For the first time, the investigations on feeding of Antarctic toothfish (Dissostichus mawsoni) from the bottom longline catches in the Lazarev Sea were carried out. The analysis of food composition for males and females in the eastern Lazarev Sea showed that dominant food objects for individuals of both sexes include icefish (Chionobathyscus dewitti), Antarctic squid (Mesonychoteuthis hamiltoni), and grenadier (Macrourus whitsoni). During the investigation period the total indices of fullness of stomach for females and males were 1.68% and 2.25%, respectively. The closeness of parameters by both food composition and feeding activity evidenced a lack of competition in food relations among fish of different sexes.
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