Resultados de la búsqueda
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Krill population biology during the 1991 Chilean Antarctic krill fishery
419 hauls. In Area A, a unimodal size frequency distribution was found; the size range was between 30 ... juvenile specimens between 20 and 39 mm TL. Females comprised 47.1%, males 40% and juveniles 12.9%. Of the ... ' 59°55,3' 2.60 58 14 21:30 21.02.91 62°08,1' 59°51,5' 2.40 50 20 09:30 22.02.91 62°08,9' 59°56,4 ... °17,6' 2.70 50 30 18:20 03.03.91 62°26,0' 61 °17,8' 2.80 40 39 08:30 04.03.91 62°33,5' 61 °22,7' 2.90 ... : Total catch (tonne/mile) in both areas during the three time periods. 50 % 60 40 30 20 10 ... between 30 and 55 mm TL, with a mean TL of 45 mm for females and 48 mm for males. A very weak mode for ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 223–235 : Autor(es): Mujica R., A., E. Acuña S. and A. Rivera O.
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
for all years up to, and includ- ing, the 2007/08 fishing year. The observer data used in this report ... 88.2 for all years up to, and including, the 2007/08 fishing year. Data error checking and grooming ... caught in each of the three grounds, for years where more than 10 sets were completed, is shown by year ... between years on catch per 24-hour set, so the use of a single year to illustrate trends is of limited ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Autor(es): Hanchet, S.M., S. Mormede and A. Dunn
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
in relation to environmental conditions. Together with biomass assessments this has paved the way ... create a foundation for identifying the type of change taking place. During the above years the low ... changes into the above procedure of estimation. In recent years the Isaacs-Kidd trawl has been used in ... and east of the island. The survey itself together with additional searching operations made it ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Autor(es): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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Exploratory fishing for Dissostichus spp. in the Antarctic region (Subareas 48.1, 48.2 and 88.3)
. Male 1 60 17 Female W 50 m - E 40 2 30 20 10 0 0 1 2 3 4 Repletion index Figure 6 ... South Shetland Islands zone. In recent years, the Patagonian toothfish (Dissostichus eleginoides ... ). Over the last few years, interest in this resource has increased, resulting in increased ... Kirby hooks (61 X 30 X 27 mm), unbalanced type, spaced at 1.8 m intervals. To help sink the fishing ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 1–17 : Autor(es): Arana, P.M. and R. Vega
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Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic
continental shelf/slope between 46°-55°S and 60°-64°W, and around South Georgia between 53°-55°30' and 3 ... Argentinian continental shelf/slope, the length of D. eleginoides ranged from 30 to 95 cm total length (TL ... main line of 20 000 m, with branch lines each with 90 hooks (model 'Ancora', 30 mm gap) spaced at 1 m ... continental shelf/slope, the length of D. cleiyiizoides ranged from 30 to 95 cm total length (TL) which ... variait de 30 5 95 cm, ce qui correspond au stade juv6nile. Autour de la GPorgie du Sud, la distribution ... ~ax AJIclHa (TL) KJIbIKaYa ~one6anacb B jJllana3OHe 30-95 CM, YTO COOTBeTCTBYeT CTanHH MOJ'IOAH. B o ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Autor(es): García de la Rosa, S.B., F. Sánchez and D. Figueroa
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
-----------~------------+_-------- 15 20 25' 30 45 50 55 fish length (TL,cm) Figure 7 Double-layer codend (mesh 120 mm) selectivity ... 20 25 30 35 40 45 0 j:;"sh Length ITL, qm/ Figure 8 Double-layer codend (mesh 120 mm) selectivity ... ---~~--~------~~~~~~--------~_+--------------r grounds ~+----~~------~----------j-------+ (5 20 25 30 35 40 Its 'So .F;'sh Length (rL, ern ... a thickness of 2 mm and having a mesh size of 20 mm. A schematic drawing of a 4-wall codend with ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Autor(es): Zaucha, J.
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
the value of 0.35 used by the Working Group on Fish Stock Assessment (WG-FSA) in previous years. In ... Frolkina and Dorovskikh, 1990). Age composition of the catches, Ca.)!, for a series of years and ... - number of age groups; Yk - number of fishing years; M - natural mortality rate; Wa,y or Wa - mean ... ; Cy - total catch by weight by fishing years; q - catchability factor; Sa - age selectivity factor ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Autor(es): Gasyukov, P.S. and R.S. Dorovskikh
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Growth and age/length structure of populations of Notothenia (Lepidonotothen) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean
paper. It was found that during the first years of life the linear growth rate is 3 to 5 cm per year. It ... decreases by a maximum of 1 cm during the last years of life. Maximum annual weight increments of 100 to 120 ... 20 to 36 cm in length, aged 4 to 12 (T =8 years) and on the Lena Bank - 22 to 32 cm in length, aged ... 'I 'I 'I 1000 500 fO 20 30 Y Y 'I 40 2/ / / / / / / / , ,1 I I ... 1972; 2=1980 to 1986. 133 30 20 f978 n=770 t=7,5 fa 20 (979 n=2327 fa 20 1980 (1;5426 ... 10 '-ID 1986 n=68S9 t=8,O 3D 20 to ItO 30 1987 rt=6223 t=7,8 20 fO 8 12 f6 20 24 28 32 36 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 123–139 : Autor(es): Zaitsev, A.K.
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
single year. Then, for the following two years, that subarea would be closed to fishing. For example, if ... ., penguins and seals); this is mandated by Article II of the CCAMLR Convention. The probability of adverse ... adverse impacts on the fishery (e.g., shorter fishing seasons during years with increased ice cover). The ... fishing during the two following years while Subareas 48.2 and 48.3 were subsequently opened and closed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Autor(es): Watters, G. and R.P. Hewitt
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Cephalopod research in the Antarctic
collection, together with Antarctic collections from the 'Discovery' expeditions and from the 'Walther ... successfully raised in rabbits and testing is being carried out for cross reactions with other pelagic ... Scotia Sea. The estimates, 34.2 million tonnes and 3.7 million tonnes per year respectively ... data in turn may be useful, in the future, for predicting year class strength of exploited species ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 323-334 : Autor(es): Rodhouse, P.G.