Search results
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Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel
of krill has varied dramatically over its 30- to 40-year history. The present annual catch ... exploit high concentrations of krill found in coastal and shelf areas. CCAMLR man- agement is still ... in most other harvested ecosystems, difficult. For CCAMLR to maintain its ecosystem-based man- agement ... in resource surveying has been given sub- stantial attention in recent years (ICES, 2007; Abe et al., 2011 ... solutions exemplified with a new vessel Abstract / Description: The climate-induced changes presently seen ... in the ecosystems of the Antarctic region require a precautionary approach with respect to the human ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Author(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins
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Diurnal variations in biological characteristics of krill, Euphausia superba Dana, to the west of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by a biologist-observer
to the middle of June, 1990 (Table 1). At each station a series of catches was made using a standard commercial ... other. In the eastern area, where all other stations were carried out, diurnal variations ... . A very different pattern emerged at Station IV. Agreement between curves occurred in the middle ... unchanged in the middle of the night (in spite of a considerable increase in trawling depth). Finally ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 201–222 : Author(s): Vagin, A.V., R.R. Makarov and L.L. Menshenina
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
, growth and maximum size of Antarctic notothenioid fish - revisited. In: di Prisco, G., E. Pisano ... deposition typically takes more than a year (Everson et al., 1996), with the final maturation process ... and 1997 calendar years were prepared by the CCAMLR Data Manager and provided for the purpose ... with terms to allow for separate values of L,,, and slopes for years (1996 ve r sus 1997 ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Author(s): Everson, I. and A.W. Murray
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Natural mortality of grey rockcod (Notothenia squamifrons) in various areas of the Indian sector of the Southern Ocean
the first years of exploitation (Le. 1978 to 1979 for the Ob and Lena Banks and 1969 to 1972 ... on the Ob and Lena Banks these were 6.6 and 6.2 years respectively, while for the Kerguelen Islands area ... the value was 8.6 years. The calculated values of M were found to be the lowest among specimens ... to be 5.9, 5.2 and 7.6 years. The value for M in the Kerguelen Islands area is comparable to, although ... were 0.38, 0.36 and 0.33 for the above areas respectively. These values are comparable with those ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 141–146 : Author(s): Zaitsev, A.K.
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Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
in these regions, the total catch of macrourids may amount to between 10 and 25 tonnes each year (CCAMLR, 2000 ... . (1983) suggested that C. gunnari otoliths from seal faeces lost 10–20% of their length during ... relationships in bigeye grenadier, Subarea 48.3 nototheniids had lost 15–25%. There is currently little ... : Macrouridae) from the upper and middle slope of the northwest- ern Mediterranean. Deep-Sea Res., I, 42 ... less accurate estimates of fish length. Seasonal variations in fish mass with reproductive condition ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Author(s): Morley, S. and M. Belchier
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Geographical differences in the condition, reproductive development, sex ratio and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Subarea 88.1)
seasonally on Antarctic toothfish (Dissostichus mawsoni) from mid-December to early April during the 2000/01 ... (Dissostichus mawsoni) from mid-December to early April during the 2000/01 to 2004/05 fishing seasons on board ... toothfish (Dissostichus mawsoni) from mid-December to early April during the 2000/01 to 2004/05 fishing ... been restricted to the period between mid-December to early April. This was done to pro- vide ... value for all years occurring at about 141 cm TL for males and 152 cm TL for females. Average ... during that season. Fishing in the extreme south of the Ross Sea is possible early in the sea- son ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 27–45 : Author(s): Fenaughty, J.M
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Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic
r i e I s l and (Lloris a n d Rucabado, 1991). Even though Yukhov (1972), based o n data from the analysis of sperm ... and cephalopods (Tarverdiyeva, 1972; Lloris and Rucabado, 1991; McKenna, 1991), while postlarvae and juveniles ... matured at lengths of 64 to 94 cm TL (7 to 11 years old) and females matured at lengths of 85 to 115 cm ... TL (9 to 12 years old). This means that the size range we observed on the Argentinian continental ... continental shelf/slope between 46°-55°S and 60°-64°W, and around South Georgia between 53°-55°30' and 3 ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Author(s): García de la Rosa, S.B., F. Sánchez and D. Figueroa
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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
. These biomass and abundance plots should be regarded as relative population dis- tribution plots because ... to the north, with smaller fish dis- tributed on the shelf, larger fish on the slope and spawning fish ... -on rules and highly variable access to open areas due to sea-ice extent. Hence, in some years the fishing ... (median of about 20 km after a year at liberty, see Parker et al., 2013), suggests that the assumption ... dynamics of spatial heterogeneity of the population along with age structure, movement and reproductive ... were consistent with the results of tagging studies and fits to the other observations (age ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Author(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker
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Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach
established. Data from the CCAMLR Convention Area suggest that M. hyadesi may live for two years, but this may ... that M. hyadesi may live for two years, but this may vary. In common with other ommastrephids, the species ... mature in samples taken later in the year; ranging from stage I1 (Lipinski, 1979) at the APFZ ... later. The implication of the above is that M. hyadesi has a two-year life cycle. However, Arkhipkin ... Convention Area suggest that M. hyadesi may live for two years, but this may vary. In coinmon with other ... n v g e ~ z t i n u s in the southwest Atlantic have diminished and world demand for ommastrephid squid has increased in recent years ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Author(s): Rodhouse, P.G
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Preliminary report on biological observations and exploratory fishing data collected in the South Georgia area during the 1985/86 cruise of MT Carina
28 November 1985 to 19 January 1986 and covered the north-eastern part of the shelf. Permission ... comparable with those obtained in previous years. The trawler entered 12 Nm zone for sampling purposes ... were collected for later ageing of fish. - 71 - Catch data and length composition of catches ... season, as in the previous year, the predominance of C. gunnari in catches was observed. * "decade ... mesh sizes (47 and 60 mm) were used with a bottom trawl of 32 m head rope. Catch data were collected in ... . Sampling tows, including some tows inside the 12 Nm zone, were made with 47 mm mesh size codends. Fifty six ... determinations. The total catch with 60 mm mesh size codends was 1305.4 tons with a mean CPUE of 1822 kg/hour. C ... of C. gunnari were found with modes of 18 and 28 cm. The length range of C. aceratus was 25–72 cm. P ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Author(s): Kreft, K. and J. Szynaka