Search results
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Counts of surface-nesting seabirds breeding at Prince Edward Island, summer 2001/02
Abstract: The first midsummer survey of surface-nesting seabirds at Prince Edward Island was ... concerns about the impacts of longline fishing mortality on various albatrosses and giant petrels, there ... was no evidence that populations of these species had decreased. Indeed, the estimate of wandering ... Marion Island as supporting the largest single-island populations of this species. Species that underwent ...
Meeting Document : WG-EMM-03/9 : Author(s): P.G. Ryan, J. Cooper, B.M. Dyer, L.G. Underhill,R.J.M. Crawford and M.N Bester (South Africa)
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Krill distribution patterns in the Atlantic sector of the Antarctic during the CCAMLR-2000 Survey
Abstract: The international CCAMLR Survey 2000 was conducted to support an updated estimate of ... the large scale krill biomass in the South Atlantic Sector of the Antarctic. Four vessels from Japan ... of acoustic targets. Analyses on the combined data sets from the net sampling program indicate that ... krill distribution showed three distinct geographical clusters of size frequency distributions. Small to ...
Meeting Document : WG-EMM-00/6 Rev. 1 : Author(s): V. Siegel (Germany), S. Kawaguchi (Japan), F. Litvinov (Russia), V. Loeb (USA) and J. Watkins (United Kingdom)
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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 : Author(s): 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 : Author(s): Iwami, T., Ichii, T., Naganobu, M., Kawaguchi, S.
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Preliminary results of a feeding trial on the blue-eyed shag Phalacrocorax atriceps
bransfieldensis during 45 days of the austral summer at Jubany Station, King George Island, South Shetland Islands ... improve the accuracy of weight estimations of fish ingested, calculated y means of equations based on ... otolith-lengths. The shag produced a total of 16 pellets, with a frequency of 1 every 2.5 days. It ... ingested willingly a mean ration equivalent to 31% of its mass, which is a higher energy requirement than ...
Meeting Document : WG-CEMP-94/29 : Author(s): R. Casaux, M. Favero, E. Barrera-Oro and P. Silva (Argentina)
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Age distribution of breeding female Antarctic fur seals in relation to changes in population growth rate
Abstract: The age distribution of breeding female Antarctic fur seals at Bird Island, South ... Georgia, in 1988 was compared with the age distribution of a sample obtained in 1971-1973. The mean age in ... ), which was significantly lower than in 1971-1973. Indicators of population size suggested that population ... -1972. Exponential models fitted to the frequency distribution of age-classes greater than age 5 years ...
Meeting Document : WG-CEMP-91/21 : Author(s): I.L. Boyd, N.J. Lunn, P. Rothery and J.P. Croxall (United Kingdom)
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.2
Abstract: The current season (2014/15) is the final one of the first three-season research which ... method using updated CCAMLR C2 data and reference area sizes. Understanding of the resource structure ... through clarification of their life history is essential to establish stock assessment and robust stock ... / fisheries management of Dissostichus spp. population(s) in data- poor exploratory fisheries. During the ...
Meeting Document : WG-FSA-15/18 : Author(s): Delegation of Japan
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Stock connectivity of Antarctic toothfish
, 48.4, 48.6, 88.1, 88.2 and 88.3, Divisions 58.4.1, 58.4.2 and 58.5.2, and the SPRFMO area north of ... toothfish samples were extracted and of these 547 were deemed to contain sufficient quantity and quality to ... be sequenced by Diversity Arrays to identify variable nucleotide SNPs sites. The analysis of SNPs ... indicated that the genetic structuring of Antarctic toothfish across the Southern Ocean is very weak. The ...
Meeting Document : WG-FSA-2019/P01 : Author(s): D. Maschette, S. Wotherspoon, A. Polanowski, B. Deagle, D. Welsford and P. Ziegler
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LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA
Abstract: This study uses a histological assessment of age and length at spawning for female and ... fishing seasons. The female spawning ogive incorporates the proportion of sexually mature fish that do not ... management decision rules. A characterisation of the oocyte developmental cycle of Antarctic toothfish shows ... vitellogenic phase over at least a 6–12 month period, resulting in a developed batch of oocytes accumulating at ...
Meeting Document : WG-FSA-09/37 : Author(s): S.J. Parker and P.J. Grimes (New Zealand)
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THE USE OF TRADE RELATED MEASURES IN FISHERIES MANAGEMENT
Abstract: The use of trade-related measures, including catch and/or trade documentation schemes ... and the imposition of trade sanctions on vessels or Flag States failing to comply with the ... conservation and management measures of RFBs, has increased noticeably over the last decade. Experience has ... join RFBs and/or to co-operate in the implementation of the conservation and management measures of ...
Meeting Document : CCAMLR-XXVII/BG/37 : Author(s): Submitted by IUCN