Changes in the blackfin icefish stock structure, Chaenocephalus aceratus (Lönnberg, 1906), Pisces, Notothenioidei, Channichthyidae) off South Georgia within 1975-1992

Abstract

The paper demonstrates results of the stock monitoring of blackfin icefish in the region of South Georgia in the period of 1988/89-1991/92 as well as summarises seventeen-year period ofobservation (1976/77 -1991/92). The influence of fishing on stock strucrture and supposed reasons of fluctuation ofyear-classes number are discussed.