Resultados de la búsqueda
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Sexual dimorphism and sexual segregation in foraging strategies of northern giant petrels Macronectes halli during incubation
suggest that sexual segregation of foraging strategies arose from size-related dominance at carcasses ... Abstract: Giant petrels (Macronectes spp) are the most sexually dimorphic of all seabirds. We ... used satellite-tracking and mass change during incubation to investigate the influence of sexual size ... dimorphism, in terms of the intersexual food competition hypothesis, on foraging and fasting strategies of ...
Meeting Document : WG-FSA-99/38 : Autor(es): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)
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On the problem of icefish (Champsocephalus gunnari) vertical migration on the South Georgia shelf
the maximum catches were available at the middle of the light hours of the day. At twilight the fish ... Abstract: The results are presented of studying icefish vertical migration based on the data of R ... /V cruises during the seasons of 1982-83, 1983-84 and 1986-87, when this species was highly abundant ... on the South Georgia shelf. It is revealed that at day time the fish distributes near the bottom and ...
Meeting Document : WG-FSA-91/06 : Autor(es): J.A. Frolkina and V.I. Shlibanov (USSR)
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Spatio–temporal dynamics in maturation and spawning of Patagonian toothfish Dissostichus eleginoides on the subantarctic Kerguelen Plateau
histological analyses and calibration of macroscopic staging criteria. Dissostichus eleginoides at HIMI spawn ... along the west and south of the plateau around HIMI at depths of 1500–1900m. Comparison between ... both sexes. However, the magnitude of this temporal variation in age-at-maturity varied between gear ... Abstract: This study investigated maturation and spawning of Patagonian toothfish Dissostichus ...
Meeting Document : WG-FSA-17/P04 : Autor(es): P. Yates, P. Ziegler, D. Welsford, J. McIvor, B. Farmer and E.Woodcock
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Population structure of icefish (Champsocephalus gunnari) in the South Georgia area (Antarctic)
South Georgia and at Shag Rocks are different. The length-age structure of C.gunnari groupings ... inhabiting the areas at Shag Rocks and South Georgia is characterized with the lack of fish below 11 cm in ... assume the common origin of the western and Shag Rock groupings. C.gunnari of two-three years old (at the ... length of 22-23 cm) migrate from the South Georgia area and remain at Shag Rocks. Icefish reaching 40-43 ...
Meeting Document : WG-FSA-04/40 : Autor(es): Zh.A. Frolkina and I.A. Trunov (Russia)
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ANALYSIS OF VME DATA COLLECTED BY UK VESSELS FISHING IN THE ROSS SEA DURING THE 2008/09 CCAMLR SEASON
VME Indicator Units and CPUE (bits/1000 hooks), there were insufficient data at high levels of VME ... Abstract: Analysis of VME data collected in 2008/09 by UK vessels and national and international ... observers onboard was carried out to explore evidence of VMEs in the Ross Sea. 2008/09 data corroborated ... areas in 88.1I, E and F identified in our previous analysis of data collected by observers on UK vessels ...
Meeting Document : WS-VME-09/05 : Autor(es): Peatman, T., Mitchell, R.E., Pearce, J., Agnew, D.J.
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Patterns and processes in the distribution and dynamics of Antarctic krill
distribution and dynamics of Antarctic krill population at various spatial and temporal scales. We suggest that ... distribution patterns at various scales of observation to ascertain the plausibility of the model and identify ... Abstract: A general framework is presented to develop, test and integrate component models of the ... models of increasing complexity be developed iteratively for variability and patchiness of krill ...
Meeting Document : SC-CAMLR-VII/BG/20 : Autor(es): United States of America
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Geographic aspects of Euphausia superba resources exploitation
Abstract: Data on distribution and biomass of E.superba aggregations at Atlantic sector and near ... . Concentration of E.superba of the same order of biomass volume as in the Scotia Sea were observed at several ... offshore aggregations of E.superba will be connected with regular search activity prior as well as at the ... adjacent waters (subregions outside of the Scotia Sea are under pecular attention) are observed ...
Meeting Document : WG-KRILL-93/04 : Autor(es): R.R. Makarov (Russia)
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Geographic aspects of Euphausia superba resources exploitation
Abstract: Data on distribution and biomass of E.superba aggregations at Atlantic sector and near ... ° Concentration of E.superba of the same order of biomass volume as in the Scotia Sea were observed at several ... offshore aggregations of E.superba will be connected with regular search activity prior as well as at the ... adjacent waters (subregions outside of the Scotia Sea are under pecular attention) are observed ...
Meeting Document : WG-CEMP-92/31 : Autor(es): R.R. Makarov (Russian Federation)
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An acoustic survey of Antarctic krill on the South Georgia shelf, CCAMLR Subarea 48.3, in January 1992
operating at 38 kHz and 120 kHz. The results have been analysed for all straight sections of track when the ... , these are presented for day and for night sections of survey and at locations mapped around the island ... the opportunity was taken in 1992 to produce a krill biomass estimate as a by-product of a fish stock ... ship's speed exceeded 7 knots and when the ship was over the shelf around the main island of South ...
Meeting Document : WG-EMM-96/42 : Autor(es): Everson, I., Goss, C.
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Results of E.L. Holmberg 1997 fish survey in Subarea 48.3
, including Champsocephalus gunnari at the shelf of the South Georgia Islands. The age and size structure of ... Abstract: The survey comprised 51 bottom trawl hauls taken in subarea 48.3. Of these, one was ... discarded due to net damage. About 80% of the hauls were taken in the shelf of South Georgia Islands (41 ... ) and the remaining in the Shag Rocks area (9); 64% of the hauls were intended as replicates of the ...
Meeting Document : WG-FSA-97/47 : Autor(es): Prenski, B., Calcagno, J., Marschoff, E.R., Gonzalez, B.