Search results
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Demographic studies of Antarctic krill Euphausia superba Dana in the Cooperation and Cosmonaut Seas (Indian sector of the Southern Ocean)
and mortality rates. The duration of the life cycle of E.superba exceeded 5 years in the Cosmonaut Sea ... and 6 years in the Cooperation Sea. Assuming growth for only 180 days per year, growth rates ranged from 0.120 ... -0.133 mm.d-1, during the first year of life, to 0.019-0.022 mm.d-1 during the fifth year. Von ... method ranged from 0.52, during the maturation period, to 1.1-2.41, during the first and last years ...
Meeting Document : WG-Krill-94/16 : Author(s): E.A. Pakhomov (Ukraine)
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Temporal scales of foraging in a marine predator: implications for interpreting the distribution of prey
by short (5 rain) travel durations. In a study lasting 5 years, the distributions of travel durations ... between bouts of feeding changed between years. These changes suggested either that the structure ... and/or the spatial distribution of krill swarms varied between years. The behavior of fur seals suggested ... -scale level. Only in one year of the study (1990/91) were there indications that fur seals had ...
Meeting Document : WG-EMM-95/23 : Author(s): Boyd, I.L.
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Spatio–temporal dynamics of Antarctic krill fishery: identification of fishing hotspots
is presenting consistent FH across years, particularly during those years when the precautionary catch limit ... of radius 25 km, and have a high catch density (>10 ton∙km-2) during years when the catch limit ... is reached. The analysis show that the krill fishing fleet is concurring to know fishing grounds year after ... year, where they obtain high catches, and that the catch density (ton∙km-2) inside the FHs ...
Meeting Document : WG-EMM-16/52 : Author(s): F. Santa Cruz, B. Ernst and J.A. Arata
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Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
(Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... . and E. frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion ... energy content of individual meals was often above average in years when the diets contained fewer ... euphausiids, but fledging mass was always below average in these years. Although macaroni penguins are able ...
Meeting Document : WG-EMM-12/17 : Author(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
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AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
. Age at sexual maturity was estimated to be about 2 years for females and 2.5 years for males. Compared ... of adult specimens between 1 and 3 years of age, with very few older fish. Author(s): M. La Mesa, A. De ... for males. Age at sexual maturity was estimated to be about 2 years for females and 2.5 years for males ... consisted mainly of adult specimens between 1 and 3 years of age, with very few older fish. ...
Meeting Document : WG-FSA-08/33 : Author(s): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)
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Long term variability in the diet and reproductive performance of penguins at Bird Island, South Georgia
Abstract: Inter-annual variability in diet during crèche (December to February) over 22 years ... present in 89 % of samples and were the main prey (> 50 % by mass) in 10 years of the study. Antarctic ... and were the main prey in 12 years, with Champsocephalus gunnari and Lepidonotothen larseni the most ... Inter-annual variability in diet during crèche (December to February) over 22 years (1989 ...
Meeting Document : WG-EMM-17/P02 : Author(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan
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Population structure of icefish (Champsocephalus gunnari) in the South Georgia area (Antarctic)
in length and older than 6-7 years (10-11 years in the South Georgia area) and considerably lower number ... to assume the common origin of the western and Shag Rock groupings. C.gunnari of two-three years old ... and older than 6-7 years (10-11 years in the South Georgia area) and considerably lower number of large fish ... of the western and Shag Rock groupings. C.gunnari of two-three years old (at the length of 22-23 cm) migrate from ...
Meeting Document : WG-FSA-04/40 : Author(s): Zh.A. Frolkina and I.A. Trunov (Russia)
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Proposal for a CCAMLR-sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
years in Subarea 88.1 and for nine years in Subarea 88.2. The research and assessment work ... locations in different years, making it impossible to develop a consistent time series that would monitor ... The exploratory longline fishery for Dissostichus spp. has now been operating for 14 years ... in Subarea 88.1 and for nine years in Subarea 88.2. The research and assessment work in these areas ...
Meeting Document : SC-CAMLR-XXX/07 : Author(s): Delegation of New Zealand
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Analysis of krill fishery operations in Subarea 48.1: spatial-time distribution of CPUE and fishing efforts
Abstract: In previous years we revealed that period 2006-2011 is characterized by the highest ... values of standardized CPUE indices in the Subarea 48.1 for the last 25 years. We continue to investigate ... methods. Our investigation shows how fishery operated by years and month in each SSMUs with special ... In previous years we revealed that period 2006-2011 is characterized by the highest values ...
Meeting Document : WG-EMM-14/21 : Author(s): S. Kasatkina and P. Gasyukov (Russia)
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Estimating seabird by-catch in CCAMLR longline fisheries
Abstract: After many years of close to zero incidental seabird mortality in the longline fishery ... throughout the CCAMLR Convention Area, recent years have seen an increase in Subarea 48.3 and in Division ... 58.5.2. At the same time, concern has been expressed about the suitability of the method used to raise ... After many years of close to zero incidental seabird mortality in the longline fishery throughout ...
Meeting Document : WG-FSA-17/50 : Author(s): C. Darby and K. Olsson