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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
% of the depth is deemed suitable as habitat for toothfish (120 cells – semi-restricted model), and ... – restricted model) or allowed to occupy the entire Ross Sea region including depths outside of those normally ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ... model estimates fish movements into cells outside of the fished area including those with implausible ...
Meeting Document : WG-FSA-13/53 : Автор(ы): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Feeding ecology of the two sympatric fish species Notothenia rossii and N. coriiceps from western Antarctic Peninsula: a fatty acids and stable isotopes approach
useful tool to elucidate the flow of energy and trophic interactions in an ecosystem and to analyse the ... diet of species that are hard to observe while feeding. Herein we compare FA profiles and SI ... composition (nitrogen, δ 15 N and carbon, δ 13 C) of muscle tissue from two sympatric Antarctic fish species ... - Notothenia rossii and N. coriiceps – that are key components in the inshore ecosystem of the South Shetland ...
Meeting Document : WG-FSA-2019/26 : Автор(ы): E. Moreira, M. Novillo, K. Mintenbeck, E. Barrera-Oro and M. De Troch
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A REVIEW OF THE METHODS USED TO RELEASE SKATES (RAJIIDS), WITH OR WITHOUT TAGS, IN ANTARCTIC EXPLORATORY FISHERIES
line by cutting snoods, and when practical, removing the hooks’. This paper documents the evolution of ... from this programme showing an unquantifiable degree of the survivorship of returned skates, the CCAMLR ... implemented was that some form of in-water release would be the ideal to improve survival chances ... . Subsequently a number of problems have become evident with this method. The Working Group on Fish Stock ...
Meeting Document : WG-FSA-08/30 : Автор(ы): J.M. Fenaughty (New Zealand)
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A guide to identification of fishes caught along with the Antarctic krill
Abstract: A field key to early life stages of Antarctic fish caught along with the Antarctic ... krill is produced. The key includes 8 families and 28 species mainly from the Atlantic sector of the ... , however, it is impossible to discriminate among species of the same family by remarkable characters. A ... species key is not shown for such resemble species and a brief summary of the main morphological features ...
Meeting Document : WG-EMM-07/32 : Автор(ы): T. Iwami and M. Naganobu (Japan)
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Time series of Drake Passage Oscillation Index (DPOI) from 1952 to 2006, Antarctica
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... , between Rio Gallegos, Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula during 1982 ...
Meeting Document : WG-EMM-06/13 : Автор(ы): M. Naganobu and K. Kutsuwada (Japan)
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Summary of Ross Sea skate tagging programme results
Abstract: Over 9,000 skates have been tagged and released in the Ross Sea over a period of seven ... years, and 47 (0.5%) have been recaptured. The recapture of tagged Amblyraja georgiana after up to four ... years at liberty shows that some skates survive and recover from being hauled out of depths of around ... 1,000 m and tagged. In-water tagging greatly reduces the incidence of broken jaws in skates, and ...
Meeting Document : WG-FSA-06/32 : Автор(ы): S.L. Ballara, A. Dunn and M.P. Francis (New Zealand)
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Updated ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
Abstract: The ASPM assessment of the Prince Edward Islands toothfish resource by Brandão and ... updated to take account of further catch, GLM standardised CPUE and catch- at-length information that have ... become available for the year 2004. Twenty year biomass projections under the assumption of various ... constant annual catches are also shown. These suggest that maintenance of the present TAC of 500 tonnes is ...
Meeting Document : WG-FSA-04/37 : Автор(ы): A. Brandão and D.S. Butterworth (South Africa)
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Seasonal variation in acoustic estimates of krill density at South Georgia during 2001/2002
Abstract: Four separate acoustic surveys of Antarctic krill (Euphausia superba) were conducted ... (middle), and one in May 2002 (late). The surveys were the second in a five-year series of observations ... designed to complement and extend an existing time series of summer surveys maintained by the British ... South Georgia have revealed a similar pattern of change to that observed in 2000/2001 and highlight the ...
Meeting Document : WG-EMM-02/39 : Автор(ы): C. Goss, S.A. Grant, N. Cunningham, J.L. Watkins, P.N. Trathan, E. Murphy and K. Reid (United Kingdom)
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Age-at-length of Patagonian toothfish from the Falkland/Malvinas Islands
Abstract: To provide an age-length key for use in modelling the age structure of the Patagonian ... toothfish stock around the Falkland Islands, we used otoliths to estimate the age of a sample of 1893 ... crenellations. Two readers undertook one reading each of the sections, estimating age using criteria agreed at ... reference ages. However, the second trainee reader consistently over-estimated the age of younger fish, and ...
Meeting Document : WG-FSA-02/74 : Автор(ы): J. Ashford, A. Arkhipkin, C. Jones and S. Bobko
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Green krill, the indicator of micro- and nano-size phytoplankton availability to krill
Abstract: Size fractionated chlorophyll-a concentrations of surface seawater was measured (pico ... -, nano-, and micro-size fractions) during commercial krill operations in the waters north of the South ... Shetland Islands from late December, 1991 to mid-February, 1992. The proportion of green krill had ... the importance of micro- and nano-size phytoplanktons in terms of food source for the Antarctic krill ...
Meeting Document : WG-EMM-98/29 : Автор(ы): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
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