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1. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   340–360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at about 370–400 mm ... TL and 6–8 years of age. Counts of growth zones in sectioned otoliths were used to determine ages ... a significantly larger mean asymptotic maximum size than males. Maximum ages of 8 and 11 years were obtained ... ;360 mm total length (TL) and about 3–4 years of age, and that 95% were mature at about 370&ndash ... ) and about 3–4 years of age, and that 95% were mature at about 370–400 mm TL and 6–8 years of age. Counts ... maximum size than males. Maximum ages of 8 and 11 years were obtained for male and female fish ... j j t L L L L (5) where L1 and L2 = mean lengths at two reference ages τ1 and τ2 = reference ages κ = rate parameter ... and 3–4 years of age, while 95% are mature at 370–400 mm TL and 6–8 years of age. Females appear to mature ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 139–165 : Author(s): Sutton, C.P., M.J. Manning, D.W. Stevens and P.M. Marriott

2. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL

   data. A key uncertainty is the number of ages fully selected by the main survey series. With all ... the data included in the model, age-4 and 5 fish are fully selected, whereas when the survey data have ... greater influence and without the tag data, the selectivity of these ages was reduced. The method ... exclusion of the tag data. A key uncertainty is the number of ages fully selected by the main survey series ... of the coefficient of variation (CV) for length given age, (ii) use of non-informative pri- ors for year-class ... that the CV in year-class strength (YCS – number of annual age-1 recruits relative to the median pre- fishery ... ). The maximum age was set to 35 years since the model of Candy et al. (2007) gives unrealistically high ... average length-at-age as age is increased much past 35 years because of the lack of available data ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Author(s): Candy, S.G and A.J. Constable

3. An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba

   in the precision of prediction. Surprisingly, the stage of the moult cycle of the animal has little effect upon ... . Surprisingly, the stage of the moult cycle of the animal has little effect upon length-weight relationships ... a une precision de prediction bien superieure. Contrairement a ce qu'on pourrait attendre, le stade du ... precision de toute prediction portant sur la masse. Cependant, si l'on separe les femelles gravides, soit ... of prediction. Surprisingly, the stage of the moult cycle of the animal has little effect upon length-weight ... Universitat Kiel, Dusternbrooker Weg 20, 2300 Kiel, Federal Republic of Germany. Les relations publiees des ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Author(s): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle

4. Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias

   of growth can be remediated by estimating size- or age-based estimates of LPE parameters. Slowing ... the movement of toothfish and the spatial distribution of size and age classes (e.g. Dunn and Rassmussen ... of size- and age-based models for areas without assessments, such as the exploratory toothfish fisheries ... , Hobart, Australia: 17 pp. Candy, S.G. 2011b. Estimation of natural mortal- ity using catch-at-age ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Author(s): Welsford, D.C. and P.E. Ziegler

5. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   M O X e T 6 b 1 ~ b I lOne7HbIM np13 m H T e p n p e T a u r t r 1 p e ' 3 y n b T a T O B llpOB0nl.lMblX ... indices o f mackerel icefish at South Georgia One using gutted mass is likely to respond with a slight ... time delay and have a lower variance with respect to one using total mass. In this study we have ... status in a similar manner to one using gutted mass and from it determine when good and poor feeding ... 1997 Abstract / Description:  Mackerel icefish (Champsocephalus gunnari) are widespread on the South ... predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Author(s): Everson, I. and K.-H. Kock

6. A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3

   /2000 and 2000/01. Each year fully covered the period 1 October to 30 September, thus including one ... /2000 and 2000/01. Each year fully covered the period 1 October to 30 September, thus including one ... have been at least one encounter with an FPV in a year; no encounters in a year are interpreted as zero ... at least one encounter with an FPV in a year; no encounters in a year are interpreted as zero IUU fishing ... . Each year fully covered the period 1 October to 30 September, thus including one summer and one winter ... year was defi ned as extending from October of one year to September of the next. This is more ... with the next two FPV cruises. It is missed by the fi rst one (modelled using the encounter prob- ability ... – there would be as much chance of detection if the two cruises overlapped by one day as by eight days ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Author(s): Agnew, D.J. and G.P. Kirkwood

7. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

   % of the krill were dam- aged and losses of the raw krill material could be 20% or more (Anon., 2001). Another ... 14 16 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Catch per vessel-days fished (tonnes ... in the Soviet krill fi shery from 1986 to 1991 (RIF statistics). 0 5 10 15 20 25 30 35 ... 87 27 0. 39 55 23 1 10 3 0. 90 15 93 0. 46 76 21 24 2 0. 94 20 38 0. 59 ... calculated for specific strategies were well correlated. Depending on the fishing strategy used, the number ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Author(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

8. Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)

   for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption was estimated ... was calculated for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption ... consumed is between 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million tonnes ... in the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from trawl ... one to three days and, as a rule, where krill swarms were of a high density. Therefore the biomass ... to assess fish diet, stations lasting from one to several days were carried out in the Kosmonavtov Sea ... -February, fish consumed in one day up to 68% of daily krill production in this localised area. The index ... 26 to 128 x 103 tonnes and it is able to consume from one to 13% of yearly krill production. Data ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Author(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk

9. Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).

   Paper Title:  Distribution and size–age composition of Antarctic krill (Euphausia superba ... ) in the South Orkney Islands region (CCAMLR Subarea 48.2). Abstract / Description:  The distribution, size–age ... . The distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes ... of a 1+ age cohort in the area around the South Orkney Islands. One of the most obvious reasons is the trawl ... 25–30 mm) and 2-year-old krill (age 2+; modal length 40–45 mm); the 3-, 4- and 5-year-old krill age ... 3 and 6). Similar results indicating the absence of krill less than 28–30 mm (1+ age cohort) were reported ... papers have reported the presence of juvenile E. superba (1+ age cohort) of less than 30 mm TL, down ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Author(s): Sologub, D.O. and A.V. Remeslo

10. Status of the Polish FIBEX acoustic data from the West Atlantic

    a period as short as one or two weeks. Given the potential for krill flux in the Bransfield Strait ... one ship. However, in making such a comparison, various important issues must be taken into account ... ; Ichii and Naganobu, 1996). Low density values tended to be away from the shelf and over deep water ... of the southwest Atlantic. Many factors contribute to the observed levels of variability, however one of the most ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Author(s): Trathan, P.N., J. Kalinowski and I. Everson

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