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Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia
Paper Title: Comparison of age readings from scales and otoliths of the Patagonian toothfish ... compared for 105 specimens of the Patagonian toothfish (Dissostichus eleginoides) from the South Georgia ... region (Subarea 48.3). In 44% of specimens, age readings from both structures were identical. A Wilcoxon ... test for paired data (Ts = 0.256, n = 59) conducted on the remaining 56% showed that differences in age ... Rubilar (1992), variations in parameters of the von Bertalanffy growth equation, mainly K and L,, are ... potential causes of error in estimates of mortality rates. They concluded that the highest priority for ... research in D. eleginoides should be the validation of age and growth data from scale readings using ... about seven years, followed by a period when an increase in thickness is the main result of growth ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Autor(es): Cassia, M.C
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PRELIMINARY PROPOSAL FOR MARINE SPATIAL PROTECTION AROUND THE SOUTH ORKNEY ISLANDS
PRELIMINARY PROPOSAL FOR MARINE SPATIAL PROTECTION AROUND THE SOUTH ORKNEY ISLANDS ...
Meeting Document : SC-CAMLR-XXVIII/14 : Autor(es): Delegation of the United Kingdom
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
– Antarctic Peninsula region Abstract / Description: Expansion of the krill fishery in the Scotia Sea ... Paper Title: A compilation of parameters for ecosystem dynamics models of the Scotia Sea ... assessment of methods for subdividing the precautionary catch limit amongst smaller spatial units. This paper ... compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods. These ... whales and fi sh. This combination is intended to represent current interest in the conservation of ... given in Tables 3 and 4. Krill mean mass The mean body mass of individual krill caught in nets ... mean mass multiplied by proportion of annual de- mand consumed in the relevant season. Perciform fi sh ... gentoos were calculated as the averages across sexes of the mean, minimum and maximum quoted in Williams ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Autor(es): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
Paper Title: A generalised model for evaluating yield and the long-term status of fish stocks ... projection model for assessing the long-term annual yield which satisfies objectives for the maintenance of ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... period and set a further constraint on the long-term status of the stock relative to the pre-exploitation ... mean 2 and variance G ~ . In the simplest case, recruitment is considered to be independent of ... the reproductive performance of the stock was not jeopardised (SC-CAMLR, 1987). In addition, this ... Antarctic marine living resources in terms of their abundance relative to the pre-exploitation abundance ... up the number of fish in each age class at the start of the simulation period. Each age class is ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Autor(es): Constable, A. and W.K. de la Mare
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Analysis of sea-ice concentration of 48.6_4 and _5 with remote sensing data during the latest four seasons
to enter the block, thus she left for the northern part of Subarea 48.6 in February 8th. However, the ... sea-ice disappeared in the eastern part of the block in February 21st after she left. The sea-ice was ... becoming thick around whole block in March 11th, but disappeared in the eastern part of the block again in ... the opportunity to go into the block even though there were apparently free of ice for some part in ...
Meeting Document : WG-SAM-16/42 Rev. 1 : Autor(es): T. Namba, K. Taki and T. Ichii
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Joint Polish/American hydroacoustic survey of Elephant Island and the vicinity of King George Island, 1988
in most areas covered by last year’s survey. The total biomass in the vicinity of Elephant Island was ... estimated from 120 kHz data to be 260k tonnes and that in the Bransfield Strait south of King George Island ... was 39k tonnes for a total of 299k tonnes in the combined areas. The estimated 200 kHz survey data ... area north of King George Island and 309k tonnes (in 8 836 n m 2) in the expanded area around Elephant ... ; T is echo integrator deflection for 1 n mile segment (in n miles). The mean abundance of krill per ... - 95.7 (db) 1.2 where L is the length of krill in mm. Mean surface density or abundance (tonnes/nm2 ... abundance of biomass; w is the mean weight of krill (in g) and is mean density of krill from 1.1 above mean ... in the vicinity of Elephant Island was estimated from 120 kHz data to be 260k tonnes and that in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 357–377 : Autor(es): Macaulay, M.C.
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Seguimiento de la captura y el esfuerzo
La notificación diaria de datos diarios de captura y esfuerzo se hace de conformidad con la Conservation Measure ... por períodos de 5 días se hace de conformidad con la Conservation Measure 23-01 y es obligatoria ... con la Conservation Measure 24-01. Notificación de los datos de captura y esfuerzo por períodos de 10 días ... con la Conservation Measure 41-08 y la Conservation Measure 42-02 para las pesquerías establecidas de la División ...
Page : Site Section: Fisheries
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Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G
fish have been recaptured. It is likely that the lack of recaptures of tagged fish in this region has ... effort. By drawing on the success of tagging programmes in other CCAMLR fisheries, we develop an approach ... these fishing grounds as a condition of fishing in the slope region (SSRUs 88.2C–G). This condition ... least 3 tags per tonne in the short term. In addition to improving estimates of abundance a higher ...
Meeting Document : WG-FSA-14/59 : Autor(es): S.M. Hanchet and S.J. Parker (New Zealand)
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A comparison of acoustic targets at South Georgia and the South Orkney Islands during a season of profound krill scarcity
Abstract: Dual frequency (38 and 120 kHz) acoustic surveys of shelf-break regions in the vicinity ... of Willis Islands, South Georgia and Coronation Island, South Orkneys, both in the Atlantic sector of ... signals. The water column in the vicinity of Willis Islands was characterised by a series of diffuse but ... approximate six-fold difference in mean krill abundance was detected between the two areas, but in comparison ...
Meeting Document : WG-EMM-95/75 : Autor(es): Watkins, J.L., Brierley, A.S.
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COMPARATIVE CHARACTERISTICS OF PATAGONIAN (DISSOSTICHUS ELEGINOIDES) AND ANTARCTIC (D. MAWSONI NORMAN) TOOTHFISH INHABITING DIFFERENT SECTORS OF THE SOUTHERN OCEAN
of these parameters revealed essential differences in food spectra both at the first pelagic stage of ... larger on the average than in the area of Kerguelen Archipelago (58.5.1.) (Posters 1 and 2). In turn ... , Antarctic toothfish individuals in the seas of Indian Sector (58.4) are larger than in the Pacific Ross Sea ... shelf and slope of continental seas in the Indian Sector of Antarctica. Author(s): K.V. Shust, I.P ...
Meeting Document : WG-FSA-09/24 : Autor(es): K.V. Shust, I.P. Zarikhin, I.G. Istomin, A.F. Petrov, V.A. Tatarnikov and N.S. Demina (Russia)