Cactodera   

 

Contents

 

Rev 11/19/2019

  Classification Hosts
Morphology and Anatomy Life Cycle

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Economic Importance Damage
Distribution Management

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Feeding  References
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Classification:

    Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Punctoderinae

           Cactodera Krall' & Krall', 1978

    Synonyms:
      None.

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Morphology and Anatomy:

.

Female: Cyst stage present.  

Cyst of Cactodera weissi

  • Body globose, with short neck and terminal cone.  
  • Cuticle thick, with superficial irregular transverse ridges interrupted by short markings, more or less longitudinal; D-layer present (absent in C. betulae).
  • Vulva terminal surrounded by a circumfenestration; vulval slit less than 20 µm long; no underbridge; no bullae; anus without fenestration.  
  • All eggs retained in body (no egg-mass).  

Male: 

  • Body twisted.  
  • Stylet less than 30 µm long.
  • Lateral field with four lines.
  • Spicules greater than 30 µm long, slightly curved, pointed at distal extremity, obliquely directed.  
  • No cloacal tubus.  
  • Tail short, hemispherical. 
  • Second-stage juveniles: Stylet less than 30 µm long. 
  • Lateral field with four lines. 
  • Esophageal glands filling body cavity.  
  • Tail conical, pointed with hyaline terminal half.  
  • Phasmids punctiform.  

    Luc, Maggenti & Fortuner (1988).

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

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Distribution:

 

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Economic Importance:

 

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Feeding:

Nurse cell system: A syncytium.

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Hosts:

For an extensive host range list for this genus, click
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Life Cycle:

For Ecophysiological Parameters for this genus, click 
 
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Damage:

 

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Management:

 

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References:

Luc, Maggenti & Fortuner, Rev. Nematol. 11(2):159-176 (1988).

Subbotin, S.A., Cid Del Prado Vera, I., Mundo-Ocampo, M. & Baldwin, J.G. (2011) Identification, phylogeny and phylogeography of circumfenestrate cyst nematodes (Nematoda: Heteroderidae) as inferred from analysis of ITS-rDNA. Nematology, 13, 805�824. https://doi.org/10.1163/138855410X552661

Subbotin, S.A., Mundo-Ocampo, M. & Baldwin, J.G. (2010) Systematics of cyst nematodes (Nematodes: Heteroderinae). Vol. 8. Part A. Brill Academic Publishers, Leiden, 351 pp

 

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Copyright © 1999 by Howard Ferris.
Revised: November 19, 2019.