Search results
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Peculiarities of icefish Champsocephalus gunnari (Channichthyidae) distribution in South Georgia area during the surveys made by STM Atlantida in 2000 and 2002
in the northwest shelf area in 10-100m layer resulted in formation of adult fish aggregations in water column ... the bottom even in dark hours of the day. During the two surveys, fry and immature fish occurred in numbers ... in pelagic zone. At present, the population mainly consists of immature and first maturing fish, which stay ... , consequently, is disregarded when estimating the TAC. Diverse size groups, mainly juvenile and immature fish ...
Meeting Document : WG-FSA-03/55 : Author(s): Zh.A. Frolkina, S.M. Kasatkina and N.N. Zhigalova (Russia)
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GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH
by 2+ and 3+ fish, with differences in the size between Shag Rocks and South Georgia and with few small fish ... the 1+ fish produced yield of 3445 tonnes in Year 1 (2008/09) and 2318 tonnes in Year 2 (2009/10). In Scenario ... 2, in which the 1+ fish were excluded and biomass adjusted accordingly, yields were 3372 and 2248 tonnes ... . There was evidence that the September 2007 survey under sampled the 2+ fish, meaning that September is not an ideal ...
Meeting Document : WG-FSA-08/28 : Author(s): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)
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Revised reports on abundance and biological information on toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2011/12
to May 19, 2012. Total catch (excluding tagged and released fish) of Dissostichus eleginoides was 28.3 ... , respectively. Fish with good physical condition and single-hooked contributed 50 % to the total among fish ... caught by Spanish line system, while this kind of fish contributed 14 % to the total among fish caught ... , 2012. Total catch (excluding tagged and released fish) of Dissostichus eleginoides was 28.3 tonnes ...
Meeting Document : WG-FSA-12/57 : Author(s): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)
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Investigating emigration in stock assessment models of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H
in the recaptures of tagged fish seen in the SSRU 88.2H fishery. The patterns showed a sharp decay rate of a cohort ... of tagged fish with few being recaptured after more than 3 years at liberty, a steepening of the decay rate ... over time, and a trend for increasing proportions of tagged fish caught over time. To help understand ... in the recapture rates of a cohort of tagged fish through time cannot be explained solely by emigration (a process ...
Meeting Document : WG-FSA-14/56 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)
that M was between 0.22 and 0.38. The CCAMLR Working Group on Fish Stock Assessment later adopted 0.35 as the value ... methods. Therefore in 1989 the CCAMLR Working Group on Fish Stock Assessment used M=0.50 in its ... procedures. The basic algorithms are described below. (i) The Baranov Method (1914): When fishing ... Z=M and where Nil = catch of age group a which is fully represented in the catch; and Ell = fishing effort ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Author(s): Frolkina, G.A. and R.S. Dorovskikh
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WG-FSA-85
Full Name: Ad hoc Working Group on Fish Stock Assessment Location: Hobart, Australia Date ... documents Doc Number Title WG-FSA-85/01 Draft Agenda Fish Stock Assessment Working Group 23–30 August, 1985 ... WG-FSA-85/02 Note on Available Data and Programs for Fish Stock Assessment Secretariat WG-FSA-85/03 ... Fischer 1885 in January/February 1985 K.-H. Kock (FRG) WG-FSA-85/04 Estimates of Fish Stock Biomass around ...
Meeting
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Pilot study using electronic satellite tags to determine movements of Antarctic toothfish in the Ross Sea region
along the Ross Sea continental slope in January 2012. They will be programmed to pop-off the fish, float ... for members to distribute to vessels, crew and observers given the chance that these fish may be encountered ... in the fishery. The announcement details what to do if a satellite tagged fish is encountered, and who should ... Sea continental slope in January 2012. They will be programmed to pop-off the fish, float ...
Meeting Document : WG-FSA-11/49 : Author(s): S. Parker (New Zealand)
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Comparative study of the size composition of catches of D. eleginoides taken during the 25th expedition of the RV Akademic Knipovich in January 1990 (Subarea 48.3)
toothfish consisted of juveniles 21–37 cm in length, immature fishes 41–78 cm in length and mature fishes 80 ... of fish taken from different parts of the South Georgia shelf and the Shag Rocks shelf. Author(s): VNIRO ... toothfish consisted of juveniles 21–37 cm in length, immature fishes 41–78 cm in length and mature fishes 80 ... of fish taken from different parts of the South Georgia shelf and the Shag Rocks shelf. ...
Meeting Document : WG-FSA-97/12 : Author(s): VNIRO (Russia)
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Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg 1905) from the South Georgia Island shelf
on length frequency distribution of fish in catches simultaneously with otolith radii of fish taken ... of fish longer than 30 cm having an enlarged otolith centre. An age/length key for the third quarter ... Georgia shelf were determined by analyzing data on length frequency distribution of fish in catches ... simultaneously with otolith radii of fish taken in the period July to September. The latter was done using ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 37–49 : Author(s): Frolkina, Zh.A.
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Observer sampling requirements for Dissostichus spp.
in addition to the sample number in the table. Sample numbers in the table below indicate sampling of all fish ... changes, the sampling rate should be up to 7 fish per 1 000 hooks. As a practical procedure to achieve ... the desired samples, observers should sample up to 10 fish per line for Type III (which includes all type II ... data plus 10 otoliths), then up to 25 fish per line for Type II, to an overall total of 35 fish per ...
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