Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Three newly recorded free-living marine nematode species (Nematoda: Chromadorea) from Korea

  • Hyo Jin Lee (East Sea Environment Research Center, Korea Institute of Ocean Science and Technology(KIOST)) ;
  • Heegab Lee (East Sea Environment Research Center, Korea Institute of Ocean Science and Technology(KIOST)) ;
  • Hyun Soo Rho (East Sea Environment Research Center, Korea Institute of Ocean Science and Technology(KIOST))
  • Received : 2022.11.30
  • Accepted : 2022.12.21
  • Published : 2022.12.31
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Abstract

Three free-living marine nematodes(Desmoscolex(Desmoscolex) max Timm, 1970, Daptonema longiapophysis Huang and Zhang, 2010, and Pseudosteineria sinica Huang and Li, 2010) were newly recorded in Korea. Desmoscolex (D.) max was found from subtidal coarse sediment around Wangdolcho in the East Sea. It was characterized by the presence of untypical setae arrangement, obviously elongated triangle-shaped head, long hairy cephalic setae, a long naked tail spinneret, and the absence of peduncle at the base of somatic setae. Daptonema longiapophysis was obtained from intertidal sandy sediments in the southern coast of Korea. It was characterized by the presence of setiform labial sensilla, spicules with a projection on both sides, and gubernaculum with dorso-caudal apophysis. Pseudosteineria sinica was discovered from the intertidal sediment in the Yellow Sea. It was characterized by unobservable amphideal fovea, different lengths of spicules, and gubernaculum with dorso-caudal apophysis. In this study, we provide detailed morphological features of three free-living marine nematodes by differential interference contrast microscopy.

Keywords

Acknowledgement

This research was supported by a grant from the National Marine Biodiversity Institute of Korea (2022M01100) and by the research projects of Korea Institute of Ocean Science and Technology(PEA0016).

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