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On the problem of fish tagging
Abstract: Data on bottom trawl catch of tagged fish are presented as well as results of tagging ... of some Antarctic fish in Subarea 88.1. Use of marked trawl hooks as an additional method of fish ... tagging is proposed for discussion. Author(s): V.G. Prutko (Ukraine) Title: On the problem of fish ...
Meeting Document : WG-FSA-03/50 : Автор(ы): V.G. Prutko (Ukraine)
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A REVIEW OF THE UNCERTAINTIES ASSOCIATED WITH PENGUIN POPULATION AND ABUNDANCE ESTIMATES FOR THE CCAMLR REGION
Abstract: This report reviews the availability of data describing penguin abundance in the CCAMLR ... Convention area, and the uncertainties in deriving overall abundance estimates from these counts. Counts of ... breeding colonies are available from a variety of sources and, when combined, coverage is thought to be ... been collected using various demographic units, and the timing of these have varied relative to ...
Meeting Document : CCAMLR-IWC-WS-08/08 : Автор(ы): Trivelpiece, W., Fraser, B., Trathan, P., Ainley, D., Southwell, C., Bost, C., Hindell, M., Lyver, P., Ratcliffe, N., Woehler, E.
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Effects of sea-ice extent and krill or salp dominance on the Antarctic food web
important during spring and summer through the formation of extensive and dense blooms. Although salps are ... reproduction and survival of krill larvae. Here we provide data from 1995 and 1996 that support hypothesized ... proportion of net primary production, and found correlations between herbivore densities and integrated ... chlorophyll-a that indicate that there is a degree of competition between krill and salps. Our analysis of the ...
Meeting Document : WG-EMM-97/73 : Автор(ы): Hewitt, R., Trivelpiece, S., Fraser, W., Holm-Hansen, O., Siegel, V., Trivelpiece, W., Loeb, V.
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Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands in February 1997
Niitaka Maru were made from 1 to 23 February, 1997 to the north of the South Shetland Islands. Among 80 ... hauls examined, a total of 61 specimens belonging to 4 families and 7 species, Electrona antarctica (50 ... hauls. Except for one channichthyid juvenile of Neopagetopsis ionah, by-catch fishes were referred to ... , Electrona antarctica of the Myctophidae was the most abundant. This species was found in 12 hauls, and its ...
Meeting Document : WG-EMM-97/72 : Автор(ы): Iwami, T., Ichii, T., Naganobu, M., Kawaguchi, S.
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On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model
growth rates, thus solving problems of lack of self-sustainability encountered in earlier model analyses ... split of the overall density dependence effect between the first year and following sub-adult years of ... life. Since evaluations of the level of resilience of a predator to krill fishing depend on the values ... annual population growth rate of 10%. Author(s): Butterworth, D.S., Thomson, R.B. Title: On the ...
Meeting Document : WG-EMM-95/39 : Автор(ы): Butterworth, D.S., Thomson, R.B.
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Dense populations of the Antarctic scallop (Adamussium colbecki) in Terra Nova Bay (Subarea 88.1J): potential VMEs adjacent to the Terra Nova Bay ASPA (No. 161)
Abstract: Benthic communities of the Terra Nova Bay area (Ross Sea) close to the Italian station ... Mario Zucchelli is located, have been largely investigated in the last couple of decades. All the ... acquired knowledge supports the presence of very rich and diversified communities. This has led to the ... establishment of an ASPA (N° 161). The Antarctic scallop, Adamussium colbecki (Smith, 1902), is one of the most ...
Meeting Document : WG-EMM-12/23 : Автор(ы): M. Chiantore and M. Vacchi (Italy)
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Review of fishery monitoring and forecast procedures
Abstract: The Secretariat monitors the catches of all target and by-catch species (or species ... closed 68 fishing areas, and the total catches of Dissostichus in areas closed using the forecast model ... averaged 98.5% of the relevant catch limits. The forecast model relies on the assumption that the fishery ... the prediction. Using this prediction approach assumes that there will be underruns and overruns of ...
Meeting Document : WG-SAM-13/06 : Автор(ы): Secretariat
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Diet composition of Antarctic toothfish
determined. Sampling efforts were made during a longline survey of pre-recruit toothfish from commercial ... muscle tissue of Antarctic toothfish, bycatch specimen and icefish in the stomachs indicated a trophic ... connection between the toothfish and icefish. In this study, similarities in the δ13C values δ15N values of ... Antarctic toothfish indicate they occupy same trophic position irrespective of the area, body size, sex, and ...
Meeting Document : WG-FSA-16/06 : Автор(ы): Delegation of the Republic of Korea
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Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological investigations
, attained in the 1992/1993 season. The report presents an analysis of Polish krill catches in the 1991/1992 ... and 1992/1993 seasons. CPUEs by month in individual subareas of the Atlantic sector of the Antarctic ... were calculated. The results of biological investigations of krill on the fishing grounds of the South ... ) Title: Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological ...
Meeting Document : WG-Krill-94/09 : Автор(ы): J. Sosinski and Z. Cielniaszek (Poland)
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Indexing maturation of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region
and 88.2 have provided more than a decade of observations to aid in understanding the life history and ... ecology of toothfish. Updated spawning ogives for males and females support the currently used values ... . Using histological samples, a summer GSI threshold of 1% appears to be a good indicator of vitellogenic ... upcoming season. Observations of post-spawning fish on the slope indicate that some females either spawn on ...
Meeting Document : WG-FSA-12/40 : Автор(ы): S. Parker and P. Marriott (New Zealand)
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