Trichodorus		Contents		Rev 19-11-2008
		Classification		Hosts
		Morphology and Anatomy		Life Cycle
Return to Trichodorus Menu		Economic Importance		Damage
		Distribution		Management
Return to Trichodoridae Menu		Feeding
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Classification:

      Adenophorea
       Triplonchida
        Diphtherophorina
         Diphtherophoidea
          Trichodoridae
           Trichodorinae
              Trichodorus Cobb, 1913

(47 known species as of 1996)

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Morphology and Anatomy:

.	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:

Worldwide.

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Economic Importance:

Stunt roots, transmit Tobraviruses including Tobacco Rattle Virus, Pea early-browning Virus and Pepper Ringspot Virus.

Tobraviruses are straight tubular particles with two size ranges, 180-210 nm and 45-115 nm. Trichodorus and Paratrichodorus are vectors.

Trichodorus sp. damage to onions in The Netherlands.  Fourth plot from bottom of photograph treated with nematicide.

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Feeding:

At root tip, by repeated thrusting of the odontostyle within a polysaccharide feeding tube.  Cell contents move along the groove along the dorsal side of the odontostyle..

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Hosts:

Nematodes in the Trichodoridae have a wide host range.   

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Life Cycle:

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Damage:

Root tip damage causes root elongation to cease. Hence "stubby root" symptoms.

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Management:

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Copyright © 1999 by Howard Ferris.
Revised: November 19, 2008.