Search results
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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
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WG-FSA-16
/35 Final report on the survey for Dissostichus spp. in Subarea 48.2 (Phase one 2016) A. Zuleta ... , A. Dunn, D. Di Blasi and D. Stevens WG-FSA-16/58 Update of ongoing work on age and growth of Antarctic ... SSRUs 882C–H for the years 2002–03 to 2015–16 using a two-area model S. Mormede, K. Large and S. Hanchet ... during the three-year period 2016/17–2018/19 Delegation of Uruguay WG-FSA-16/P01 Parasites ...
Meeting
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Spatial distribution of foraging by female Antarctic fur seals
they forage intensively. However, mean consumption was about one-tenth of the mean density of krill. Author ... they forage intensively. However, mean consumption was about one-tenth of the mean density of krill. ... the same pattern of travel. There was no detectable difference in this behavior among years when there were ... at which the offspring was being raised. When this constraint was removed at the end of lactation, females ...
Meeting Document : WG-EMM-01/26 : Author(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2018
combined) were also two to three times greater than those of last year. Catches of skates were similar ... for L. squamifrons has been low for the past 4 years. The 2018 biomass estimates for each of the three Bathyraja spp ... also two to three times greater than those of last year. Catches of skates were similar to those ... been low for the past 4 years. The 2018 biomass estimates for each of the three Bathyraja spp. (skates ...
Meeting Document : WG-FSA-18/55 : Author(s): G. Nowara, T. Lamb and P. Ziegler
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Fishery Report 2013: Dissostichus eleginoides South Georgia (Subarea 48.3)
for age determination of the target and most frequently taken by-catch species. Length-frequency ... depth preferences with age, with juveniles (<50 cm) living on the continental shelf and moving ... and maturity. Otoliths are collected by observers for an ageing program that provides length-at- age data ... was assessed using an age-structured CASAL integrated stock assessment model for both sexes combined with ages ...
Document : Site Section: Publications
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Convention on the Conservation of Antarctic Marine Living Resources
of whom shall serve for a term of two years and shall be eligible for re-election for one additional term ... to this Article, a regional economic integration organisation shall have only one vote. Article XIII ... this Convention applies. The first meeting shall, in any event, be held within one year of the entry into force ... of the Commission. Article XXX 1. This Convention may be amended at any time. 2. If one-third of the Members ...
Document : Site Section: Publications
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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
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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
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SC-CAMLR-38
A proposal for a Krill Ageing Inter-laboratory Calibration Workshop Delegations of Australia, China, Japan ... CCAMLR-38/20 Proposal to designate a newly-exposed marine area adjacent to Pine Island Glacier (Subarea ... for managing the toothfish fishery: Subarea 88.1 and SSRUs 882 А–В in the 2018/19 season Delegation ... of the Subgroup on Acoustic Survey and Analysis Methods (Bergen, Norway, 26 to 30 August 2019) SC-CAMLR-38/07 ...
Meeting
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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