WG-FSA-89/01
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Draft Agenda
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WG-FSA-89/02
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Annotated Draft Agenda
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WG-FSA-89/03
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List of Documents
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WG-FSA-89/04
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List of Participants
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WG-FSA-89/05
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Analyses Carried Out During the 1988 Meeting of the Fish Stock Assessment Working Group
Secretariat
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WG-FSA-89/06
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Report of the Joint UK/Polish Fish Stock Assessment Survey Around South Georgia, February 1989
G.B. Parkes, I. Everson (United Kingdom), J. Sosinski, Z. Cielniaszek and J. Szlakowski (Poland)
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WG-FSA-89/07
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Proposed Maturity Scale for Icefish (Channichthyidae)
Z. Cielniaszek (Poland) and G.B. Parkes (United Kingdom)
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WG-FSA-89/09
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Supplementary Data on Exploited Fish Stocks in Division 58.5.1 (Kerguelen)
G. Duhamel (France)
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WG-FSA-89/10
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Software for Fish Stock Assessment
Secretariat
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WG-FSA-89/11
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Summary of Length Composition Data Submitted Prior to 1988
Secretariat
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WG-FSA-89/12
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Availability of Catch and Biological Data
Secretariat
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WG-FSA-89/13
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A Comparison Between Age Determinations of the Antarctic Fish Notothenia gibberifrons Lönnberg Using Scales and Otoliths
R. Coggan (United Kingdom), K. Skora (Poland), A. Murray and M. White (United Kingdom)
Резюме:
Scales and otoliths were collected from 304 specimens of the Antarctic fish Notothenia gibberifrons. When interpreted separately, only 25% of scale and otolith readings agreed. When a scale and otolith from a single simultaneously, 75% of readings agreed. of otolith readings changed between specimen were interpreted 60% of scale readings and 30% separate and simultaneous interpretations. Read More
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Admin Admin (Секретариат АНТКОМ)
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WG-FSA-89/14
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Selectivity of Trawls with Reference to Icefish (Champsocephalus gunnari L.)
S.F. Efanov, G.E. Bidenko and V.A. Boronin (USSR)
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WG-FSA-89/15
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Hydrological Conditions and Peculiarities of Glassfish Distribution on the South Georgia Island Shelf in 1986 1987
V.N. Shnar and V.I. Shlibanov (USSR)
Резюме:
Some peculiarities of spatial and temporal variability of the glassfish distribution on the South Georgia Island shelf relative to environmental conditions have been revealed from summarizing and analysis of hydrographic and commercial fishery and biological data for 1986-1987.
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Admin Admin (Секретариат АНТКОМ)
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WG-FSA-89/16
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Growth and Age-length Structure of Grey Notothenia (Lepidonotothen squamifrons gunther) (Nototheniidae) Populations in Different areas of Indian Sector of Southern Ocean
A.K. Zaitsev (USSR)
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WG-FSA-89/17
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Natural Mortality of Grey Notothenia, Habitating Different Areas of Indian Sector of Southern Ocean
A.K. Zaitsev (USSR)
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WG-FSA-89/18
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Growth and Natural Mortality of Yellowfin Notothenia Patagonotothen guntheri shagensis from Shag Rocks Shelf
V.I. Shlibanov (USSR)
Резюме:
Regularities of growth are established from the data of age determinations and analysis of yellowfin notothenia length-weight composition, mathematical description of length-weight dependence and parameters of Bertalanffy equation are given. Natural mortality coefficient, M, calculated by six various methods ranged from 0.63 to 1.06. With mean value of M, age and length at optimum exploitation Read More
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WG-FSA-89/19
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On Ageing Technique for Icefish (champsocephalus gunnari Lönnberg 1905) from South Georgia Island Shelf
Zh.A. Frolkina (USSR)
Резюме:
Radii of annual elements were calculated on the basis of studying C. gunnari length frequency distribution simultaneously with the measuring of otolith radii of fish taken in July-September. This was done using specimens from strictly’ defined age groups. These radii measurements suggest an adjustment to age determination of fish longer than 30 cm with an enlarged otolith centre. An age-length Read More
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WG-FSA-89/20
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On Assessment of Bertalanffy Growth Equation Parameters and Instantaneous Natural Mortality Rate on South Georgia Icefish
Zh.A. Frolkina and R.S. Dorovskikh (USSR)
Резюме:
Analysis and summarizing extensive materials on size-weight and size-age composition of South Georgia icefish for 1965-1987 enabled producing reliable weight-length dependencies for males and females by season and specify Bertalanffy growth equation parameters. Mean value of natural mortality rate was estimated at 0.55.
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WG-FSA-89/21
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1989/90 Stock Status and TAC Assessment forPatagonotothen guntheri in South Georgia Subarea (48.3)
V.I. Shlibanov (USSR)
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WG-FSA-89/22 Rev. 1
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1989/90 Stock Status and TAC Assessment for Champsocephalus gunnari in South Georgia Subarea (48.3)
Zh. Frolkina and P. Gasiukov (USSR)
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WG-FSA-89/23
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Longline Data Recording Sheet
Secretariat
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WG-FSA-89/24
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Vacant
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WG-FSA-89/25
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Summary of Length Composition Data Applicable to 1987/88 (This is a copy of document WG-FSA-88/25)
Secretariat
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WG-FSA-89/26
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Summary of Length Composition Data Applicable to 1988/89
Secretariat
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WG-FSA-89/27
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Correction for Under-representation of 1 and 2 Year Old Champsocephalus gunnari in Bottom Trawl Surveys
J. Beddington and M. Basson (United Kingdom)
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WG-FSA-89/8 Rev. 1
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The Status of the Champsocephalus gunnari Stock in the South Georgia Area
M. Basson, J. Beddington (United Kingdom) and W. Ślósarczyk (Poland)
Резюме:
This study focuses on the Chamsocephahus gunnari stock around South Georgia. The principle aims are, first, to assess current and past biomass and recruitment levels and, second, to analyse the relationship between the spawning stock and number of recruits. A conventional VPA and an ad hoc tuning method are used to estimate biomass levels and fishing mortality for the period 1971/72 to 1988/89 Read More
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