Search results
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Estimating krill recruitment and its variability
rate for 1+ krill (the ratio of the number of krill aged one year to the number of krill aged one year ... for 2+ krill (the ratio of the number of two-year-old krill to the number aged two and above) from nine surveys ... a mean recruitment rate for 1+ krill (the ratio of the number of krill aged one year to the number ... of krill aged one year and above) of 0.339 with a standard deviation (SD) of 0.100. The corresponding ... of krill aged one year to the number of krill aged one year and above) of 0.339 with a standard deviation ... -year-old krill to the number aged two and above) from nine surveys is 0.552 with a standard deviation ... of animals in age class i, and n is the age of the oldest animals in the population present in non-eligible ... interval, D, is the total density of animals aged i in the population, (D(.) denotes the cumulative ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Author(s): de la Mare, W.K
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
at aspects of Antarctic toothfish (Dissostichus mawsoni) biology, including stock structure, age and growth ... 8). There were modes at 80 cm and 100–115 cm in each of the three years. For com- parison, the size distribution ... longline survey to monitor this part of the population. Résumé Cet article résume les connaissances sur ... , reproduction, diet, movement and trophic status, much of which was reviewed and summarised by Hanchet et al ... , with some evidence for an ontogenetic migration from east to west as they grow. From the fisheries data ... available, there is no evidence for a northward contraction in the range of D. mawsoni over the course of ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Author(s): Hanchet, S.M., S. Mormede and A. Dunn
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Trawl bag selectivity in the Champsocephalus gunnari fishery
and the selectivity factor was 3.10 for a mesh size of 80 mm. Comparison of these results with results from previous ... years demonstrates close similarity. A significant increase in modal length (up to 34-35 cm) as well ... % was 24.8 cm and the selectivity factor was 3.10 for a mesh size of 80 mm. Comparison of these results ... with results from previous years demonstrates close similarity. A significant increase in modal length (up ... was 3.10 for a mesh size of 80 mm. Comparison of these results with results from previous years ... 80 cm. Comparison of these results with those from previous years shows close similarity ... 5 316 11 20.41 23 1000 48 6 317 " 22.26 52 1500 30 7 319 18.06 06.35 40 000 32 8 320 " 08.25 52 1900 ... Number of Fish Caught of Fish In Codend In Cover A B C 17 - 1 18 - 7 19 - 16 20 30 38 21 - 20 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 295–312 : Author(s): Bidenko, V.G. and I.G. Istomin
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
years, seasons and nations Abstract / Description: Patterns of fishing ground selection were ... remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons ... (March–May) and 48.3 (June–August). In 25 years of krill operations in Area 48, patterns ... increased from an aver- age of 2.2 tonnes/h (until 1990/91) to 3.7 tonnes/h (from 1991/92 onwards). KOR did ... 4 8. 1 P el ag ic a re a (A P PA ) D ra ke P as sa ge e as t ( A P D P E ) D ra ke ... 4 8. 2 P el ag ic a re a (S O PA ) W es t ( S O W ) N or th ea st (S O N E ) S ou th ea st ... (S O S E ) S ub ar ea 4 8. 3 P el ag ic a re a (S G PA ) E as t ( S G E ) W es ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Author(s): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years, subareas ... and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal variability ... units (i.e. year, subarea, vessel, cruise and haul) based on a state–space model, separating ... ), krill populations consist of multiple cohorts, but it is difficult to estimate age structure by using ... by fishing vessels. For by-catch fish, although the vessel cover- age contributes to improve statistical ... , D., G. Watters and C. Reiss. 2011. Model- ling Antarctic krill: scale, movement and age- structure.Document WG ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota
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Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
length-at-maturity (38.8 and 46.4 cm) and mean age-at-maturity (10.6 and 13.6 years) are presented ... (38.8 and 46.4 cm) and mean age-at-maturity (10.6 and 13.6 years) are presented for males and females ... Paper Title: Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from ... -sex were fitted separately to a revised length-at-age dataset and compared using the likelihood-ratio ... 0 10 20 30 40 50 60 Age (years) 100 80 60 40 20 0 100 ... 4) suggests that the reader generally assigned higher ages to fish that were between 10 and 30 years old ... 80 60 40 20 0 To ta l l en gt h (c m ) Figure 3: Length-at-age for all Macrourus whitsoni ... 0 10 20 30 40 50 60 First age Figure 4: Bias plots of within- and between ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 291–303 : Author(s): Marriott, P.M., M.J. Manning and P.L. Horn
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
stock. High biomass density appeared with 2-4 year intervals after recruiting an abundant year-class ... . High biomass density appeared with 2-4 year intervals after recruiting an abundant year-class ... 2-4 ans apres le recrutement d'une abondante classe d'age dans le stock exploite. La - 186 ... with lengths of 42-65 cm, mostly from age-groups V and VI (year classes of 1977 and 1978). Higher biomass ... . In a period of predominance of age-group II fish in the catches, they appeared with 2-4 year intervals ... /83 and 1983/84 (Anon. 1986). The abundant year class of 1984, observed in great numbers as age-group ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Author(s): Mucha, M. and W. Ślósarczyk
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Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987
of standard length/total length b) determination of weight c) collection of otoliths and scales for, age ... prevailed (females 80%, males 90%). GSI females = 0.3-1.0 %, 0.5 (GSI = Gonadosomatic Index) GSI ... -aBCTpaJIJ.lHCKOH 3KCneAJ.lllJ.lJ.l B Pbl60JIOBHYIO 30HY ABCTpaJIJ.IJ.I BOKPyr OCTPOBOB XePA J.I MaKAOHaJIbA ... . YCJIOBJ.lH cpeAbl Ha lIIeJIbq,e OCTpOBa XePA 6blJIJ.I 6JIarOnpJ.lHTHbl AJIH 06pa30BaHJ.lH npOMblCJIOBblX ... Heard were favourable for the formation of commercial aggregations of Champsocephalus gunnari during the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Author(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba
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Results of fish larvae sampling by means of fine-meshed samplers attached to a bottom trawl
Nototheniidae, and among them Nototheniops larseni (9.3-20.5 mm). The abundance of postlarval fish was highest ... (9.3-20.5 mm). The abundance of postlarval fish was highest in the shallow (108-166 m), nearshore ... with potassium hydroxide (for subsequent ageing of larvae). Unfortunately the buffer caused fading of pigment ... wlokach. Studia i Materialy Morsk Inst Ryp Gdynia C 30: 134 p. 73 Table 1: Station 19 20 22 ... 1200 37 420 na 170 500 38 100 330 1 0 140 45 20 70 420 300 46 300 660 1000 420 67 80 220 460 320 ... 250 123 190 * 220 70 124 50 * 320 320 127 50 * 680 80 130 20 * 60 * * damaged sampler 77 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 69-86 : Author(s): Ślósarczyk, W. and I. Wójcik
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A rationale for conservation areas within Antarctic waters
: The application of potential conservation measures listed in Article IX 2 of the Convention requires ... resources’ (Article IX 2 (b)). In order to select meaningful boundaries for such areas, first priority has ... potential conservation areas are proposed: 70°W- 15°W 15°W- 40°E 40°E- 90°E 90°E- 150°E 150°E- 160°W 160 ... The application of potential conservation measures listed in Article IX 2 of the Convention ... consistently different proportions of body pigment patterns and differing age/size composition as a result ... ~ 5 : I I I I I I - 528 - DEGREES EAST DEGREES WEST I 20 40 60 eo 100 120 140 160 180 160 140 120 100 80 60 11 ... and Erickson, 1977) . 100· 120· - 530 - 60· 80· 100· 120· 140· 160· - 20,000 BREEDING PAIRS ... . nepepa60TKa KI1rOM (1986 r.) AaHHblx .n:pro~pa (1983 r.). B03MO~Hhle paiOHhl ynpaBneHI1H B 30He AeicTBI1H ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Author(s): Chittleborough, R.G.