Résultats de la recherche
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Population assessment of Patagonian toothfish in the north of Subarea 48.4 – 2010 update
. eleginoides tagged and released in 2009/10, bringing the total to 1,547 in all seasons; There were 18 D ... . eleginoides tag recaptures in 2009/10, a total of 72 in all seasons; The length-frequency of 2009/10 captures ... . CASAL estimates a large recruitment event in early the early 1990s and faster growth rates than those ... currently assumed for the 48.3 population CASAL estimates of D. eleginoides population size in the North of ...
Meeting Document : WG-FSA-10/39 : Auteur(s): J. Roberts and D. Agnew (UK)
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
Abstract: The current season (2015/16) is the first one of the second three-season research in ... data-poor fisheries. In the present report, the next season research plan in Division 58.4.1 was made ... . population(s) in data- poor exploratory fisheries. During the second three-season research, we will continue ... current research style in the current research blocks for the next season research with the sample sizes ...
Meeting Document : WG-SAM-16/04 : Auteur(s): Delegation of Japan
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Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Division 58.4.2
Abstract: The current season (2015/16) is the first one of the second three-season research in ... data-poor fisheries. In the present report, the next season research plan in Division 58.4.2 was made ... . population(s) in data- poor exploratory fisheries. During the second three-season research, we will continue ... current research style in the current research blocks for the next research with the sample sizes ...
Meeting Document : WG-SAM-16/05 : Auteur(s): Delegation of Japan
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Detecting trends in the krill fishery
stocks is of limited value in plotting trends in the fishery at its current level. Predictions by Members ... found that they are generally less accurate than will be necessary to detect trends in the future ... . Economic information on the krill fishery has been difficult to access in the past but will be necessary to ... generally available in the Scientific Committee. Technological information may provide early warnings of ...
Meeting Document : WG-EMM-02/25 : Auteur(s): S. Nicol and J. Foster (Australia)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Bird Island, South Georgia during the 1999 winter and the 1999/2000 pup rearing season
and a 94% decrease on the highest previous total (1992). Four of these animals wereentangled in ... plastic packaging bands, double that observed in the 1998 winter, and a return to thehigh levels observed ... on the 1998 winter. The number of seals observed entangled in the summer was the second lowest ... recorded to date,being 42% lower than in the 1998/99 season. The proportion of adult animals affected was ...
Meeting Document : SC-CAMLR-XIX/BG/02 : Auteur(s): Delegation of the United Kingdom
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Summer distribution, abundance and structure of krill populations (Euphausia superba and Euphausia crystallorophias) sampled by plankton net in the western Ross Sea (January–February 2000)
of krill in the western Ross Sea (Antarctica). A midwater sampler-trawl (Hamburg Plankton Net) was ... double oblique tow. Mean relative biomass of Antarctic krill Euphausia superba, in the area north of ... 1000m3. The high abundance of Euphausia superba (1510 g/1000m3) found in a single haul on the Mawson Bank ... Area (73°S 173°E) was remarkable. Ice krill Euphausia crystallorophias replaced the Antarctic krill in ...
Meeting Document : WG-EMM-00/38 : Auteur(s): M. Azzali, A. Sala and G. Brancato (Italy)
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Revised proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
from a well- designed survey in the Ross Sea could be a useful input into the stock assessment model ... survey was presented to the 2011 meeting of WG-SAM. In this paper we provide an update of the preliminary ... for the research proposal for a longline survey of pre-recruit toothfish in the southern Ross Sea ... location, the number of sets in each stratum required to achieve target c.v.s, and associated sampling ...
Meeting Document : WG-FSA-11/47 : Auteur(s): S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
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AERIAL SURVEYS OF WEDDELL SEALS DURING 2007-08, WITH NOTES ON THE HISTORY OF AERIAL CENSUSES IN THE ROSS SEA AND RECOMMENDATIONS FOR CONTINUED COUNT EFFORT
Antarctic toothfish (Dissostichus mawsoni), and currently there is no ecosystem monitoring program (CEMP) in ... place under CCAMLR with respect to the Ross Sea toothfish fishery. In a previous paper submitted to EMM ... in 2007 (WG-EMM 07/13), we described procedures whereby aerial photography could be used to monitor ... Weddell seals along the Victoria Land coast. That area would be important to monitor changes in ...
Meeting Document : WG-EMM-08/23 : Auteur(s): D. Siniff and D. Ainley (USA)
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The feeding peculiarities of the Antarctic seals in the region of the archipelago of Argentina Islands
that krill (Euphausia superba) is the main type of food for the major species of seals in region. Krill ... growth in comparison with literary data аccording to Weddell seal (L. weddelli) newborns monitoring. It ... testifies to enough qualitative and sufficient forage reserve for pregnant Weddell seal females in ... archipelago water area in which diet krill prevails also (about 70 %). Considering that from 5 seals species ...
Meeting Document : WG-EMM-12/P01 : Auteur(s): I. Dykyy
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Physical and behavioural influences on larval fish retention: contrasting patterns in two Antarctic fishes
Abstract: Waters around South Georgia are amongst the most productive in the Southern Ocean, and ... support internationally important fisheries. However, there is significant inter-annual variability in ... retention of the planktonic stages (eggs and larvae) of marine fish can play a key role in the maintenance ... grounds may contribute to the failure of the N. rossii population to recover from its collapse in the ...
Meeting Document : WG-FSA-12/P10 : Auteur(s): E.F. Young, J. Rock, M.P. Meredith, M. Belchier, E.J. Murphy and G.R. Carvalho