The species composition and bathymetric distribution of the fish fauna of Terra Nova bay (Ross Sea) was investigated during the 6th Antarctic Italian Expedition (austral summer 1990/91).
Samples were collected using fixed gears (nets, hooks and traps) and working along four transects from the coast to off-shore, down to 680 m.
The bulk of catches were Nototheniidae (10 species, 83 % by weight), followed by Channichthyidae (four species, 16 % by weight), Bathydraconidae (three species), Artedidraconidae (two species) and Liparididae (one species).
A shift in species composition and abundance with depth suggests the presence of different assemblages of fish at different levels sampled.
A detailed statistical analysis of catches in relation to various variables (depth, fishing gears, station, etc.) is also carried out.
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There is no abstract available for this document.
There is no abstract available for this document.
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There is no abstract available for this document.
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Abstract:
The diet composition and feeding intensity of mackerel ice fish (Champsocephalus gunnari) around South Georgia in January/February 1991 was analyzed in 3877 stomachs collected on 44 stations. Both, the proportion of krill (Euphausia superba) in the stomachs and the feeding intensity were uncommonly low in a period when energy-rich food is needed for the final maturation of the gonads.
