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Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia
Paper Title: Experimental evaluation of the effectiveness of weighting regimes in reducing ... seabird by-catch in the longline toothfish fishery around South Georgia Abstract / Description: A series ... of experiments was carried out in February 1999 at South Georgia (Subarea 48.3) to examine the ... effects of different weighting regimes on the incidental mortality of birds caught on longlines fishing ... or the number of black- browed albatrosses killed. RESULTS Experimental Results No practical ... results is presented later in the paper (Table 4). No empirical measurements of line sink rates were ... influencing the number of birds caught. As before, environmental variables had no influence either. The only ... albatrosses alone was considered, the weighting regime in the second experiment was shown to have had no ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Autor(es): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes
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Population genetic structure of Patagonian toothfish in the West Indian Ocean sector of the Southern Ocean
Paper Title: Population genetic structure of Patagonian toothfish in the West Indian Ocean sector ... of the Southern Ocean Abstract / Description: Molecular markers were used to investigate the stock ... structure of Patagonian toothfish (Dissostichus eleginoides) in the West Indian Ocean sector of the Southern ... per collection ranged from 0.000 to 0.900 and allele counts from 1 to 21. There was no evidence of ... within). In a recent genetic study by the authors, no signifi cant differentiation between Macquarie ... are contigu- ous with water no deeper than 600 m separating the two areas (Williams et al., 2002). In ... - tion (considering microsatellite loci jointly) among the four collections showed no signifi cant ... the West Indian Ocean sector col- lections was accounted for within samples. Thus, no signifi cant ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 21–32 : Autor(es): Appleyard, S.A., R. Williams and R.D. Ward
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Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory
concentrations of the diatom Phaenodactylum tricornutum in the laboratory Abstract / Description: Juvenile ... juvenile krill increased, up to a concentration of 1.0 mgC 1 –1. No further effect of food concentrations ... 0.047 mm day –1, which is too slow to support the hypothesised 2-year life-span of this animal in the ... field. Growth conditions of krill in the Southern Ocean are discussed, with special reference to the ... OF JUVENILE ANTARCTIC KRILL FED DIFFERENT CONCENTRATIONS OF THE DIATOM PHAENODACTYLUM TRICORNUTUM IN ... THE LABORATORY T. Ikeda, P.G. Thomas (Australia) Abstract Juveni,le Antarctic krill (Euphausia ... to a concentration of 1.0 mgC 1-1 • No further effect of food concentrations on IP or 6BL was seen ... slow to support the hypothesised 2-year life-span of this animal in the field. Growth conditions of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Autor(es): Ikeda, T. and P.G. Thomas
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Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands
Paper Title: Histological study on the ovarian development of mackerel icefish (Champsocephalus ... gunnari) from the South Georgia Islands Abstract / Description: A histological analysis was carried out ... on ovarian development in Champsocephalus gunnari caught by the RV Dr Eduardo L. Holmberg in the ... using microscopes (microscopical scale) was elaborated and adapted to correspond with the macroscopic ... indicates that no immature elements are incorporated into the cohort of yolky oocytes that will be ... O N THE OVARIAN DEVELOPMENT OF MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARn FROM THE SOUTH GEORGIA ... histological analysis was carried out on ovarian development in Charnpsocephalus gunnari caught by the RV Dr ... Eduardo L. Holrnberg in the South Georgia and Shag Rocks areas in February and March 1994. Six phases of ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Autor(es): Macchi, G.J. and E.R. Barrera-Oro
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A functional division of Electrona carlsbergi (Tåning, 1932) area of habitat in relation to the latitudinal zonation of the Southern Ocean
relation to the latitudinal zonation of the Southern Ocean Abstract / Description: During the cruise of ... the RV Vozrozhdenie (VNIRO, USSR) in March/April 1990 an integrated study survey was conducted in the ... Southern Atlantic along two meridional transects at 17° and 20°W in the latitudes from 37°30' to 55°30 ... 'S. The survey was mainly focussed on studies of distribution of adult and pre-spawning Electrona ... ! como individuos en distintas fases de maduracion gonadal. 1. AIMS AND TASKS The search for new ... equal numbers, occur in the southern part of the S AZ (haul No. 58). Females with fourth and fifth ... this zone (e.g., one specimen with third stage gonads was found in haul No. 50). In addition to the ... CARLSBERGI (TANING, 1932) AREA OF HABITAT IN RELATION TO THE LATITUDINAL ZONATION OF THE SOUTHERN OCEAN ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 369–395 : Autor(es): Zemsky, A.V. and S.A. Zozulya
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An assessment of the impact of krill fishery on penguins in the South Shetlands
Paper Title: An assessment of the impact of krill fishery on penguins in the South Shetlands ... Abstract / Description: An assessment of the competition between the Japanese krill (Euphausia superba ... ) fishery and penguins during the penguins' breeding season (December to March) in the South Shetland ... Islands (Subarea 48.1) was made based on available information on the fishery, penguins and krill. The ... . Due to the lack of data, no account is taken of temporal changes in foraging intensity for each ... Agnew (1992). The largest colonies o f chinstraps are located in the areas where little or no ... or space for nest sites. According to the sea-ice maps (Zwally et al., 19831, Low Island is located ... CCAMLR Science, Vol. 1: 107-128 AN ASSESSMENT OF THE ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Autor(es): Ichii, T., M. Naganobu and T. Ogishima
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New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands
Paper Title: New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of ... the Kerguelen Islands Abstract / Description: Combined studies on the inner and outer northeastern ... part of the Kerguelen shelf during the 1989/90 to 1993/94 period provide new information on the stock ... the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... be identified as being located on the northeastern part of the inner shelf. However, no information ... period extending from October 1989 to June 1994. No fishing took place for the months for which there ... ); however, in autumn 1989/90 and the summers of 1990/91 and 1991 /92 no surveys were conducted for ... logistic reasons. The outer shelf has not been investigated (no fishery) during autumn 1989 /90, autumn ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Autor(es): Duhamel, G
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Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999
scattered throughout the water column, however no clear evidence of vertical migrations was found. Between ... commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999 Abstract ... / Description: The distribution and internal structure of commercial krill concentrations were investigated in ... the areas of the South Shetland, Elephant, South Georgia and South Orkney Islands in the spring and ... throughout the water column, however no clear evidence of vertical migrations was found. Between February ... , no commercial krill concentrations were observed in the Elephant Island area, while they were ... studies, no large krill concentrations suitable for exploitation were observed in the South Orkneys area ... in 1997. The size of krill caught during the day varied at all depths (Figures 7 to 9), and no ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Autor(es): Jackowski, E
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Areas of seabed within selected depth ranges in the South-West Atlantic and Antarctic Peninsula regions of the Southern Ocean
Paper Title: Areas of seabed within selected depth ranges in the South-West Atlantic and ... Antarctic Peninsula regions of the Southern Ocean Abstract / Description: Data were tabulated for FAO sub ... these categories. Areas estimated from admiralty charts were expressed as percentages for the following ... . there is no overlap in the area measured). * I. Everson, Areas of Seabed within Selected Depth Ranges ... SELECTED DEPTH RANGES IN THE SOUTH-WEST ATLANTIC AND ANTARCTIC PENINSULA REGIONS OF THE SOUTHERN OCEAN 1 ... estimated from admiralty charts were expressed as percentages for the following depth ranges : 0-50, 50 ... estimadas en base a cart as de almirantazgo fueron expresadas como porcentajes para 10s siguientes rangos ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 49-73 : Autor(es): Everson, I.
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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 ... Chilean Patagonian toothfish fishery Abstract / Description: A new fishing technique, adapted from the ... artisanal trotline fishery for Patagonian toothfish (Dissostichus eleginoides) in Chile is described. The ... macrocephalus). The performance of this fishing technique with regard to seabird mortality and depredation by ... catch, or the aggregation of individuals around the ves- sel with no apparent connection to fishing ... lines, night setting, line weighting, discharging all offal on the opposite side of the hauling bay of ... streamer lines, using the new Chilean longline the same results were found in both treatments; no birds ... ). The results for 2006 were absolute; no birds were killed from an effort of almost 4 million hooks ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 79–91 : Autor(es): Moreno, C.A., R. Castro, L.J. Mújica and P. Reyes