Bathyepsilonema lopheliae




Rev 03/08/2022

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle

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    Bathyepsilonema lopheliae Raes, Vanreusel & Decraemer, 2003
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Morphology and Anatomy:

  • Body relatively short (0.4 mm) and stout; curved most significantly in anterior half.
  • Head dome-shaped with large spiral amphids
  • Broad cuticular annules.
  • Ambulatory setae posterior to half body length on a ventral curve of the body.
  • Tail short and conical,


  • Monorchis, testis outstretched.
  • Spicules slnedr, curved to a 90 degree angle.


  • Didelphic, ampidelphic
  • Vulva surrounded by radial cuticular ridges.
  • The condition of separate outlets for the three caudal glands is common among the genera of the Epsilonematidae however, in females of this species the glands appear to have a single opening/\.

Ref: Raes et al., 2003

Epsilonematidae are characterized by having an ε-shaped body (hence the name) and setae used in looper locomotion on the ventral surface of the body. 

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:



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Collected from  coral (Lophelia pertusa) in a deep-sea environment at 1005 meters off the coast of Belgium.


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Biology and Ecology:

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters


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Ecosystem Functions and Services:


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Raes, M., W. Decraemer and A. Vanreusel. 2006. Postembryonic morphology in Epsilonematidae, with a discussion on the variability of caudal gland outlets.  J. Nematology 38:97-118.

Raes, M. Vanreusel, A. Decraemer, W. 2003. Epsilonematidae (Nematoda) from a cold-water coral environment in thePorcupine Seabight, with a discussion on the status of the genus Metaglochinema  Gourbault & Decraemer, 1986. Hydrobiologia 505:49-72.

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Copyright © 1999 by Howard Ferris.
Revised: March 08, 2022.