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Commission pour la conservation de la faune et la flore marines de l'Antarctique

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  1. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

    Paper Title:  Bias in the estimation of krill yield from using a deterministic formulation of the ... median unexploited spawning biomass Abstract / Description:  Two Monte Carlo simulation models, the krill ... parameters and abundance of the stock being assessed. CCAMLR currently uses results from the krill yield ... model as a basis for setting catch limits in the krill fishery, while the GYM is used for assessing ... Monte Carlo: el modelo de rendimiento del kril y el modelo de rendimiento generalizado (GYM), que ... de 10s stocks bajo evaluacion. La CCRVMA utiliza 10s resultados del modelo de rendimiento del kril ... como base para fijar 10s limites de captura de la pesqueria de kril, mientras que el modelo GYM se usa ... pesquerias de kril. Los criterios de decision se refieren a 10s efectos de un determinado rendimiento anual ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Auteur(s): Constable, A.J. and W.K. de la Mare

  2. Estimating optimal observer coverage in the Antarctic krill fishery

    Paper Title:  Estimating optimal observer coverage in the Antarctic krill fishery Abstract ... conventional krill trawl vessels fishing in South Georgia (CCAMLR Subarea 48.3) were analysed using variance ... estimate parameters of interest, in this case the mean (or median) krill length and the rate of larval fish ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... bordo de los barcos arrastreros que pescan kril con el método tradicional en Georgia del Sur (Subárea ... los parámetros de interés, en este caso, el promedio (o la mediana) de la talla de kril y la tasa de ... de muestreo de kril conseguida es equivalente al 18% del total de los lances por barco y por ... varianza entre los barcos y entre los lances. Para el promedio de la talla de kril y para la tasa de ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Auteur(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

  3. Quantifying movement behaviour of vessels in the Antarctic krill fishery

    Paper Title:  Quantifying movement behaviour of vessels in the Antarctic krill fishery Abstract ... / Description:  Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a ... basis for describing a generalised fishery model. Updates for some of the parameters for the krill ... проводить научные наблюдатели. Resumen Se caracterizó el comportamiento de la pesquería de kril en base a ... algunos de los parámetros del modelo de la pesquería de kril propuesto a fines de la década de los 80 ... kril durante el año, y que lo mejor sería que estos datos fuesen registrados por los observadores ... Quantifying movement behaviour of vessels in the antarctic krill fishery S. Kawaguchi and S.G. Candy ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Auteur(s): Kawaguchi, S. and S.G. Candy

  4. Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90

    Paper Title:  Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea ... statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... topographically-induced effects. Except in November 1989, temporally and spatially sustained fishable krill ... over oceanic areas, and targeted krill aggregations found in the major current flowing towards the ... las estadisticas de pesca de cada lance efectuado por la flota de pesca de kril sovietica durante la ... . Durante noviembre la flota comercial faen6 en alta mar concentrandose en las agrupaciones de kril que se ... junto con-las c6ncentraciones de kril. Se registr6 un CPUE mixirno (3,8 toneladas/hora) en 10s inicios ... arrastre del kril, estimada segun el traslado de la zona de pesca, alcanzo 7,4 km/dia (8,7 cm/seg). Esto ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Auteur(s): Sushin, V.A

  5. Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory

    Paper Title:  Moulting interval and growth of juvenile Antarctic krill fed different ... Antarctic krill (Euphausia superba) were fed Phaenodactylum tricornutum, at concentrations ranging from 0.0 ... juvenile krill increased, up to a concentration of 1.0 mgC 1 –1. No further effect of food concentrations ... , 1.14mm. From these results, maximum daily growth rate (∆BL /IP) of juvenile krill was calculated to be ... OF JUVENILE ANTARCTIC KRILL FED DIFFERENT CONCENTRATIONS OF THE DIATOM PHAENODACTYLUM TRICORNUTUM IN ... THE LABORATORY T. Ikeda, P.G. Thomas (Australia) Abstract Juveni,le Antarctic krill (Euphausia ... period (IP) decreased, but an increment of body length per moult (6BL) of juvenile krill increased, up ... , maximum daily growth rate (6BL/IP) of juvenile krill was calculated to be 0.047 mm day-l, which is too ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Auteur(s): Ikeda, T. and P.G. Thomas

  6. Some comments on the procedure for testing estimators of krill abundance which utilise survey data

    Paper Title:  Some comments on the procedure for testing estimators of krill abundance which ... utilise survey data Abstract / Description:  Since krill distributional data do show evidence of spatial ... computer generation of krill distribution patterns, which are compatible with existing information on the ... distributions from surveys. ‘Two-level’ models of krill distribution are considered. These achieve overall ... WG-KRILL-91/21 SOME COMMENTS ON THE PROCEDURE FOR ... TESTING ESTIMATORS OF KRILL ABUNDANCE WHICH UTILISE SURVEY DATA D.S. Butterworth*, D.L. Borchers* and ... D.G.M. Miller** * ** Abstract Since krill distributional data do show evidence of spatial ... computer generation of krill distribution patterns, which are compatible with existing information on the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Auteur(s): Butterworth, D.S., D.L. Borchers and D.G.M. Miller

  7. Status of the krill stock around Elephant Island in 1991/92 and 1992/93

    Paper Title:  Status of the krill stock around Elephant Island in 1991/92 and 1992/93 Abstract ... / Description:  Krill stock composition and distribution patterns in the vicinity of Elephant Island during the ... . The general distribution of krill length and maturity classes conformed to previous descriptions and ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... . Resumen Se presenta y compara la cornposicion del stock de kril y sus patrones de distribucion ... madurez del kril se ajusta a las descripciones anteriores y parece ser un aspecto recurrente y previsible ... de 10s stocks de kril en la region de la peninsula Antartica. Las distribuciones de frecuencia de ... . La abundacia, composicion de 10s estados de madurez y actividad reproductora del kril en general ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Auteur(s): Loeb, V. and V. Siegel

  8. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

    Paper Title:  Midwater trawl catchability in relation to krill and possible ways of assessing ... methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... and netting and also the probability that krill will come into contact with various parts of the net ... midwater trawls in the krill fishery indicates that the potential exists for this efficiency to be ... WG-KRILL-90/22 MIDWATER TRAWL CATCHABILITY IN RELATION ... TO KRILL AND POSSIBLE WAYS OF ASSESSING GROSS CATCH Yu.V. Zimarev*, S.M. Kasatkina* and Yu.P ... developed for and applied to determining the rate of krill filtration through the trawl rope and netting ... and also the probability that krill will come into contact with various parts of the net as it passes ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Auteur(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

  9. Sources of variance in studies of krill population genetics

    Paper Title:  Sources of variance in studies of krill population genetics Abstract / Description ... :  There has been a long-term interest in the population genetics of Antarctic krill species because of ... resurgence of interest in identifying distinct stocks of swarming krill species has been driven by the ... taken within one region. This has important implications for the design of future studies of krill ... poblaciones de las especies de kril antártico está despertando interés, debido a su importancia tanto para la ... la identifi cación de los distintos stocks de especies de kril agrupados en concentraciones. Los ... diseño de las futuras investigaciones de la genética de las poblaciones de kril, que debe tener en ... entre las regiones. Por lo tanto, la diferenciación genética entre los stocks de kril de distintas ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Auteur(s): Jarman, S.N. and S. Nicol

  10. A simple approach for calculating the potential yield of krill from biomass survey results

    Paper Title:  A simple approach for calculating the potential yield of krill from biomass survey ... MB 0 for a krill fishery in which both the fishery and krill growth are seasonal. The criterion used ... for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... WG-KRILL-91/24 A SIMPLE APPROACH FOR CALCULATING THE ... POTENTIAL YIELD OF KRILL FROM BIOMASS SURVEY RESULTS D.S. Butterworth* , A.B. Punt* and M. Basson ... fishery in which both the fishery and krill growth are seasonal. The criterion used for the calculations ... is that the probability that the krill spawning biomass drops below 20% of its median pre ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Auteur(s): Butterworth, D.S., A.E. Punt and M. Basson

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