IMPORTANCE OF MICRONEKTON AS FOOD OF DEMERSAL FISH ASSEMBLAGES

摘要

The importance of micronekton as food of demersal fish assemblages over lower con- tinental shelves and upper continental slopes off Sendai Bay, northern Japan was studied based on a total of 256 trawl samples collected during May and November from 1989 to 1992. All of the dominant gadiform fish species, which made up the bulk of the assem- blages (Gdaus macrocephalus, Theragra chlcogramma, Physiculus maximowiczi and Laemonema longipes) depended on micronekton to some externts, and the dependence Was higher for larger individuals and in the deeper regions.