Résultats de la recherche
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Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters
commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ... revealed average levels of genetic variability, with the proportion of polymorphic loci, P = 0.278, mean ... requires analysis of larger sample sizes with more comprehensive electrophoretic screening. Genetic data ... indicate that localised stocks of C. gunnari exist in South Georgia waters. The questions posed by the non ...
Meeting Document : WG-FSA-90/10 : Auteur(s): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)
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The 2013 annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the waters of Heard Island (Division 58.5.2)
(HIMI) was completed during April of 2013. The catches of D. eleginoides for 2013 were half that of 2012 ... take. The catch of invertebrates in the 2013 survey was 6 t, which was lower than the long term average ...
Meeting Document : WG-FSA-13/21 : Auteur(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Molecular analysis of stomach contents from Antarctic toothfish (Dissostichus mawsoni) collected from Area 58 and 88 from 2016 to 2018
compared to the morphological analysis especially it was useful to identify the species with similar ... between two species appear to be related to the size of D. mawsoni. Many of fish taxa in the stomach of D ... . mawsoni showed the multiple haplotypes by NGS analysis suggesting that those haplotypes would provide more ... should be made to obtain the longer DNA marker for the identification of each species and its haplotypes ...
Meeting Document : WG-FSA-2019/37 : Auteur(s): S.R. Lee, S.-G. Choi, S. Chung, D.H. An and H.-W. Kim
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Estimating optimal observer coverage in the Antarctic krill fishery
ratio is sufficiently close to 50% that sampling needs to be efficient at both vessel and haul level. It ... is proposed that an efficient sampling proportion, at least for South Georgia, should be >50% of ... . The South Georgia data suggest that such strategies should be pursued for at least four years before ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... here would suggest that this number should be four years or more. It was not possible to test, with ... variance. However, the ratio is sufficiently close to 50% that sampling needs to be efficient at both ... levels in that fishery. The South Georgia data suggest that such strategies should be pursued for at ... devel- opment, the CCAMLR Scientific Committee has expressed concern that such an increase should be ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Auteur(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards
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SC-CAMLR-SSP/9
with assessment procedures that are quite similar to those commonly used in the statistical sampling ... series of data which can be analysed in conjunction with stock dynamics models. An interim approach is ... sensitive to the tails of age distributions. This suggests that the target function should be weighted by ... obtained with these methods when they are fitted to catch curves that come from virgin stock. Also, the ...
Document : Site Section: Publications
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Acoustic and catch data collected by the fleet – relevance for feedback management
coherent from year to year during the recent 6 years with some moderate variations, as also is the effort ... over the day and night and during the seasons. Diel migration, with krill being distributed close to ... obvious trend indicating declining krill density until May in the study year. Author(s): O.R. Godø, T ...
Meeting Document : WG-EMM-15/13 : Auteur(s): O.R. Godø, T. Klevjer and G. Skaret (Norway)
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CCAMLR Statistical Bulletin, Vol. 22 (2000–2009)
adjusted since previous volumes. Where this is the case, the values given in the present volume should be ... considered to be more accurate. ... this is the case, the values given in the present volume should be considered to be more accurate ... . This volume of the Statistical Bulletin should be referenced as: Hardcopy version CCAMLR. 2010 ... refers to the calendar year in which the season ends (e.g. 2001/02 is abbreviated to 2002). The ... August, and Q4 from September to November. Annual landing and trade data reported under the CDS in ...
Document : Site Section: Publications
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An interlaboratory comparison of ages estimated for Dissostichus eleginoides from the Argentine Sea, southwest Atlantic Ocean
carried out with NIWA, and the results presented, it is apparent that the NIWA preparation method produced ... otolith margin where the zones can be very narrow. Consequently, INIDEP has adopted the NIWA method to ... otoliths could not be classified as easy to read, the clarity of their zones is quite similar in the South ...
Meeting Document : WG-FSA-04/45 : Auteur(s): M.C. Cassia (Argentina), P.L. Horn (New Zealand) and J.R. Ashford (USA)
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in Subarea 48.6 in 2014/15
sizes would be vulnerable like the neighbour divisions if there is the same population. During the 2004 ... considering the precautionary catch limit. Therefore, the catch limits that the meeting got in 2013 meetings ... increased to get more recapture. The food-web of Dissostichus spp. has started to be studied in the southern ... bottom longline vessel, KINGSTAR belonged to Sunwoo Company in accordance with paragraph of CM 24-01 and ...
Meeting Document : WG-FSA-14/37 : Auteur(s): Delegation of the Republic of Korea
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Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands during the 1994/95 austral summer
of by-catch fishes was higher in krill hauls with the low catch rates. Author(s): Iwami, T. Title ...
Meeting Document : WG-EMM-95/56 : Auteur(s): Iwami, T.