Paratrichodorus

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

      Adenophorea
       Triplonchida
        Diphtherophorina
         Diphtherophoidea
          Trichodoridae
           Trichodorinae
              Paratrichodorus Siddiqi, 1974

(31 known species as of 1996)

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 present. 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.

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Feeding:

At root tip.

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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.