Catch and length/age composition data for Notothenia squamifrons from Ob and Lena Banks, Division 58.4.4, are presented for the period from 1978 to 1990 split years. These data were used in VPA analyses made for each bank separately. The CCAMLR VPA program, version 4.1 was used. The resulted biomass estimates for 1990 are 10.2 x 103 tonnes for Ob Bank and 20.7 x 103 tonnes for Lena Bank. These estimates may be used in calculation of TAC which in accordance with our calculations should be 2.0 x 103 tonnes for Ob Bank and 4.0 x 103 tonnes for Lena Bank.
Abstract:
A total of 8 inventory trawling surveys of the bottom fish were made on South Georgia shelf. Ch.gunnari distribution pattern markedly varied by year which can be attributed to differing survey dates.
Most dense Ch.gunnari aggregations observed were mainly in the northern, north-western and north-eastern parts of the island shelf. Near Shag Rocks they could be seen in separate years. Year-to-year fluctuations of catch per unit effort, predominance of certain groups of specimens and mean weight of the fish were obviously governed by the intensity of fishing.
