Résultats de la recherche
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Conservation Measure Conservation Measure 41-11 (2016)
°30'S 90°00'E 66°00'S 90°00'E 66°00'S 94°00'E 65°30'S 94°00'E 65°30'S 95°00'E 64°00'S 95°00'E 64 ... pendant un an et que les données résultant de ces activités seront examinées par le Comité scientifique ... SSRU B – 0 tonne SSRU C bloc de recherche 58.4.1_1 – 80 tonnes SSRU C bloc de recherche 58.4.1_2 ... de recherche 58.4.1_6 – 90 tonnes SSRU H – 0 tonne. Saison 4. Pour les besoins de la pêcherie exploratoire ... Limits on the exploratory fishery for Dissostichus mawsoni in Statistical Division 58.4.1 in the ...
Conservation Measure : 41-11 (2016)
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f-cc-vii-aE.pdf
... $A pour les pays exploitants. PREVISIONS BUDGFIZAIRES E%UR 1990 20. La plupart des dgpenses dans les previsions ... Bch6an+,, la description. des fofictions B reragplir pour le poste en question ainsi que lf6chelon ... est entre les limites de 00000 $US et 00000 $US net par an.) Les indemnitgs sont p e e s selon ... a pris note du fait que le tern du ~ecr6taire exgcutif titulaire expirera le 30 juin 1990. I1 a alors
application/pdf attached to:SCAF-88
Meeting Report : SCAF-88
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Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea
Paper Title: Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana ... , after which growth almost ceases (Francis and Ó Maolagáin, 2005). An alternative interpretation of age ... georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... been generated that suggest much slower growth, greater ages-at-maturity (about 20 years compared with ... underestimated Estimated age (years) 0 10 20 30 40 P el vi c le ng th (c m ) 0 20 40 60 80 100 ... an assessment of between-reader variability. The revised age and growth estimates for this species ... interpretation of age and growth for A. georgiana that is radically different from the published interpretation ... 20 30 40 P el vi c le ng th (c m ) 0 20 40 60 80 Reader 1 (N = 216) Reader 2 (N = 98 ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Auteur(s): Francis, M.P. and M.J. Gallagher
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.
obtained by integrating an ordinary differential equation (ODE) for within-year population dynamics. The ... process error in predicted catch-at-age numbers. Simulations assumed 1 000 releases per year over 12 years ... new mortality equation. Abstract / Description: An estimation strategy for natural mortality, M ... population. Estimation for the BODE model requires an extra component to the log-likelihood which defines the ... ) model) uses an ODE with constant within-year catch per unit time for each age class, and as a result ... of the population size for each age class and year of fishing. Allowing an adequate time for mixing ... time. The initial age structure at the first year of fishing and for subsequent years is obtained by ... obtained by integrating an ordinary differential equation (ODE) for within-year population dynamics. The ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
obtained using proportions-at-length and fishery- and year-specific age–length keys (ALKs) for years 1998 ... trawl ground at HIMI were used to estimate M. Catch and releases by age class for this fishery were ... in R, based on alternative ordinary differential equations (ODE) for within-year population dynamics ... directly from the estimates of population numbers-at-age. The properties of these two models for estimation ... age frequencies within each fishing year. For an M of 0.155, the expected number of recaptures fitted ... fishery- and year-specific age–length keys (ALKs) for years 1998 to 2008. A large proportion of the ... - tured fish assigned to age classes used for model- ling. The numbers of recaptures by year of release ... fish in the catch and ,iy aN the predicted number of fish in the population of age class a in year ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Auteur(s): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins
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Species identification and age estimation for the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
Paper Title: Species identification and age estimation for the ridge-scaled macrourid (Macrourus ... Zealand for subsequent confirmation of their identity by researchers from the National Institute of Water ... methodology has yet to be validated for this species. Von Bertalanffy growth parameters were calculated from ... exhibited a degree of sexual dimorphism. The age at which 50% of fish are sexually mature was estimated to ... 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 Age (years) To ta l l en gt h ... . holotrachys Species identifi cation and age estimation for M. whitsoni 44 Marriott et al. 0 10 20 30 ... % 80% 90% 100% 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 ... maturing. 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 12 13 14 15 16 17 18 19 20 21 22 23 24 25 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 37–51 : Auteur(s): Marriott, P., P.L. Horn and P. McMillan
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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
Paper Title: Estimation of effective sample size for catch-at-age and catch-at-length data using ... year is important for such assessments, and this issue is studied using simulation. Between-haul ... gave accurate estimators of an ESS that is appropriate for haul-level heterogeneity with increasing ... method. To account for process error in the calculation of the ESS, the lack of fit of the age-structured ... sampling of the population age structure. For each of the 20 years in a replicate, catch-at- age ... fishery and let the number of fish sampled from age class a for year y, aggre- gated across all hauls (j ... by proportions by age class or length bin to give numbers by class/bin and year, an offset of log ... centred year value obtained from the integer values of year, y, so that for a 20-year simulation period ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Auteur(s): Candy, S.G
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A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
Paper Title: A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age ... (IWLS), predicted substantially lower mean length-at-age for older ages compared to the VB curve fitted ... to give more realistic predictions of mean length-at-age for young fish. File: 03candy-etal.pdf ... -estimated parameters. A young-age adjustment (less than 5 years old) to the VB model is also given in order ... ed distribution with zero skew, and (ii) an exponential distribution for age- at-fi rst-capture that ... – 20 year range. This translated to larger predictions for the MLPLB-fi tted curve for ages below 5 ... mean length-at-age for ages above 15 years. When length bin relative sampling frequencies were also ... (2007): 43–66 43 A VON BERTALANFFY GROWTH MODEL FOR TOOTHFISH AT HEARD ISLAND FITTED TO LENGTH-AT-AGE ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Auteur(s): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
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REVISED AGE AND GROWTH ESTIMATES FOR ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
(Francis and Ó Maolagáin, 2005). We present an alternative interpretation of age and growth in A. georgiana ... . Francis (New Zealand) and M.J. Gallagher (Ireland) Title: REVISED AGE AND GROWTH ESTIMATES FOR ANTARCTIC ... that these skates initially grow very rapidly for about five years, after which growth almost ceases ... growth, greater ages at maturity (about 20 years compared with 6–11 years) and greater maximum ages (28 ...
Meeting Document : WG-FSA-08/21 : Auteur(s): M.P. Francis (New Zealand) and M.J. Gallagher (Ireland)
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Lead-radium dating provides a framework for coordinating age estimation of Patagonian toothfish (Dissostichus eleginoides) between fishing areas
. 3.3 years was observed across estimated ages younger than 20 years. For the CAF, ages were ... revealed minor biases between the radiometric age and interpretation of growth zone counting for regional ... Central Ageing Facility (CAF), using different age estimation techniques. For CQFE, under-ageing of ca ... estimates range from approximately 20 to more than 50 years. In this study, lead-radium dating provided ...
Meeting Document : WG-FSA-11/P01 : Auteur(s): A.H. Andrews, J.R. Ashford, C.M. Brooks, K. Krusic-Golub, G. Duhamel, M. Belchier, C.C. Lundstrom and G.M. Cailliet