Search results
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Analysis of dietary overlap in Antarctic fish (Notothenioidei) from the South Shetland Islands: no evidence of food competition
fish assemblages at the South Shetland Island area. Using tyler’s (1972) method, the reoccurrence ... of main and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25 ... assemblages at the South Shetland Island area. Using tyler’s (1972) method, the reoccurrence of main ... and secondary prey among fish predators was 33% in summer and 37% over the year at Potter Cove; 25% in summer ...
Meeting Document : WG-FSA-03/13 : Author(s): E. Barrera-Oro (Argentina)
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Conditions for the precise measurement of fish target strength in situ
one large same fish school in the eastern shelf of Bering sea during the intership calibration between ... one large same fish school in the eastern shelf of Bering sea during the intership calibration between ...
Meeting Document : WG-Krill-94/35 : Author(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)
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Counts of surface-nesting seabirds at Marion Island in 2003/04
, eastern rockhopper penguins E. chrysocome filholi and Crozet shags Phalacrocorax [atriceps] melanogenis ... Numbers of gentoo penguins Pygoscelis papua, macaroni penguins Eudyptes chrysolophus, eastern ...
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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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN SUBAREA 88.2 SSRU E FOR THE YEARS 2002/03 TO 2008/09
from different years. The use of the selected trips with the revised maturity ogive resulted ... -at-age and tag-recapture data from New Zealand vessels and for selected trips. The New Zealand vessels ... initial biomass was very imprecise. The selected trips data set resulted in a more precise estimate ... from different years. Monte-Carlo Markov Chain (MCMC) diagnostics suggested no evidence of non ...
Meeting Document : WG-FSA-09/41 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Milk consumption and growth efficiency in Antarctic fur seal (Arctocephalus gazella) pups
the sexes in any year. Both per-bout and per-day milk consumption increased steadily with age before ... related to the duration of the maternal foraging trip and attendance cycle, and both per-bout and per-day ... the sexes in any year. Both per-bout and per-day milk consumption increased steadily with age before ... related to the duration of the maternal foraging trip and attendance cycle, and both per-bout and per-day ...
Meeting Document : WG-EMM-97/11 : Author(s): Socha, D.G., Arnould, J.P.Y., Boyd, I.L.
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Seabird by-catch by tuna longline fisheries off southern Africa, 1998–2000
for the continental South African Exclusive Economic Zone (EEZ). Fishery observers accompanied 13 fishing trips ... (1% effort observed) had a higher bycatch rate (2.6 birds per 1 000 hooks, range per trip 0.1–5.4) than South ... South African Exclusive Economic Zone (EEZ). Fishery observers accompanied 13 fishing trips and observed ... observed) had a higher bycatch rate (2.6 birds per 1 000 hooks, range per trip 0.1–5.4) than South African ...
Meeting Document : WG-FSA-01/28 : Author(s): P.G. Ryan, D.G. Keith and M. Kroese (South Africa)
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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA FOR THE YEARS 1997–98 TO 2008–09
using the selected trips tag data and the revised maturity ogive gave a similar, but slightly lower ... the second use the selected trips data set with the 2007 maturity ogive. Overall, model fits to the data were ... FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA FOR THE YEARS 1997–98 TO 2008–09 Approval ... using the selected trips tag data and the revised maturity ogive gave a similar, but slightly lower ...
Meeting Document : WG-FSA-09/40 Rev. 1 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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The effect of different methodologies used in penguin diet studies at three US AMLR predator research sites: Admiralty Bay, Palmer Station and Cape Shirreff
, are hypothesized to influence variability in related parameters such as breeding success, foraging trip durations ... to influence variability in related parameters such as breeding success, foraging trip durations and chick ...
Meeting Document : WG-EMM-99/46 : Author(s): W. Trivelpiece, S. Trivelpiece (USA) and K. Salwicka (Poland)
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Assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990-2014
at the estimates of OB_1b model, use of knife edge selectivity at fixed 8 year for disease mortality assuming IUU ... of OB_1b model (OB_1b_noage model). The fits to CPUE in 2008 and MPD profiles for tags in the same year ... edge selectivity at 8 year for disease mortality in OB_2b model did not reduce the total objective ... 58.4.4bC) for the years 1990-2014 Approval: Approved Secretariat Workflow Status: Content Approved ...
Meeting Document : WG-SAM-15/25 : Author(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, in late summer of years 1994–97, Dr E. Holmberg surveys
in late summer of years 1994-97 was analysed using frequency of occurrence (F%) and coefficient " ... such as mysids and Thysanoessa sp., which are known as important alternative food in years of krill scarcity ... in the area of investigation didn't show a consistent pattern from year to year. Likewise, in the four ... in the Statistical Subarea 48.3 in the period investigated can be defined as low in 1944, equivalent to those years ...
Meeting Document : WG-FSA-97/48 : Author(s): Barrera-Oro, E., Marschoff, E., Casaux, R.