Journal of Species Research

The National Institute of Biological Resources (국립생물자원관)
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Two unrecorded marine nematode species of Paracanthonchus (Nematoda: Cyatholaimidae) from the East Sea of Korea

  • Lee, Hyo Jin (Dokdo Research Center, Korea Institute of Ocean Science & Technology) ;
  • Jung, Jongwoo (Department of Science Education, Ewha Womans University) ;
  • Rho, Hyun Soo (Dokdo Research Center, Korea Institute of Ocean Science & Technology)
  • Received : 2016.08.30
  • Accepted : 2016.10.13
  • Published : 2016.10.31
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Abstract

Two unrecorded marine nematode species, belonging to genus Paracanthonchus Micoletzky, 1924, are described on the basis of the specimens collected from rocky intertidal seagrass bed on the eastern coast of Korea. Paracanthonchus macrodon (Ditlevsen, 1918) is characterized by presence of cuticular differentiation, strongly dilated gubernaculum with numerous cusps, three post-cloacal setae, and arrangement of six (4+2) precloacal supplement. Paracanthonchus kamui Kito, 1981 is distinguished from other species of the genus by having the 4.25 turns amphideal fovea, six tubular supplement, rib-shaped gubernaculums with proximally hook-shaped and distally broaden. In this study, we provide taxonomic description and illustration of two unrecorded species of the genus Paracanthonchus by differential interference contrast microscopy. This is the first report on the species of the genus Paracanthonchus from Korea.

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References

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