample size to obtain representative krill length frequency distributions ... from commercial catches. In addition, the possible effect of two other factors (within-trawl ... . The attention of WG-Krill is drawn to the following: * All measurements of length from commercial ... , meaningful account must be taken of the desired biological characteristics which the Group wishes to discern ...

   Meeting Document : WG-KRILL-90/27 : Autor(es): D.G.M. Miller (South Africa)

3. Distribution of Antarctic krill concentrations exploited by Japanese krill trawlers and minke whates

   Abstract:  The distribution of krill (Euphausia superba) concentrations derived from Japanese ... sectors. In early summer (December) the areas of operation for both fisheries were affected by the ... latitudinal position and shape of the pack-ice edge. Harvesting was frequently conducted in the vicinity of a ... distribution. Krill harvesting areas in the vicinity of the shelf breaks were often coincident with ...

   Meeting Document : SC-CAMLR-VIII/BG/31 : Autor(es): Delegation of Japan

4. A simulation study of krill fishing by an individual Japanese trawler

   Abstract:  A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample of ... response of the index, or a response rather smaller in relative magnitude than the biomass decline. Catch ... statistics collected at present (centred primarily on catch per fishing time) are of low utility in detecting ...

   Meeting Document : SC-CAMLR-VI/BG/38 : Autor(es): D.S. Butterworth (United Kingdom)

5. Stomach contents of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea region in 2010 and a comparison with 2003

   Abstract:  The stomach contents of 273 Dissostichus mawsoni captured by bottom longline in the ... in 640–2127 m depths and ranged between 78 and 181 cm TL. A total of 198 stomachs contained prey ... items, of which 13 contained only digested prey, leaving 185 stomachs for analysis. The majority of ... whitsoni) dominated the diet occurring in 37% of stomachs and accounting for 45% by weight and 52% by IRI ...

   Meeting Document : WG-FSA-10/22 : Autor(es): D.W. Stevens, J. Forman and S. Hanchet (New Zealand)

6. Decadal trends in abundance, size and condition of Antarctic toothfish in McMurdo Sound, Antarctica, 1972–2011

   Abstract:  We report the analyses of a dataset spanning 39 years of near-annual fishing for ... unit effort (CPUE) were derived from the > 5500 fish caught, the large majority of which were ... measured, tagged and released. Contrary to expectation, the length frequency of the McMurdo Sound catch was ... dominated by fish in the upper two-thirds of the overall distribution exhibited in the industrial catch for ...

   Meeting Document : WG-FSA-12/P04 : Autor(es): D.G Ainley, N. Nur, J.T Eastman, G. Ballard, C.L Parkinson, C.W Evans and A.L. DeVries

7. A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on recent survey results

   vicinity of Heard Island during April-May 2011. This paper provides a preliminary assessment of mackerel ... icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79 o 20 ... ’ E using standard CCAMLR methods. A pattern of 5 year classes being present simultaneously in the ... population, which was first detected in 2011, has persisted, however a large cohort of fish, estimated to be ...

   Meeting Document : WG-FSA-12/26 : Autor(es): D.C. Welsford (Australia)

8. Towards the development of a stock assessment for Patagonian toothfish in Division 58.4.4, SSRU C on Ob and Lena Banks

   assessment of stock status of D. eleginoides in SSRU C in Ob-Lena Banks was made using a CASAL catch-at ... MPD estimate of B 0 was 741 tonnes, and current biomass was 625 tonnes (84.4 % of B 0). MPD fits ... suggest suitable fits to the data, however, there appears to be a pattern of increasing YCS over the time ... , which is unlikely. Therefore, model where all of the YCS are fixed at 1 should be considered next time ...

   Meeting Document : WG-FSA-12/59 : Autor(es): K. Taki (Japan)

9. Revised diet composition and feeding strategy of Antarctic toothfish, Dissostichus mawsoni in SSRU 58.4.1.C-a for the 2012/2013 Korean exploratory longline fishery

   Abstract:  Stocks of Dissostichus mawsoni in Division 58.4.1 were vulnerable with a big range of ... managements. Therefore, the Korean scientists analyze diet composition and feeding strategy of Antarctic ... toothfish, Dissostichus mawsoni in SSRU 58.4.1.C-a as a part of Korean research plan for the exploratory ... longline fishery for Dissostichus spp. in SSRUs of 58.4.1 C and E during 2012/2013 season.  This study was ...

   Meeting Document : WG-FSA-13/43 : Autor(es): I. Yeon, Y.J. Kwon, S.G. Choi, K.J. Seok, D.W. Lee, J.M. Jeong, S.J. Ye, H.J. Kim and G.W. Baeck (Republic of Korea)

10. Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.2

    Abstract:  The current season (2014/15) is the final one of the first three-season research which ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... x seabed analogy method using updated CCAMLR C2 data and reference area sizes. The occurrence of ... juvenile fish for each ice shelf block suggests that the recruitment occurs along the ice-shelf zones of ...

    Meeting Document : WG-SAM-15/04 : Autor(es): Delegation of Japan

Páginas