TY - JOUR N2 - Observations indicate a constantly decreasing mean age of shoal. In consecutive years of investigations a loss of older individuals was recorded. At present the catches consist of 3—14 years old fishes; 9—10 years old dominate. During the austral summer the fish most probably do not migrate. The shoal of the shelf maintains approximately constant frequency and dominance in classes of length. L1 - http://journals.pan.pl/Content/111641/PDF-MASTER/1980_4_155-162.pdf L2 - http://journals.pan.pl/Content/111641 PY - 1980 IS - No 4 EP - 162 KW - Antarctic fish KW - age KW - migration KW - reproduction KW - feeding A1 - Skóra, Krzysztof Edward PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 1 DA - 1980 T1 - Changes in composition of Notothenia gibberifrons Lonnberg population of the shelf of South Georgia in the years 1977—1979 SP - 155 UR - http://journals.pan.pl/dlibra/publication/edition/111641 T2 - Polish Polar Research ER -