The results obtained during juvenile surveys in Subarea 48.3 are presented. In the period from 1984 to 1990 AtlantNIRO carried out 6 surveys of that type. 40 fish species from 15 families were found in the juvenile trawl catches. Data are given on young icefishes distribution, length composition, vertical diurnal migrations and young Champsocephalus gunnari by-catches in krill fishery.
Abstract:
Experimental acoustic survey in shelf areas off South Georgia and Shag Rocks in CCAMLR Subarea 48.3 aimed at demersal fishes abundance and distribution assessment is described. Data on trawl stations location, catch length compostion, per cent proportion of various fish species in trawls samples, data of biological and oceanologica3 researches are presented. The data on target strengths obtained in- situ for icefish (Champsocephalus gunnari), the latter per cent proportion in trawl catches, velocity and length-weight factors, affecting the genera3 estimation of biomass are analysed.
