Trichodorus primitivus

  

Contents

  

Rev 10/22/2008

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Trichodorus Menu Economic Importance Damage
Distribution Management
Return to Trichodoridae Menu Feeding  References
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Classification:

      Adenophorea
       Triplonchida
        Diphtherophorina
         Diphtherophoidea
          Trichodoridae
           Trichodorinae
             Trichodorus primitivus
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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 odontostyle with dorsal groove.

Females: Diovarial.

Males: Caudal alae absent. Single testis.

Ref. Decraemer, W. 1996.
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Distribution:

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

Nematode prefers light to medium soils.

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Economic Importance:

 

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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.     

 

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Hosts:

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

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Life Cycle:

Approximately 45 days.

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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.
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Management:

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

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Copyright © 1999 by Howard Ferris.
Revised: October 22, 2008.