Search results
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Information on the spawning of Dissostichus mawsoni from Subareas 88.1 and 88.2 in the 2003/04 season
Abstract: Data on maturity, gonadosomatic index (GSI) and length weight of Antarctic Toothfish ... . The onset of spawning in D. mawsoni is in December and continues until at least June, in both Sub ... -areas 88.1 and 88.2, and spawning occurs on isolated geographic features north of the main Antarctic ... shelf areas. One of the mature fish caught in Sub Area 88.2 had originally been tagged in McMurdo Sound ...
Meeting Document : WG-FSA-04/34 : Author(s): G.J. Patchell (New Zealand)
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
Abstract: Krill stock composition and distribution patterns in the vicinity of Elephant Island ... . The general distribution of krill length and maturity classes conformed to previous descriptions and ... appears to be a recurring and predictable aspect of the krill stocks in the Antarctic Peninsula region ... months. The overall abundance, maturity stage composition and reproductive activity of krill appeared to ...
Meeting Document : WG-KRILL-93/08 : Author(s): V. Loeb (USA) and V. Siegel (Germany)
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Age and growth of Antarctic Euphausiacea (Crustacea) under natural conditions
Abstract: Five species of Antarctic euphausiid crustaceans were studied from the Antarctic ... regressions. No difference in growth of krill were observed between the Antarctic Peninsula area and the ... shorter life span than females, while their growth rate is similar. A short description of the life cycle ... and generation time of each species is given. In general, Antarctic euphausiids seem to remature and ...
Meeting Document : SC-CAMLR-VI/BG/24 : Author(s): V. Siegel (FRG)
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Analysis of trends in Japanese krill fishery, and its implication
fishing season was analysed. By using statistical modeling (linear mixed model) a series of predicted ... intra- and inter-annual trends of standardized fishery indices are presented. The results strongly ... point which is just enough to maintain the best factory performance. The status of fishing was not clear ... vessels. It is also important to undertake the same kind of analysis for the fleets from other fishing ...
Meeting Document : WG-EMM-04/52 : Author(s): S. Kawaguchi, S. Candy, S. Nicol (Australia), K. Taki and M. Naganobu (Japan)
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Counts of surface-nesting seabirds at Marion Island in 2003/04
Abstract: Numbers of gentoo penguins Pygoscelis papua, macaroni penguins Eudyptes chrysolophus ... availability of prey to birds foraging near island. Numbers of wandering albatrosses Diomedea exulans, grey ... appear stable at the island, but often with large fluctuations in numbers breeding. Numbers of dark ... . Klages, P.G. Ryan, L.G. Underhill and L. Upfold (South Africa) Title: Counts of surface-nesting seabirds ...
Meeting Document : WG-EMM-04/29 : Author(s): R.J.M Crawford, N. de Bruyn, B.M. Dyer, B. Hanise, N.T.W. Klages, P.G. Ryan, L.G. Underhill and L. Upfold (South Africa)
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Observations on the diet of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
Abstract: The diet of Antarctic toothfish Dissostichus mawsoni captured by bottom longline in the ... 62–197 cm TL. A high proportion of stomachs sampled were empty (34% in 2001 and 49% in 2002) and the ... remaining stomachs often contained prey in advanced stages of digestion, making prey identification ... difficult. Fish were the most important prey category (86% of stomachs in 2001 and 78% in 2002), in ...
Meeting Document : WG-FSA-02/15 : Author(s): J.M. Fenaughty, D.W. Stevens and S.M. Hanchet (New Zealand)
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DEMOGRAPHIC STUDIES OF ANTARCTIC KRILL IN THE SOUTH ORKNEY ISLANDS AREA 2009, FIELDWORK AND PRELIMINARY RESULTS
maturation stages was determined from 4678 individuals and consisted of ~19% juvenile and sub adults, ~17 ... % adult males and ~64% adult females (overall adult sex ratio: 1:4). The proportion of immature krill was ... similar throughout the study period; whereas the proportion of males decreased and the female proportion ... increased. This field work was part of the Antarctic Krill and Ecosystem Studies (AKES) and the purpose was ...
Meeting Document : WG-EMM-09/10 : Author(s): B.A. Krafft and G. Skaret (Norway)
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The diet of the blue-eyed shag Phalacrocorax atriceps during summer at Nelson Island, Antarctica: temporal variations and consumption rates
Abstract: One hundred and thirty nine stomach contents of the blue-eyed shag Phalacrocorax ... important by number (60%). The mean mass of the stomach contents was 220 g, whereas the mean number of fish ... was 7.4 (range 1-34). Eight hundred and sixty four bird h-1 of observations on 5-7 nests showed that ... . Author(s): Silva, P., Barrera-Oro, E., Casaux, R., Favero, M., Coria, N. Title: The diet of the blue ...
Meeting Document : WG-EMM-95/82 : Author(s): Silva, P., Barrera-Oro, E., Casaux, R., Favero, M., Coria, N.
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Estimates of local biomass with uncertainty for Antarctic (Dissostichus mawsoni) and Patagonian (D. eleginoides) toothfish in research blocks in Subareas 48.6 and 58.4
Abstract: Local biomass of toothfish in research blocks in Subareas 48.6 and 58.4 have been ... of WG-SAM. The trend analysis decision rules developed by WG-FSA 17 were applied to provide catch ... and 486_4. However, as the trend in all three of these research blocks was declining the revised catch ... limit is determined as 0.8 times the existing catch limit. The revised catch limits for all but one of ...
Meeting Document : WG-FSA-18/12 : Author(s): CCAMLR Secretariat
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Habitat use of type – C killer whales (Orcinus orca) in the Ross Sea, Antarctica
the horizontal behaviour of tagged whales. The Bayesian state-space model revealed discrete, largely ... non-overlapping Areas of Restricted Search (ARS) of killer whales along the coastline which matched ... the pattern of deeper dives thus indicating possible feeding grounds along the Ross Sea coast ... . L. Pitman and S. Panigada Title: Habitat use of type – C killer whales (Orcinus orca) in the Ross ...
Meeting Document : WG-EMM-2019/08 : Author(s): G. Lauriano, E. Pirotta, T. Joyce, R. L. Pitman and S. Panigada