Résultats de la recherche

1. Spatio-temporal variability in the winter diet of larval and juvenile Antarctic krill, Euphausia superba, in ice-covered waters

   Abstract:  Antarctic krill Euphausia superba is an ecological key species in the Southern Ocean ... and a major fisheries resource. The winter survival of age class 0 (AC0) krill is susceptible to ... changes in the sea-ice environment due to their association with sea ice and their need to feed during ... limited. We studied the spatio-temporal variability of the diet in 4 cohorts of AC0 krill in the Northern ...

   Meeting Document : WG-EMM-18/P18 : Auteur(s): F.L. Schaafsma, D. Kohlbach, C. David, B.A. Lange, M. Graeve, H. Flores and J.A. van Franeker

2. A new fishing gear in the Chilean Patagonian toothfish fishery to minimise interactions with toothed whales with associated benefits to seabird conservation

   Abstract:  We describe a new fishing technique, called the Chilean system, adapted from an artisan ... fishery for Patagonian Toothfish. The artisan system was modified to include a net sleeve that is placed ... whales. In addition to this, each 15 m-long vertical line carry a weight at the end, this sinks baited ... hooks at up to 0.80 m/sec. This fast sink rate causes the line to sink immediately behind the vessel ...

   Meeting Document : WG-FSA-07/14 : Auteur(s): C.A. Moreno, R. Castro, L.J. Mujica and P. Reyes (Chile)

3. A compilation of parameters for a krill–fishery–predator model of the Scotia Sea and Antarctic Peninsula

   Abstract:  We describe the compilation and derivation of parameters for use in krill-fishery ... -predator models of the Scotia Sea – Antarctic Peninsula region. The primary aim is to provide input for the ... model developed by Watters et al. (2006), which we use to define the required parameters. However, these ... parameters should be applicable to other models of the system. Our methods include the use of weighted ...

   Meeting Document : WG-EMM-06/30 Rev. 1 : Auteur(s): S. Hill, K. Reid, S. Thorpe (United Kingdom), J. Hinke and G. Watters (USA)

4. Comparison of census methods for black-browed albatrosses breeding at the Ildefonso Archipelago, Chile

   the Ildefonso Archipelago, Chile, for > 90 years the population has never been censused using ... scientifically defendable methods. To estimate population size, and examine the accuracy and practicality of ... various census methods, the population was censused in the 2002/03 breeding season using a) ground-truthed ... -distance sampling. Compared to ground-truthed aerial photography (judged the most accurate) yacht-based ...

   Meeting Document : WG-FSA-06/12 : Auteur(s): G. Robertson, K. Lawton (Australia), C.A. Moreno (Chile), R. Kirkwood (Australia) and J. Valencia (Chile)

5. Preliminary assessment of long-term yield of Patagonian toothfish (Dissostichus eleginoides) for the Heard Island region (CCAMLR Division 58.5.2) based on a random stratified trawl survey in June 2005

   58.5.2 in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. It also ... considers the sensitivity of the assessment to (i) further consideration of the survey series and the ...

   Meeting Document : WG-FSA-05/30 : Auteur(s): A.J. Constable, T. Lamb and R. Williams (Australia)

6. Notification of research-in-progress in an Australian tuna fishery of relevance to the conservation of Convention Area seabirds

   Abstract:  This purpose of this document is to inform CCAMLR of work-in-progress in the Australian ... eastern tuna and billfish fishery (ETBF) of potential relevance to the conservation of Convention area ... seabirds. The research plan includes (a) a line weighting experiment on a chartered tuna vessel to ... determine the effect of line weighting regimes and bait type on the sink rate of longlines. This experiment ...

   Meeting Document : WG-FSA-05/13 : Auteur(s): G. Robertson, B. Wienecke, K. Lawton and B. Baker (Australia)

7. Variation in standing stock of the mackerel icefish Champsocephalus gunnari at South Georgia

   Abstract:  1. Bottom trawl surveys on the South Georgia shelf indicate episodic declines in the ... abundance of the mackerel icefish Champsocephalus gunnari that, since 1990, are not directly attributable to ... commercial fishing. 2. The greatest effect has been observed in years when krill are known to have been ... scarce on the South Georgia shelf. 3. It is thought that C. gunnari survivorship is closely related to ...

   Meeting Document : WG-FSA-99/63 : Auteur(s): I. Everson, G. Parkes (United Kingdom), K.-H. Kock (Germany) and I. Boyd (United Kingdom)

8. ANALYSIS OF ICE-FISH (CHAMPSOCEPHALUS GUNNARI) SPATIAL DISTRIBUTION FOR OPTIMIZATION OF THE BOTTOM TRAWL SURVEY SAMPLING

   Abstract:  Acoustic and trawl samples obtained in the near-bottom layers covered by bottom trawl ... surveys in the South Georgia area are analyzed. The high heterogeneity of horizontal and vertical fish ... distribution in the near-bottom layers within the surveyed area is shown. Influence of this fish distribution ... heterogeneity on trawl surveys efficiency and reliability is analyzed by simulating the impact on fish biomass ...

   Meeting Document : WG-SAM-09/20 : Auteur(s): S.M. Kasatkina (Russia)

9. Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological investigations

   Abstract:  Poland began krill fishing operations in the 1976/1977 season. It has been engaged in ... krill commercial fishery since the 1986/1987 season. Maximum catches, equalling 15.9 thous tonnes. were ... , attained in the 1992/1993 season. The report presents an analysis of Polish krill catches in the 1991/1992 ... and 1992/1993 seasons. CPUEs by month in individual subareas of the Atlantic sector of the Antarctic ...

   Meeting Document : WG-Krill-94/09 : Auteur(s): J. Sosinski and Z. Cielniaszek (Poland)

10. A brief exploitation of the stone crab Lithodes murrayi (Henderson) off south west Africa, 1979/80

    Abstract:  The stone crab Lithodes murrayi was exploited briefly off South West Africa between ... November 1979 and April 1980, the fishery being terminated when the catch per unit effort fell to an ... uneconomic level. The extent of the L. murrayi grounds is examined on the basis of catch-per-unit-effort data ... . The species is largely confined to a bathymetric corridor of 500–700 m off South West Africa. Prior to ...

    Meeting Document : WS-CRAB-93/21 : Auteur(s): R. Melville-Smith (South Africa)

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