Résultats de la recherche
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[node:field-journal-volume]:37-51
value was attributed to each age estimate, as follows: 1. certain count 2. uncertainty of ±1 year 3 ... of exploitation so far. Only fi sh with readability grades of 1–3 were used in the analysis of von ... otoliths with readability grades as follows: Readability 1 2 3 4 5 Number 7 62 144 71 16 The two readers ... otoliths appeared to produce acceptable results with ages being confi dently (±2 years) attributed by the ...
Science Journal Paper : 37–51
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Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives
minimum population level posited to ensure stable recruitment is equated with GNAI. (3) The effects of ... with the concepts (1), (2) and (3) above. A further factor to be taken into consideration in some ... being above the current level in year 20 (denoted PL,20> 0.95 in the table); (3) 50% confidence in ... Bertalanffy K = 0.12 year! Von Bertalanffy Woo = 2500 grams Age at first fishing = 5 years (knife-edge) Age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Auteur(s): de la Mare, W.K. and A. Constable
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Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)
the other years (by transformed otolith length gave predicted fish some 4 cm at c. 60 cm) with ... length. log,,-transformed data from all years with no restriction on range. The equation for all years ... all years with no restriction on range. The equation is: loglOWf = -0.0177 + 4.57 log10 L, (SEs ... of food webs generally begins with a simple descriptive picture of major interactions. Extending ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Auteur(s): Everson, I., B. Bendall and A. Murray
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Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990
/86 year classes. The first small peak corresponds with the strong 1988 year class. File: 17 ... 9+ were present in catches. Two peaks in size composition correspond with fish of the 1987 and 1985 ... size composition correspond with fish of the 1987 and 1985/86 year classes. The first small peak ... corresponds with the strong 1988 year class. Re.sume En janvier/fevrier 1990, la Grande-Bretagne et ... , and 31-33 cm with the maximum being in the second size group (Hill Cove) while in February they were ... 16-18,24-26 and 30-34 cm with the maximums being in the second and third size groups (Akademik ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Auteur(s): Kochkin, P.N.
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Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas
average, with the past observations. The simulations may prove useful in comparing observed performance of ... year with no fishing on it. C. gunnari and N. gibberifrons around South Georgia Island were also ... of 2 in about five years; however, the recovery is only 1.7 times the initial size with F = 0.76 ... about 4 times the initial yield at the end of the 20-year simulation, doubling in four years for both ... size of the annually recruiting year class. Past data indicate that for some years the other stocks ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Auteur(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel
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Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption
Trematomus eulepidotus- planktivorous species with euphausiids, mainly Euphausia superba, being the staple ... forms of polychaetes, with Euphausia superba also comprising a considerable portion of its diet; (iii ... (Grawford, McLeave as cited in Targett, 1981; Montgomery et al., 1989). In accordance with equation (3) the ... species with euphausiids, mainly Euphausia superba, being the staple food; (ii) Trematomus centronotus ... - a benthophage feeding mainly on amphipods, mobile and sedentary forms of polychaetes, with ... - planktophagic species with euphausiids, mainly Euphausia superba, being the staple food. T. eulepidotus also ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Auteur(s): Pakhomov, Y.A. and V.B. Tseitlin
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Optimization of survey sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins
. Restrictions have been fixed in accordance with the recommendations of the fourth meeting of WG-CEMP: minimum ... in accordance with the recommendations of the fourth meeting of WG-CEMP: minimum interannual ... of Ad6lie penguins from Bahfa Esperanza was made using a nested ANOV A design with data grouped by ... cost associated with each determination of the annual mean results from the sum of costs at the ... : where CD is the cost associated with each sampling day; not related to the number of penguins sampled ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 551–559 : Auteur(s): Marschoff, E. and B. Gonzalez
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Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region
. whitsoni caught with depth. Catches of females of both species exceeded that of males (especially for M ... species are euryphagous predators and scavengers, with evidence of piscivory and both benthic and pelagic ... analysis, trophic level was estimated at 4.4–4.5 (M. caml) and 4.1–4.3 (M. whitsoni), consistent with one ... of 1 were assigned as immature; fish with gonad stage 3–5 were taken as sexually mature, and fish ... only 26% of M. whitsoni had stage 3 gonads. For M. caml, the proportions of fish caught with various ... (CCAMLR Subareas 88.1 and 88.2) began in 1997 and is managed by CCAMLR with a spe- cific requirement to ... , Family Macrouridae) are the main by-catch in the toothfish fishery in the Ross Sea region, with a catch ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Auteur(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown
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Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics
, was recognised in 2010 with the identification of a new species, M. caml. Grenadier are the main by ... and morphology with somatic growth and age in young-of-the-year bluefin tuna. J. Fish Biol., 68 (6 ... outside of the otolith each year (Figure 5). While M. whitsoni approaches full size at about 17 years ... , Micromesistius australis. Lat. Am. J. Aquat. Res., 41 (3): 479–489. Lorance, P., P.A. Large, O.A. Bergstad and ... Year Census of Antarctic Marine Life (IPY- CAML) voyage in 2008 led to the identification of a new ...
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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Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January-February 1987*
to have been about 40% overall increase in the chinstrap population in the last 20-30 years, about ... -30 years, about three-fourths of the difference between our counts and previous ones is due to more ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 449-451 : Auteur(s): Shuford, W.D. and L.B. Spear