Search results
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Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)
Subarea 48.3 Marlow et al. 107 Figure 5 superimposes the observed growth of these fi sh and the mean ... and there have been no reported recaptures of these fish tagged at South Georgia or elsewhere in the ... Rocks (Subarea 48.3) Abstract / Description: In 2000 the UK started a Patagonian toothfish ... (Dissostichus eleginoides) tagging program to investigate the spatial and temporal movement of fish and to ... there is greatest fishing activity. Most of the fish recaptured to date were tagged and released during ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Author(s): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson
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Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3
the krill. This means the number of shooting and hauling operations is reduced, which may also reduce ... the incidence of seal entanglement. InSung Ho A marine mammal mitigation measure was ini- tially deployed ... by the InSung Ho between hauls 19 and 24 (12 and 13 August 2004). This device was constructed from 240 mm ... Mitigation measure Atlantic Navigator VUT 22 Jun 17 Jul 15 13 SLED device InSung Ho KOR 11 Aug 25 Aug 103 ... (WG-EMM) in Siena, Italy, the UK reported on the by-catch of fur seals (Arctocephalus gazella) in the ... avoid fur seal deaths in the fishery. WG-EMM requested that the UK provide further details of the ... Abstract / Description: At the 2004 meeting of the Working Group on Ecosystem Monitoring and Management ... seal entanglements on krill vessels fishing around South Georgia in the 2004 fishing season. The ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 195–205 : Author(s): Hooper, J., J.M. Clark, C. Charman and D. Agnew
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Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
of the Commission for the Conservation of Antarctic Marine Living Resources. FAO, Rome. García de la Rosa, S.B ... in such studies should be representative of the size range consumed by predators. File: 09morley ... holotrachys) caught as by-catch in the Patagonian toothfi sh (Dissostichus eleginoides) fishery in Subarea ... 48.3 was measured and weighed, and the usefulness of otoliths as predictors of fish size was determined ... less accurate estimates of fish length. Seasonal variations in fish mass with reproductive condition ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Author(s): Morley, S. and M. Belchier
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Modelling krill recruitment
observed values of the mean proportion of recruits and its variance to model recruitment in a krill ... A method is developed for using observed values of the mean proportion of recruits and its variance ... , Australia Abstract A method is developed for using observed values of the mean proportion of recruits ... recruitment, in terms of a mean and variance. The aim of this paper is to present a me thod of us ing ... , the recruitment is a random variable with constant mean and variance, that is the recruitments over a series ... a method of converting the parameters we can estimate, the mean and variance in the proportion ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 49–54 : Author(s): W.K. de la Mare
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Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations
. Difficulties in sampling krill across their full habitat and in experimentation mean that sig- nificant ... , 1989; Nicol et al., 2000a; Siegel, 2005) with a conservative recent estimate of 19 million km2 ... m–2 is a product of the no. m–3 and the habitat volume (Figure 1). This means that the great habitat volume ... studies dur- ing the CCAMLR 2000 Krill Synoptic Survey of Area 48 revealed broadly similar mean biomass ... include krill in food-web models and to guide modellers to key sources of data. It describes the strengths ... . Temporally, the intense (order of magnitude) interannual variability in krill population size within the ... are still not yet confident which are the major predators of krill but studies increasingly suggest ... Paper Title: Fitting Euphausia superba into Southern Ocean food-web models: a review of data ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Author(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)
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Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)
to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively. No difference was found between ... of the otoliths (83.6%) were estimated to be from fi sh 1+ or 2+ years old, with mean total lengths of 32.5 cm ... the 0+ cohort comprised only six fi sh. The mean total length (TL) for each cohort is shown in Table ... peaks Length-at-age in juvenile Patagonian toothfi sh 4 Ashford et al. Table 1: Mean total length ... (TL) for each age cohort. Age Mean TL (cm) SE n 0+ 19.8 0.83 6 1+ 32.5 0.17 121 2+ 41.3 0.38 113 ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Author(s): Ashford, J., C. Jones, S. Bobko and I. Everson
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Age and growth of Antarctic euphausiacea (crustacea) under natural conditions
3TOi TOQKH 3peHHH. SbIn 3aHOBO npoaHanH3HpoBaH ce30HHbli POCT AnH BHAa Euphausia triacantha ... regressions. No difference in growth of krill was observed between the Antarctic Peninsula area and the ... Abstract / Description: Five species of Antarctic euphausiid crustaceans were studied from the Antarctic ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... shorter life span than females, while their growth rate is similar. A short description of the life cycle ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Author(s): Siegel, V.
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
here, which, for the same data, gave a mean of 78.5 and confidence limits of 77.9 and 79.0 cm. We ... (Dissostichus eleginoides) caught in the commercial fishery within Subarea 48.3. The results for 1996 indicate ... that L m50 occurs at 78.5 cm total length for male and 98.2 cm for female fish. In 1997 the results for ... male fish were essentially the same. For female fish there is evidence that in 1997 a significant ... bias leading to the overestimation L m50 of calculated by conventional methods. Further analysis ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Author(s): Everson, I. and A.W. Murray
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Southern elephant seals and CCAMLR
southern elephant seal (Mirounga leonina) in the Kerguelen province of the Southern Ocean. Sub-populations ... possible causes of the elephant seal’s decline in the region. Such explanations assume that a communal ... it is hoped that this will help to elucidate the reasons for the observed decline of M. leonina in ... research findings of primarily South African (including some French and Australian results) studies on the ... seal (Mirounga leonina) in the Kerguelen province of the Southern Ocean. Sub-populations of this ... causes of the elephant seal's decline in the region. Such explanations assume that a communal feeding ... (feeding) and two terrestrial (fasting) phases can be distinguished in the annual cycle of at least the ... may be part of a long-term fluctuation in the breeding population size related to density as the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 465-473 : Author(s): Bester, M.N. and D.G.M. Miller
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Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia
Abstract / Description: Trends in mean length and maturity stage of Patagonian toothfish (Dissostichus ... of changing mean length at depth with month was detected, suggesting movement of animals both up and down ... slope at particular times of year. Months with a high mean length at depth are May and August ... , and with a low mean length at depth- April and July. Examination of maturity data suggests that in addition ... 2QA, United Kingdom Abstract Trends in mean length and maturity stage of Patagonian toothfish ... . A statistically significant pattern of changing mean length at depth with month was detected, suggesting movement ... of animals both up and down slope at particular times of year. Months with a high mean length at depth ... are May and August, and with a low mean length at depth - April and July. Examination of maturity data ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Author(s): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce