Search results
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A review and update of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified stochastic wave born approximation
(Euphausia superba) between 1997 and present. Over the last five years proportional recruitment as been ... are compared. Biomass estimates from the two algorithms are highly correlated (>0.95), with identical CV’s ... superba) between 1997 and present. Over the last five years proportional recruitment as been extremely low ... the two algorithms are highly correlated (>0.95), with identical CV’s. Use of acoustic windows based ...
Meeting Document : WG-EMM-06/32 : Author(s): C.S. Reiss and A.M. Cossio (USA)
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TEMPORAL CLARIFICATION OF THE TRANSITION FROM BLUE PHASE FINGERLING TO EARLY JUVENILE BROWN PHASE IN NOTOTHENIA ROSSII FROM THE SOUTH SHETLAND ISLANDS
juveniles of 8.5-20.9 cm and predominant age groups 1-2 years. Counting of sclerites facilitated ... in the literature: 1) we believe that the duration of the pelagic fingerling stage at sea is less than one year ... juveniles of 8.5-20.9 cm and predominant age groups 1-2 years. Counting of sclerites facilitated ... in the literature: 1) we believe that the duration of the pelagic fingerling stage at sea is less than one year ...
Meeting Document : WG-FSA-09/32 : Author(s): E. Barrera-Oro, E. Moreira, N. Alescio and E. Marschoff (Argentina)
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Management of C. gunnari in Subarea 48.3
with increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining ... by fishing, under conditions where M is assumed to be highly variable from year to year. Author(s): Kirkwood ... of icefish by Antarctic fur seals in years of poor krill availability. Thus natural mortality of icefish may ...
Meeting Document : WG-FSA-97/38 : Author(s): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.
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Progress report on collaborative research for otolith chemistry of Antarctic toothfish Dissostichus mawsoni in the Southern Ocean
Abstract: Otolith chemical analysis is one of important and useful approaches to reveal the stock ... -FSA 2018 about the international collaboration on otolith microchemistry of D. mawsoi, this progress ... Otolith chemical analysis is one of important and useful approaches to reveal the stock structure ... and connectivity of Dissostichus mawsoni in the Southern Ocean. Recalling the suggestion from WG-FSA 2018 about ...
Meeting Document : WG-FSA-2019/61 : Author(s): G.P. Zhu
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Cephalopods: Trophic modelling of the Ross Sea
of squid found there, arrow squid (Nototodarus sloani), suggests that the animals live for around one year ... was poorly sampled. The two size classes of paralarvae are possibly two year classes (Lu & Williams 1994 ... ) although they could also represent more than one spawning time in a year (see Cherel & Weimerskirch 1999 ... to grow with eggs maturing and being released one or two at a time. The numbers of eggs produced ...
Document : Site Section: Publications
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Catch per unit effort data from the early years of commercial krill fishing operations in the Atlantic sector of the Antarctic
in single years, between years on a Subarea and Area basis, and between oceanic and shelf regions. Results ... show that the CPUE may differ between Subareas, years and shelf/oceanic regions. Obviously ... observed in the years 1975/76 and 1980/81, wheras the lowest CPUE occurred in Subarea 48.3 in 1977/78 ... , V. Title: Catch per unit effort data from the early years of commercial krill fishing operations ...
Meeting Document : WG-EMM-97/22 : Author(s): Sushin, V., Siegel, V.
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An exploration of the biological data used in the CCAMLR Subarea 48.3 Patagonian toothfish stock assessments
Abstract: WG-FSA 2018 noted that changes in productivity parameters may impact assessment ... WG-FSA 2018 noted that changes in productivity parameters may impact assessment estimates ...
Meeting Document : WG-SAM-2019/32 : Author(s): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby
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Plans for a multi-national coordinated investigation focusing on the krill-based ecosystem in Area 48 during the 2015-16 austral summer
collection from research and fishing vessels, together with remotely sensed data obtained from moorings ... research and fishing vessels, together with remotely sensed data obtained from moorings and gliders ...
Meeting Document : WG-EMM-14/10 : Author(s): J. Watkins (United Kingdom), O.R. Godø, K. Kovacs (Norway) and P. Trathan (United Kingdom)
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Reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in the 2010/11 and proposal of the consecutive survey in the 2011/12
, although there was no significant difference. Among two species of toothfish, Dissostichus mawsoni ... for D. mawsoni. were higher than those recorded in the previous two fishery periods conducted in earlier seasons ... the three years. Total of 62 individuals of toothfish with good physical condition were tagged and released ... in the 2009/10 survey, although there was no significant difference. Among two species of toothfish ...
Meeting Document : WG-SAM-11/05 : Author(s): K. Taki, T. Iwami and M. Kiyota (Japan)
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Dissostichus eleginoides South Georgia (Subarea 48.3)
401 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 0 10 20 30 40 50 Age R el at iv e Vu ln er ab ... at liberty for one year. By contrast, 50% of fish recaptured in both 2003 and 2004 had been at liberty ... for two or more years. Figure 5.11 shows that recaptures were initially concentrated in the Shag Rocks ... below 20% of its estimated pre-exploitation level of not more than 10% over the 35-year projection ...
Document : Site Section: Publications