Resultados de la búsqueda

1. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   eleginoides) are illustrated. While length-frequency data can be useful in assessments when integrated with ... migration. It represented age classes from 0 to 50 years, with the last age class being a ‘plus class’ in ... , and embedded into the existing CCAMLR man- agement framework with reference points and de- cision ... different years during the projections for immature selectivity and (a) constant recruitment with catches ... Reference year 2000 First year of projection 2001 Years to project stock in simulation 60 y Reference ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Autor(es): Ziegler, P.E., D.C. Welsford and A.J. Constable

2. Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys

   1996 and 1997 (in line with years of high krill abundance). This information is well in accord with ... and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as ... of the main prey items in the diet of C. gunnari, as well as of the proportions of stomachs with ... years of krill scarcity), intermediate in 1995 (below years of historically high abundance), and high in ... elaborated with material from the 1994 and 1995 surveys, correspond to age groups 1 to 3 years (Barrera-Oro ... four years, while krill biomass densities were comparable with those in the previous year and were ... (below years of historically high abundance), and high in 1996 and 1997 (in line with years of high ... 75% at SR respectively); this is in line with the years of high krill abundance 1975 to 1977, 1985 ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Autor(es): Barrera-Oro, E., R. Casaux and E. Marschoff

3. New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands

   the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... outer shelf. The three-year cycle observed previously seems to be related to the maturation stage of ... considerably between years: later. Period No. of Larvae/ l 000 m3 Maturity Stages of Fish Fish from the ... for successive cohorts (Table 3). Daily growth increments are available for the first two years of ... grow more than 10 cm a year during the two first years, after which minimum values are observed ... cohort: l-year-old immature fish (2.9% of the sample) winter 1991 /92 1988 cohort: first spawning, 3 ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Autor(es): Duhamel, G

4. International CCAMLR applied research and monitoring program, Prydz Bay priority area

   Australia towards the first five years of an International CCAMLR Applied Research and Monitoring Program in ... a proposed scientific research contribution by Australia towards the first five years of an ... or parameters may have to be discarded during this developmental phase. 3. SELECTED PREY SPECIES ... phase of technical development, some joint work conducted simultaneously with research vessels of ... vessels used by Australia in the future, and other nations. Early life stages of fish are collected as ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 283-295 : Autor(es): Australia

5. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... and the proportion of fi sh with maturity stages 2–5 and 3–5 in each length bin calculated. A ... at least 3 hours. Prepared otoliths were viewed with a dissecting microscope under transmitted ... (Figure 7), corresponding to between 2 and 3 years of age. The largest specimen of M. carinatus caught ... 1992 and 1993. The range of estimated ages was 4 to 25 years. There were no signifi cant differences ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Autor(es): van Wijk, E.M., R. Williams and A.J. Constable

6. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

   develop a comprehensive sampling design which will provide data in line with assessment procedures that ... Dissostichus eleginoides off the south of Chile which is being conducted in accordance with CCAMLR regulations ... which will provide data in line with assessment procedures that are quite similar to those commonly ... south of Chile which is being conducted in accordance with CCAMLR regulations. Resume L'approche de ... , Casilla 8-V, Valparafso, Chile 2 Universidad Austral de Chile, Casilla 567, Valdivia, Chile 3 paC1 ... , managed so as to collect series of data which can be analysed in conjunction with stock dynamics models ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Autor(es): Zuleta, A.V. and C.A. Moreno

7. Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia

   both up and down slope at particular times of year. Months with a high mean length at depth are May and ... with an approximately linear relationship existing between depth and fish length. A statistically ... significant pattern of changing mean length at depth with month was detected, suggesting movement of animals ... August, and with a low mean length at depth- April and July. Examination of maturity data suggests that ... , suggesting movement of animals both up and down slope at particular times of year. Months with a high mean ... distributed down the shelf slope with an approximately linear relationship existing between depth and fish ... length. A statistically significant pattern of changing mean length at depth with month was detected ... length at depth are May and August, and with a low mean length at depth - April and July. Examination of ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Autor(es): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce

8. Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia

   for toothfish (Dissostichus spp.). Three regimes were examined, with weights of 4.25, 8.5 and 12.75 kg ... interact with the vessel during setting operations. From early sets it was found that the high number ... weight per 40 m (Table 3). Giant petrels appeared to be at very low risk when lines were set with ... longlines fishing for toothfish (Dissostichus spp.). Three regimes were examined, with weights of 4.25,8.5 ... XPYCbI IIpM IIpOMbICJIe KnbIKava (BMAOB Dissostichus). 6b1nki H3yYeHbI 3 peKHMa, I I p H KOTOPbIX Ha ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Autor(es): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes

9. On the power to detect changes using the standard methods for monitoring parameters of predatory species

   trip duration (C2.0). The other Standard Methods are not evaluated because the power analysis in the ... parameter to determine how small a change (8) could be detected between or among years with a given sample ... a one-way analysis of variance with years representing treatments. The square root of the MSE term ... by an inverse relationship between trip duration and number of trips. That is, if a bird with a ... estimates of the variance of trip duration for an individual bird, the covariance of trip duration with ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Autor(es): Boveng, P. and J.L. Bengtson

10. Some thoughts on precautionary measures for the krill fishery

    /81 season, over a decade ago, which means that with a lifespan of five to seven years, at least two ... CCAMLR Science, Vol. 3 (1996): 1-11 SOME THOUGHTS ON ... , ocHosaHHoe Ha p a 3 p a 6 0 ~ a ~ ~ 0 8 Pa6oseii rpynnoii H a y s ~ o r o KoMmeTa AHTKOMa no Kpmm (WG ... nnz o 6 e c n e ~ e ~ w ~ 6 n a r o n o n y ~ ~ o r o BbllKLIBaHHX 6 a 3 u p y m w ~ x c ~ Ha CyUe ...

    Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Autor(es): Everson, I. and W.K. de la Mare

Páginas