Résultats de la recherche

1. Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic

   Paper Title:  Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in ... the southwestern Atlantic Abstract / Description:  The diet of Patagonian toothfish (Dissostichus ... Argentinian continental shelf/slope, the length of D. eleginoides ranged from 30 to 95 cm total length (TL ... juvenile and adult stages, and ranged between 18 and 212 cm TL. The diets of fish of various sizes and both ... . (1996) found larvae in the Malvinas/Falklands current during spring (September-December), at depths of ... main line of 20 000 m, with branch lines each with 90 hooks (model 'Ancora', 30 mm gap) spaced at 1 m ... conducted at a mean depth of 240.5 m, and 80% of the trawls in which this species occurred were made ... around 53'30's and 40"-42'30'W (Shag Rocks area) at a mean depth of 176 m. Duhamel and Pletikosic (1983 ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Auteur(s): García de la Rosa, S.B., F. Sánchez and D. Figueroa

2. Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian toothfish fishery

   Paper Title:  Significant conservation benefits obtained from the use of a new fishing gear in the ... practically eliminated depredation of fish by killer whales (Orcinus orca) and sperm whales (Physeter ... macrocephalus). The performance of this fishing technique with regard to seabird mortality and depredation by ... the implementation of the modification. The number of seabirds killed in 2002 was 1 542 compared to ... off South America. On some lines hauled at the Prince Edward Islands, south of South Africa ... of the baited hooks at the end of the hook lines with the position of a weight. Buoy ~1 000 m ... world’s population, of black-browed alba- trosses (Thalassarche melanophrys) which breed at the Diego de ... placed at 40 m intervals (Figure 2a). Each of the vertical branch lines supports multiple short hook ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 79–91 : Auteur(s): Moreno, C.A., R. Castro, L.J. Mújica and P. Reyes

3. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region

   Paper Title:  Estimation of krill (Euphausia superba) mortality and production rate in the ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... abundance/biomass data exceeded a factor of 1:35, while inter-annual variability between available surveys ... reached only a factor of 1:1.6. Krill mortality was calculated by linearized catch curve analysis and ... sample. Total length (AT) was measured from the anterior margin of the eye to the tip of the telson to ... cruise, which also resulted at least five components. Results on the abundance of each age group are ... taken as an alternative way. This involves examining the age structure of the stock at one period in ... times, i.e. the winter stock was at a minimum level of 2.8% of the maximum observed summer stock. The ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Auteur(s): Siegel, V.

4. Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)

   Paper Title:  Distribution, biomass and characteristics of the Euphausia superba fishery around ... many aspects of its variability have been extensively described in scientific literature. A summary of ... variability and the wide range of biomass values obtained which in turn leads to uncertainty in interpreting ... variability in the scale of krill swarms and to attempt to determine more reliable values of its biomass after ... transport krill to the South Georgia area which is located at the northern edge of its habitat (Marr, 1962 ... result of South Georgia being located at the edge of the habitat area in unusually low latitudes for ... trawl was employed at each station. The cross-section of the trawl opening at the level where fine mesh ... density of E. superba in fished swarms (g/m3) was worked out according to the size of the catch taken at ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Auteur(s): Latogursky, V.I., R.R. Makarov and L.G. Maklygin

5. Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends

   Paper Title:  Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined ... with various codends Abstract / Description:  Selectivity properties of single and doubler-layer twine ... codends (mesh size 120 mm) and single-layer tape codends with a mesh size of 60 and 100 mm were determined ... . It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... 500 kilograms of fish, the investigated species constituted at least 20% of the total catch ... why small fish with lengths of 16-33 cm were retained at the same, equally high level in the double ... of small fish with a length of 20 and 21 cm at a 40-50% level and fish with a length of up to 35 cm ... first, depicting retention properties of fish up to 34 cm in. length at a - 12 - relatively high ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Auteur(s): Zaucha, J.

6. Status of the Polish FIBEX acoustic data from the West Atlantic

   Paper Title:  Status of the Polish FIBEX acoustic data from the West Atlantic Abstract ... acoustic target strength estimates of krill (SC-CAMLR, 1991a). This analysis indicated that the acoustic ... densities of krill in the oceanic parts of the Drake Passage were low (3 g m-2); however, the results also ... indicated that spatial variability was important and that parts of the shelf to the north of the South ... calibration at the time of FIBEX (BIOMASS, 1986). Calibration was undertaken on two separate occasions; the ... markedly from that of the Polish FIBEX MVBS values stored at the BIOMASS Data Centre which were heavily ... increase in density (4.86) derived from the assessment of all FIBEX cruises that collected data at 120 ... of krill advection within the region. At a smaller scale, however, such fluxes may not be minimised ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Auteur(s): Trathan, P.N., J. Kalinowski and I. Everson

7. Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?

   Paper Title:  Seabird by-catch by autoline vessels: do line setters increase the sink rate of ... . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without a ... line setter using a paired-treatment design. Sink rates of longlines set with and without a line setter ... distance, which amounted to about 100 s of setting time (at 6 knots 3.1 m s–1), was chosen to ensure the ... the anchor at the beginning of lines. The water entry times of each TDR were recorded to the ... structure. For each of these last two sub-models, separate variance parameters at each depth were combined ... of IW longlines is that IW lines (which are heavier than UW lines) deployed loosely and at a ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Auteur(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith

8. The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model

   Paper Title:  The sensitivity of multiple output statistics to input parameters in a krill ... Drake Passage. The model analysed here required 2 311 input values for each of four scenarios and ... the status of predator groups more than they affected statistics indicating the status of the target ... recruitment through pre-recruit mortality. A parameter mediating the effect of a forcing function on krill ... abundance at beginning of fishing period. Krill Whole model Health (II.3(b) maintenance of the ... abundance of the relevant component is <75% of the abundance in equivalent no-fishing trials at the end ... equivalent no-fishing trials at the end of the recovery period. Predators SSMU Services (II.2 the term ... (via environment) 0 to 1 κ κk,i,s Krill density at which predators achieve half of maximum ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Auteur(s): Hill, S.L. and J. Matthews

9. Review of length-weight relationships for Antarctic krill

   Paper Title:  Review of length-weight relationships for Antarctic krill Abstract / Description ... euphausiid species), are listed for ash-free dry weight, dry weight, and wet weight. The accuracy of length ... taken into account. The influence of seasonal changes on length-weight relationship parameters is ... discussed. Recommendations for possible uses of reviewed length-weight relationships are presented. File ... euphausiids. Most length measurements were made using total length AT (front of the eye to the tip of the ... WG-KRILL-92/1S REVIEW OF LENGTH-WEIGHT RELATIONSHIPS ... weight, dry weight, and wet weight. The accuracy of length-weight relationship calculations is improved ... when information on sex and dominant maturity stages is taken into account. The influence of seasonal ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Auteur(s): Siegel, V.

10. Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics

    Paper Title:  Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using ... otolith morphometrics Abstract / Description:  That the predominant by-catch of grenadier by the toothfish ... fishery in the Ross Sea region is comprised of two species, rather than being solely Macrourus whitsoni ... , was recognised in 2010 with the identification of a new species, M. caml. Grenadier are the main by ... species of grenadier in the Ross Sea region means that, at the time of writing, there are insufficient ... of grenadier otoliths from the Ross Sea fishery pres- ently stored at NIWA, Wellington, New Zealand ... by the length of the longlines in the toothfish fishery, i.e. 5–10 km. At this scale of sam- pling ... outside of the otolith each year (Figure 5). While M. whitsoni approaches full size at about 17 years ...

    Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Auteur(s): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott

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