• Korean Journal of Fisheries and Aquatic Sciences
• /
• v.42 no.2
• /
• pp.151-156
• /
• 2009

The stomach contents of Lumpenella longirostris, Malacocottus gibber and Bothrocara hollandi from the East Sea were examined to determine their feeding ecology. Specimens were caught seasonally from 2004 to 2006. The primary prey items of each species included crustaceans and mollusks. L. longirostris is a benthophage that primarily consumes bottom crustaceans and bivalves. M. gibber and B. hollandi are meso-pelagicphages that primarily consume amphipods and cephalopods. However, the species are opportunistic feeders that exploit the available prey in their habitat. The empty stomach ratio of the species is larger than that of offshore species (e.g. hairtail fish and yellow goose fish), and the prey diversity of the species evaluated in this study was much smaller than that of offshore species.

• Journal of fish pathology
• /
• v.28 no.2
• /
• pp.79-85
• /
• 2015

A specimen of porous-head eelpout Bothrocara hollandi (Zoarcidae: Perciformes) caught from the East Sea was found to harbour a myxosporean parasite. Numerous whitish pseudocysts were scattered throughout the body musculature of this individual specimen. Fresh myxosporean spores were found from the squashed pseudocysts under light microscopy. They were subspherical in frontal view with a length of $11.9(11.0{\sim}13.5){\mu}m$, width of $11.6(10.7{\sim}13.6){\mu}m$, and thickness of $7.8(6.9{\sim}8.8){\mu}m$. Two polar capsules were almost equally pyriform with a length of $4.4(3.2{\sim}5.3){\mu}m$ and width of $3.3(2.4{\sim}4.2){\mu}m$. Morphometric and host ecology analysis revealed that this myxosporean parasite could be identified as Myxobolus aeglefini Auerbach 1906. Phylogenetic analysis based on 18S rDNA sequences also revealed that M. aeglefini was clustered with M. albi and M. groenlandicus in the same branch, sharing 97.7% and 96.9% sequence similarities with M. albi and M. groenlandicus, respectively.