Resultados de la búsqueda
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Dietary composition of juvenile Dissostichus eleginoides (Pisces, Nototheniidae) around Shag Rocks and South Georgia, Antarctica.
Abstract: A diet analysis of the Patagonian toothfish Dissostichus eleginoides, trawled in the ... South Georgia Islands area in March–April 1996, was carried out by frequency of occurrence (F%) and ... coefficient ‘‘Q’’ (%) methods. The samples consisted chiefly of immature specimens, with predominant length ... ranges of 30–70 cm (TL). Fish was by far the main food on the shelves of Shag Rocks and South Georgia ...
Meeting Document : WG-FSA-05/P6 : Autor(es): Casaux, R., Barrera-Oro, E.R., Marschoff, E.R.
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Alternative method of parameters accuracy calculation in CMIX procedure applied to toothfish recruitment estimation
Abstract: The paper presents the application of the bootstrap method to estimate accuracy of ... component densities but another parameters: mean length of components, their standard deviations or equation ... recruitment calculations in S. Georgia area. The accuracy of mean length of component is high (CV~0.04), but ... total densities have CV~0.3 – 0.5. CV of parameters of linear equation is more then 1.0. It was marked ...
Meeting Document : WG-FSA-04/69 : Autor(es): P.S. Gasyukov (Russia)
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The survivorship of rays discarded from the South Georgia longline fishery
throughout the months of May and June, during 2003 toothfish fishing season in Subarea 48.3. From these ... results we can conclude that depth has a significant influence on the mortality of skate, with a predicted ... mortality of 0% for skate caught in waters of less than 1100m. A predicted mortality of 65% for skate caught ... in waters between, 1400 to 1600m and a mortality of 100% for skate caught at 2000m. We recommend from ...
Meeting Document : WG-FSA-03/57 : Autor(es): M. Endicott and D.J. Agnew (United Kingdom)
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Quantifying habitat use in satellite-tracked pelagic seabirds: application of kernel estimation to albatross locations
Abstract: We develop a new approach to quantifying habitat use within the foraging ranges of ... satellite-tracked seabirds. We applied kernel estimation techniques to 167 days (3738 locations) of data ... -rearing period of the breeding cycle at South Georgia. At this time the activity range of these two ... contrast, kernel estimation reveals that the main foraging areas of these two sympatric, congeneric species ...
Meeting Document : WG-EMM-01/67 : Autor(es): A.G. Wood (United Kingdom), B. Naef-Daenzer (Switzerland), P.A. Prince and J.P. Croxall (United Kingdom)
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Longline sink rates of an autoline vessel, and notes on seabird interactions
Abstract: A series of longline sink-rate trials were conducted with and without weights, from an ... , and the design was refined during the voyage. The aerial section of the tori line appeared to provide ... an effective deterrent to most seabirds. Statistical analyses of the data from the line sink rate ... of the attached weights. Data on line sink rate and tori line coverage suggest that quicker line sink ...
Meeting Document : WG-FSA-01/44 : Autor(es): N.W.McL. Smith (New Zealand)
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Summary of monitoring and research activities at Svarthamaren, Dronning Maud Land
of the population monitoring show that the number of pairs with chick or egg varied between 55,387 ... -178,240 (mean 119,000). Assuming that about 10 % of the colony is situated in inaccessible parts outside ... the area covered by the monitoring system the mean number of pairs producing a chick each year is ... about 132,000. On average 52% of the reproductive fraction of the population breeds each year indicating ...
Meeting Document : WG-EMM-97/78 : Autor(es): Lorentsen, S., Tveraa, T., Røv, N.
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An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island
Abstract: Assessments of the abundance and potential yield of mackerel icefish (Champsocephalus ... gunnari) populations at Heard Island are developed from the results of four scientific surveys conducted ... in 1990, 1992, 1993 and 1997. The assessments include estimates of all the parameters required, based ... of maturity and a weight length relationship. The results show that characteristics of icefish ...
Meeting Document : WG-FSA-97/29 : Autor(es): de la Mare, W.K., Constable, A., Williams, R.
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Preliminary model of krill fishery behaviour in Subarea 48.1
Abstract: A simple deterministic model is described which models the behaviour of the krill ... fishery in Subarea 48.1 and estimates the effort applied and the catch of krill in fine-scale squares ... . The distribution of catches predicted by the model, which is restricted to the months December to ... March, compare favourably with the general distribution of catches in Subarea 48.1. A number of ...
Meeting Document : WG-KRILL-93/14 : Autor(es): D.J. Agnew (Secretariat)
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Some aspects of the by-catch fish spawning and oogenesis
Abstract: On the basis of the biological material collected on some by-catch fishes during ... Antarctic toothfish fishery from 2002 till 2008 in different areas of the Southern Ocean (Collaboration Sea ... , D'Urville, Ross and.mundsen Seas) it was established that spawning of C. dewitti and species X ... continental shelf at depth of 300-600 m during summer season (may be autumn for sp. X) of the southern ...
Meeting Document : WG-FSA-10/51 : Autor(es): V. Prutko (Ukraine) and D. Chmilevsky (Russia)
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Design of the used on Russian vessels Sparta and Chio Maru No. 3 bottom trot-line for toothfish fishing
Abstract: This work is prepared in accordance with recommendation of 4.18 WG-SAM-12 about ... submitting of data on fishing gears` construction that was used on Russian longliners Sparta” and “Chio Maru ... №3”. The trotline of a special design that was used is formed of main floating line and fastened ... catching of VME-organisms to a large extent, because at the presented design of a longline each line with a ...
Meeting Document : WG-FSA-12/22 : Autor(es): I.G. Istomin, V.V. Akishin, V.A. Tatarnikov and I.I. Gordeev (Russia)