Resultados de la búsqueda
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Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)
Abstract: No reliable measures of age currently exist in the Antarctic krill, Euphausia superba ... , each zone consisting of one light and one dark section. The width of the longitudinal sections ... zones. There were positive relationships between the number of zones and the maturity stage, and between ... the number of zones and body length. Further knowledge about molting process in the Antarctic krill ...
Meeting Document : WG-EMM-16/P02 : Autor(es): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt
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Results of the fifth Ross Sea shelf survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, February 2016, and notification for continuation in 2017
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... results of the fifth survey in the time series. The objectives of this survey were: (1) to continue a time ... series of longline surveys to monitor sub-adult (≤ 110 cm TL) toothfish in the south of SSRUs 881.J and ... situated in SSRU 881.M) of importance to predators: McMurdo Sound in 2016 and Terra Nova Bay in 2017. The ...
Meeting Document : WG-SAM-16/14 : Autor(es): A. Dunn, C. Jones, S. Mormede and S. Parker
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Preliminary assessment of Patagonian toothfish, Dissostichus eleginoides, in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in May–June 2006 using the Generalised Yield Model
short-term annual yield in the 2006/2007 CCAMLR season. This paper provides a preliminary assessment of ... Abstract: A survey of Patagonian toothfish, Dissostichus eleginoides, was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in May-June 2006 to provide the information for an assessment of ... yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. It also ...
Meeting Document : WG-FSA-06/45 Rev. 1 : Autor(es): D.C. Welsford, A.J. Constable, T. Lamb and T. Robertson (Australia)
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Aspects of the ecology of the bigeye grenadier at South Georgia
Abstract: Aspects of the ecology of the Bigeye grenadier, Macrourus holotrachys caught as bycatch ... estimates suggest that M. holotrachys is a long lived and moderately slow growing species, reaching ages of ... over 30 years and attaining lengths in excess of 80cm (Lt). Von Bertalanffy growth parameters were ... estimated for females and closely matched those of the congeneic species M. berglax from the Northern ...
Meeting Document : WG-FSA-03/16 : Autor(es): S.A. Morley, T. Mulvey, J. Dickson and M. Belchier (United Kingdom)
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BOOK REVIEW: WHALES OF THE SOUTHERN HEMISPHERE: BIOLOGY, WHALING, AND PERSPECTIVES OF POPULATION RECOVERY by Y. A. Mikhalev
Abstract: Examined the distribution and migration patterns of whales in the Southern Hemisphere ... . The presence of a new species of killer whale in the Antarctic, Orcinus nana, is shown. The impacts of ... extermination of whales in the Antarctic ecosystem are examined. Regions are defined which could be used as ... testing areas for whale survey methods. Author(s): Delegation of Ukraine Title: BOOK REVIEW: WHALES OF ...
Meeting Document : WG-FSA-09/11 : Autor(es): Delegation of Ukraine
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EFFECT OF STERN-SETTING TUNNEL ON THE SINK RATE OF INTEGRATED WEIGHT LONGLINE (IWL)
Abstract: This paper describes a new vessel modification to allow setting of longlines via a ... rate of demersal integrated weight longline (IWL). The stern setting tunnel consists of an elongated ... line exits the baiting machine, which is positioned in the aft section of the stern setting deck, to ... the exit point at the water line on the vessel's transom. The exit point of the tube is ...
Meeting Document : WG-FSA-08/38 : Autor(es): I. Hay and G. Robertson (Australia)
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INTERACTIONS OF PATAGONIAN TOOTHFISH FISHERIES WITH KILLER AND SPERM WHALES IN CROZET EXCLUSIVE ECONOMIC ZONE: AN ASSESSMENT OF DEPREDATION LEVELS AND INSIGHTS ON POSSIBLE MITIGATION SOLUTIONS
longline fishery is exposed to high levels of depredation by killer and sperm whales. In this context, this ... study (i) provides estimations of annual depredation levels on a 5-years period (2003-2008), (ii ... observed on respectively 32.6%, 18.6% and 23.4% of the 4289 lines hauled out over this period. Over this 5 ... year period we estimated a total loss of 1200 tons of Patagonian toothfish due to depredation which ...
Meeting Document : WG-IMAF-09/12 : Autor(es): P. Tixier, N. Gasco, G. Duhamel and C. Guinet (France)
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ASPECTS OF POPULATION STRUCTURE, DYNAMICS, AND DEMOGRAPHY OF RELEVANCE TO ABUNDANCE ESTIMATION: ADÉLIE PENGUINS
breeding sites during the breeding season. The objective of this paper is to identify and describe the ... Abstract: Counts of Adélie penguin populations are most conveniently and most often undertaken at ... aspects of Adélie penguin population structure, dynamics and demography that are relevant to the ... interpretation of counts made at breeding sites and the estimation of overall population abundance derived from ...
Meeting Document : WG-EMM-PSW-08/09 : Autor(es): L. Emmerson and C. Southwell (Australia)
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Horizontal flux of secondary production in the southern ocean food web: current velocity data and the transport of krill in the South Georgia ecosystem
Abstract: The transport of secondary production in the Southern Ocean food-web was investigated ... using a combination of physical model data and ship based biological data. The physical current velocity ... dataset was from FRAM and was used to derive a mean velocity field for the upper 250m of the water column ... . These have been combined with estimates of krill density and standing stocks to consider the flux of ...
Meeting Document : WG-EMM-97/65 : Autor(es): Everson, I.E., Trathan, P.N., Murphy, E.J.
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Distribution and abundance of krill in the vicinity of Elephant Island in the 1992 austral summer
in the vicinity of Elephant Island, Antarctica, from mid-January to mid-March, 1992. The first and ... surveys covered a 60 by 35 n.mi. area immediately north of Elephant Island. During the first survey, krill ... were distributed in a wide band extending along the north side of Elephant Island and wrapping around ... highest densities of krill were over the shelf extending to the northwest from Elephant Island and ...
Meeting Document : WG-CEMP-92/15 : Autor(es): R.P. Hewitt and D.A. Demer (USA)