Resultados de la búsqueda
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Sensitivities in the assessment of the Patagonian toothfish (D. eleginoides) in Subareas 48.3 and 48.4 to truncation of tagging data
Abstract: The assessment of toothfish in CCAMLR subarea 48.3 currently uses the first four years ... of tag recaptures post release as input data, whereas the assessment in subarea 48.4 uses all ... available recapture data (excluding in-year recaptures). A theoretical analysis of the use of data from ... double-tagged recaptures suggests that including recaptures from fish at liberty for long periods will ...
Meeting Document : WG-SAM-17/35 : Autor(es): T. Earl
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THE HISTOLOGICAL ANALYSIS OF OOGENESIS AND MATURITY OF ANTARCTIC TOOTHFISH FROM THE ROSS SEA
toothfish oogenesis have been determined. At the maturing of toothfish, ovaries from the stages III to IV ... Abstract: The results of the histological analysis of the Antarctic toothfish (Dissostichus ... morphological parameters, indices of gonads and condition by Fulton have been described. The histological ... criteria of the assessment of the ovary maturity stages, cytological parameters of oocytes and type of the ...
Meeting Document : WG-FSA-09/26 : Autor(es): S.V. Piyanova and A.F. Petrov (Russia)
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The effect of abiotic factors on the reproduction of seabirds on the Argentine Islands
Abstract: The research was conducted during the summer season from 12.13.2011 to 02.09.2012 at ... the Ukrainian Antarctic station "Academik Vernadsky". The most numerous breeding colony of ... among the newborn penguins on the Galindez Is caused by starvation. The number of residential nests ... decreased almost three times. Underwater surveys conducted by us in this period in the area of Galindez Is ...
Meeting Document : WG-EMM-16/59 : Autor(es): І.V. Dykyy
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By-catch of juvenile Champsocephalus gunnari in krill fishery on the shelf of South Georgia Island
depth with a maximum density observed at depth between 100 and 200 m. High catches of C. gunnari ... Abstract: AtlantNIRO had conducted in 1982-1990 a series of juvenile fish trawl surveys of ... abundant species around South Georgia Is. Results of these survey were summarised and compared with ... published data. Juveniles of Champsocephalus gunnari were found to be distributed from the surface to 500 m ...
Meeting Document : WG-FSA-92/06 : Autor(es): G.A. Frolkina, V.I. Latogursky, V.A. Sushin (Russian Federation)
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Can the length composition of krill in predator diets provide information on the age-dependence of krill natural mortality?
schedule of krill natural mortality at age. In principle, such a method would allow inferences about this ... of krill is split between predator species. This method uses data on the length distribution of krill ... predator abundance and food consumption studies. Some results of the method are put forward purely for ... illustrative purposes. Further discussions about the practicalities of obtaining reliable estimates of the ...
Meeting Document : WG-EMM-95/40 : Autor(es): Thomson, R.B., Butterworth, D.S.
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Estimation of the green weight of krill caught
directly estimate the green weight of krill caught (Conservation Measure 21-03, Annex B). This requirements ... was introduced for the 2012/13 seasons, and the estimation methods were revised at WG-EMM-13 and WG ... -EMM-14. Estimates of green weight and parameter values are reported in each vessel’s haul-by-haul ... of the green weight of krill caught: codend volume, holding tank volume, flow meter (method 2), flow ...
Meeting Document : WG-EMM-15/19 : Autor(es): CCAMLR Secretariat
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ASSESSMENT OF SPATIAL-TEMPORAL DYNAMICS OF STANDARDIZED CPUE FOR KRILL FISHERY IN THE AREA 48
contributing this variability at different degree of aggregated fishery statistics have been presented. In ... Abstract: The spatial-temporal dynamics of standardized abundance indices of krill in Area 48 ... yesteryear the authors revealed “diagnostics specificity” of GLMM tuning for CPUE standardization: many hauls ... normal distribution. In this study the approaches to improve the diagnostics of GLLM tuning by using ...
Meeting Document : WG-EMM-11/28 : Autor(es): S.M. Kasatkina and P.S. Gasyukov (Russia)
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CURRENT ABUNDANCE OF ADÉLIE PENGUIN BREEDING POPULATIONS ALONG THE KEMP AND MAC.ROBERTSON LAND COASTS, EAST ANTARCTICA: APPLICATION OF NEW SURVEY AND ESTIMATION METHODS FOR BROAD-SCALE POPULATION ASSESSMENT
Abstract: Application of new methods for estimating the abundance of breeding Adélie penguin ... populations along the Kemp and Mac.Robertson Land coasts of east Antarctica are described. Methods include use ... of sample survey designs, distance sampling to estimate detectability, virtual delineation of sample ... plot boundaries, cameras to collect adjustment data and adjustment of counts for detectability and ...
Meeting Document : WG-EMM-11/31 : Autor(es): C. Southwell, J. McKinlay, K. Newbery, L. Emmerson, M. Low, R. Pike, D. Wilson, D. Southwell and L. Einoder (Australia)
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Assessment of the status of the toothfish stock in Subarea 48.3
run to generate these levels of exploitable biomass at the start of 2004. This generated estimates of ... Abstract: We conducted several different assessments of toothfish in Subarea 48.3 using four ... apparently not sufficient to generate realistic estimates of current biomass using GYM. ASPM runs coded in AD ... loss rates and fishery age-based selectivity. Estimations based on local depletions of toothfish ...
Meeting Document : WG-FSA-04/82 : Autor(es): D.J. Agnew and G.P. Kirkwood (United Kingdom)
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A review of the Somniousus (sleeper shark) subgenus and a risk assessment of the sleeper shark by-catch caught in Australian sub-Antarctic fisheries
antarcticus is caught as by-catch in Australian subantarctic fisheries at Heard and McDonald Islands (Division ... monitoring of by-catch of this species is ongoing. Author(s): E.M. van Wijk, R. Williams and J.D. Stevens ... (Australia) Title: A review of the Somniousus (sleeper shark) subgenus and a risk assessment of the sleeper ...
Meeting Document : WG-FSA-03/69 : Autor(es): E.M. van Wijk, R. Williams and J.D. Stevens (Australia)