Résultats de la recherche
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Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)
at 42°S after about one year at liberty from some opportunistic tagging carried out on a toothfish ... experimental pot fishing in 2000 and 2001, and have been at liberty from one to two years. Four fish were ... an approximate spring balance measurement that does not provide useful data for growth comparisons ... estimates of growth to be validated. In this analysis, three growth curves are used to predict an age at ... and one deepwater haul (500 m) that caught larger toothfi sh (60–80 cm) for tagging. During the fi ... , were caught and tagged in October 2001 northeast and southwest of Shag Rocks. An additional 80 fi sh ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Auteur(s): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean.
. mawsoni on BANZARE Bank is similar to that hypothesised for the Ross Sea population with analogous ... 10 20 30 40 50 60 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 80 90 100 110 120 ... longline set and mean CPUE for Dissostichus eleginoides (black) and D. mawsoni (red). 0 10 20 30 ... eleginoides D issostichus m aw soni 0 20 40 60 80 100 120 40 60 80 100 120 140 160 180 0 10 20 30 40 ... recorded for up to 30 individuals. Gonad stages were usually recorded using the CCAMLR five-point staging ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 145–153 : Auteur(s): Taki, K., M. Kiyota, T. Ichii and T. Iwami
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Fatty acid and stable isotope analyses to infer diet of Antarctic toothfish caught in the southern Ross Sea
in the southern Ross Sea Abstract / Description: To infer important prey resources for Antarctic ... sample collection and biomarker analyses for more pelagic and benthic biota are needed to better ... isotope ratio has been used extensively to delineate the trophic position of an animal (DeNiro and ... for freeze-dried organic mat- ter sources and animal tissues with a solution of methanol and ... programmed at 180°C for 5 min, raised from 180°C to 230°C at 3°C min–1, and then finally maintained at 230 ... for 20 replicates of urea was approximately 0.1‰ and 0.3‰ for δ13C and δ15N respectively. δ15N was ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 21–36 : Auteur(s): Jo, H.-S., I. Yeon, C. Lim, S.M. Hanchet, D.-W. Lee and C.-K. Kang
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Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003
and relating to fishing techniques) have an effect on the observed numbers of seabirds caught ... petrels and grey petrels is explained by the time of year, geographical area and type of longliner (manual ... breeding season, except for giant petrels. The highest mortality of white-chinned petrels, grey petrels ... Delord et al. 56 above the water) were not reported for each voy- age and each vessel. Thus, it was ... ) varies considerably for a particular year according to the geographical area, and for a particular ... the various species is however different from the previous year. Between 70 and 80% of the in ... analysed for all species caught. In addition to the factors mentioned in the previous analyses (Table 5 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Auteur(s): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol
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Comparative feeding ecology of Patagonian toothfish (Dissostichus eleginoides) in the southwestern Atlantic
continental shelf/slope between 46°-55°S and 60°-64°W, and around South Georgia between 53°-55°30' and 3 ... Argentinian continental shelf/slope, the length of D. eleginoides ranged from 30 to 95 cm total length (TL ... main line of 20 000 m, with branch lines each with 90 hooks (model 'Ancora', 30 mm gap) spaced at 1 m ... ) mentioned that D. eleginoides has been caught around the Crozet Islands, at depths of 90 to 1 020 m, with ... ) with a modal length of around 60 cm TL are Feeding Ecology of Patagonian Toothfish 70-79 80-89 90 ... , krill abundance is low and krill do not constitute an important food item for D. eleginoides ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 105–124 : Auteur(s): García de la Rosa, S.B., F. Sánchez and D. Figueroa
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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
licensed participants. Catch levels for an exploratory fi shery are also managed at a precautionary level ... in the previous year, the remainder were largely partly full (15% held traces of food, 20% held ... . Total length (cm) 60 80 100 120 140 160 180 200 N um be rs o f f is h 0 20 40 60 80 100 120 ... f f is h 0 20 40 60 80 100 120 2001 fishing season 2002 fishing season females n = 2 234 x ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Auteur(s): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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Editorial
Science coincides with the 30th meeting of the CCAMLR Scientific Committee. Over those 30 years, several ... -based decision-making by CCAMLR. One of the most striking changes over the past 30 years is the increase ... of analysis of data gathered on fishing vessels to using trends in patents to predict the future for ... specialist groups as well as the more traditional peer-review process. The papers in this volume of CCAMLR ... coincides with the 30th meeting of the CCAMLR Scientific Committee. Over those 30 years, several thousand ... decision-making by CCAMLR. One of the most striking changes over the past 30 years is the increase in the ... analysis of data gathered on fishing vessels to using trends in patents to predict the future for krill ... well as the more traditional peer-review process. The papers in this volume of CCAMLR Science broadly ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 167 : Auteur(s): Editors
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Management and uncertainty: the example of South Georgia
. From an examination of Articles IX 2(f) and XV 2(e, d) of the CCAMLR Convention it follows that a ... (including the effects of doing nothing) could provide a procedure for providing advice that could cope with ... millions before 1965, to some 3 to 6 millions for the 1967 to 1975 year-classes, to possibly only 40,000 ... in the 1980 year-class (paragraph 20 of the report). - 346 - Accepting that the decline in ... whatever is done. There is no support for this). The inconsistencies chiefly concern the age data, or ... results arising from those data. The age-composition for 1970/71 (Figure 2 of the report) is unusual ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Auteur(s): Gulland, J.A.
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ... detecting tagged fish have been inconclusive due to low numbers of recaptures after controlling for spatial ... controlling for spatial and temporal variables using a case-control study design, and uses this method to ... develop relative indices for detection rate performance for vessels involved in the Antarctic toothfish ... In CCAMLR Subareas 88.1 and 88.2, tag- release and -recapture data are used in an integrated age ... parameters. For example, under- estimating the tag-detection rate of the fleet will result in an ... calculation by using CCAMLR Science, Vol. 20 (2013): 73–80 73 QuantIfyIng vessel performance In the ccamlr ... to the annual fishing trips for each vessel. methods Initially, the case is defined as an ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Auteur(s): Mormede, S. and A. Dunn
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Commercial krill fisheries in the Antarctic, 1973 to 1988
: STATLANT data reported to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ... ) are used to discern observable trends in catch and effort for the Antarctic krill (Euphausia superba ... split-years; a split-year being the twelve month period from 1 July in one year to 30 June in the next ... /76 season when no krill were taken in this area) than in Statistical Areas 58 and 88 for anyone year ... fished/split-year); mean CPH/fishing season (Le. mean monthly CPH for the months when fishing took ... place); and mean CPH/year (Le. mean monthly CPH for a full 12 month split-year). Values for the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 229–281 : Auteur(s): Miller, D.G.M.