Paravulvus

 

Contents

 

Rev 01/13/2020

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Paravulvus Menu Ecosystem Functions and Services
Distribution Management
Return to Nygolaimidae Menu Feeding  References
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Classification:

Enoplea
Dorylaimia
      Dorylaimida
Nygolaimina
Nygolaimidae
       Paravulvus  Heyns, 1968

Type species of the genus:

Paravulvus acuticaudatus (Thorne, 1930) Heyns, 1968

=Nygolaimus acuticaudatus Thorne, 1930

=Nygolaimus (Paravulvus) acuticaudatus Thorne, 1930

 

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Morphology and Anatomy:

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Female:  

  • Female reproductive system amphidelphic, ovaries reflexed.
  • Vulva longitudinal, pars distalis vaginae short.
  • Ventral pores near to vulva transformed into special organs called paravulvae, variable in number, shape and position.
                    

    Ref Lazarova et al, 3002.
Paravulvus rhodopensis - vulval region of female showing paravulvae ameked by arrows (Phtotmicrograph from Lazarova et al (2002)

Males:  

  • Massive spicules and slender gubernaculum.
  • Supplements well developed, arranged in a single adanal pair and a usually spaced row of six to 14.


Body size range for the species of this genus in the database - Click:
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Distribution:

Terrestrial, rarely aquatic, associated with moss and higher plants. Reported from: Europe, Asia, Africa and North America.

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Feeding:

Predators.

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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:

Andrassy, I. 2009. Free-living Nematodes of Hungary III.  Hungarian Natural History Museum, Budapest. 608p.

Heyns, J. 1968. A monographic study of the nematode families Nygolaimidae and Nygolaimellidae.  Entomology Memoirs. Department of Agriculture and Forestry, Union of South Africa 1968 No.19 144 pp.

Lazarova, S., Peneva V., Loof, P.A.A. 2002. Paravulvus rhodopensis sp. n. (Nematoda: Nygolaimidae) and three known species from Bulgaria, with notes on the taxonomy of the genus. Nematology 4:505-520.

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Copyright © 1999 by Howard Ferris.
Revised: January 13, 2020.