Stomach Contents of Cut-tailed Bagrid Catfish (Pseudobagrus tokiensis) Juveniles in a Drain of a Tributary of Kitakami River

Abstract

Stomach contents of cut-tailed bagrid catfish (Pseudobagrus tokiensis) juveniles were investigated in a drain of Iwaseki River, Kitakami River system, Iwate prefecture. The samples (n=31) were collected on 29, October, 2009. Aquatic insects were main foods of juveniles of cut-tailed bagrid catfish and it would be related to ecological trait of the species (i.e. benthic fish). Among food species, chironomidae larva were occurred from all of sampled stomachs and accounted for 75.1% of relative abundance of stomach contents. The results of the present study suggested that chironomidae larva would be an important food for juveniles of cut-tailed bagrid catfish.