Trichodorus primitivus

  

Contents

  

Rev 01/25/2021

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Trichodorus Menu Economic Importance Damage
Distribution Management
Return to Trichodoridae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

 

Classification:

      Enoplea
       Triplonchida
        Diphtherophorina
         Diphtherophoidea
          Trichodoridae
           Trichodorinae
             Trichodorus primitivus de Man, 1880

Back to Top

Morphology and Anatomy:

  Nematode is 0.71-0.81 mm long.

Body configuration usually rounded at both ends.

Cuticle tends to swell in water and fixative when nematodes are killed.

Curved onchiostyle with dorsal groove.

Females: Diovarial.

Males: Caudal alae absent. Single testis.

Ref. Decraemer, W. 1995

 

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

Distribution:

Temperate regions of Europe; occasionally found in U.S.

Nematode prefers light to medium soils.

Back to Top

Economic Importance:

 

Back to Top

Feeding:

Feeds in cells at the root tip by repeated thrusting of the odontostyle within a polysaccharide feeding tube.  Cell contents move along the groove on the dorsal side of the odontostyle.

Feeding at root tip may cause damage and damage of tap roots in sugarbeet.     

 

Back to Top

Hosts:

Sugarbeet, cabbage, peas, corn, oats, and wheat.

For an extensive host range list for this species, click


Back to Top

Life Cycle:

Ecophysiological Parameters:

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

Approximately 45 days.

Back to Top

Damage:

Involved in Docking Disorder of sugarbeets.

Vectors Pea Early Browning Virus and Tobacco Rattle Virus.

Can cause necrosis of potato tubers.

Trichodorus primitivus damage to sugarbeets.  Plant on right is from a nematicide-treated plot.
Back to Top

Management:

Docking Disorder can be controlled with 1,3-Dichloropropene (1,3-D) (6-12 gal/acre) in low dosages placed 6" beneath rows.

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click

 

Back to Top

References

Decraemer W. 1995. The Family Trichodoridae: Stubby Root and Virus Vector Nematodes. Developments in Plant Pathology, 6. Dordrecht: Kluwer Academic Publishers

Decraemer, W. 2011. Virus vector families Part II. Trichdoridae.Academia Press, Gent.123p.

 
Copyright © 1999 by Howard Ferris.
Revised: January 25, 2021.