Trichodorus similis		Contents		Rev 10/21/2008
		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 similis 

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Morphology and Anatomy:

Females: Diovarial. Males: Caudal alae absent. Single testis.	Nematode is 0.76-0.87 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.

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Distribution:

Temperate regions of Europe.

Nematode prefers light, sandy loam.

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Economic Importance:

D-rated pests in California.

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Feeding:

Ectoparasite on epidermal cells and root hairs; aggregates just behind root tip.

Feeding tube forms within stoma and remains attached to puncture hole.

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.

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Hosts:

Potato, walnut, apple, pear, barley, and carrots.

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Life Cycle:

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Damage:

Feeding causes root growth to stop. Lateral roots attacked, giving rise to "stubby-root" symptom. Nematode also vectors Tobacco Rattle Virus.

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Management:

Control of Docking Disorder achieved with 1,3-Dichloropropene (1,3-D) (65-136 liters/hectare, 6-12 gpa).

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References:

Decraemer, W. 1996.

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Copyright © 1999 by Howard Ferris.
Revised: October 21, 2008.