Perepsilonema

  

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Rev 03/21/2022

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle

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 Ecosystem Functions and Services
Distribution Management
Return to Epsilonematidae Menu Feeding  References
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 Classification:

Chromadorea
  Chromadoria
   Desmodorida
Desmodorina
             Desmodoroidea
              Epsilonematidae
     Epsilonematinae
  •      Perepsilonema Lorenzen, 1973

    •   Type species:  Perepsilonema papulosum Lorenzen, 1973

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    Morphology and Anatomy:

    The genus Perepsilonema was erected by Lorenzen (1973) who described Perepsilonema papulosum and established the distinguishing features of the genus.

    The genus is  characterised by four subcephalic setae, one pair of setae close to the amphids, the absence of dorsal thorns posterior to the cephalic capsule and the absence of ambulatory setae (Hendricks and Gibbons, 2010; Verschelde & Vincx 1993).

    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.  The condition of separate outlets for the three caudal glands is common among the genera of this family.  

    Perepsilonema benguelae A=male; B=female; scale bar = 50 microns
    from Hendricks and Gibbons 2010
    Body size range for the species of this genus in the database - Click:
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    Distribution:

    Frequently found with supralittoral or intertidal matine fauna, but also in the deep sea.  Coral fragments are an ideal substrate.

     

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    Feeding:

     

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    Biology and Ecology:
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    Life Cycle:

    For Ecophysiological Parameters for this genus, click 
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    Ecosystem Functions and Services:

     

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    Management:

     

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    References:

    Hendricks, M.G.J., Gibbons, M.J. 2010. Two new nematode species from Saldanha Bay, South Africa: Perepsilonema benguelae sp. nov. and Perepsilonema saldanhae sp. nov. (Desmodorida, Epsilonematidae). Zootaxa 2054:20-30

    Lorenzen, S. 1973. Die Familie Epsilonematidae (Nematodes). Mikrofauna Meeresboden, 25: 1-86.

     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.

    Steiner, G. 1927. Epsilonematidae, a new nemic family. The Journal of Parasitology, 14,:65-66.

     

     

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    Copyright © 1999 by Howard Ferris.
    Revised: March 21, 2022.