Radopholus bridgei

  

Contents

  

Rev 11/19/2019

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

     Tylenchina
        Tylenchoidea
         Pratylenchidae
          Pratylenchinae
           Radopholus bridgei Siddiqi & Hahn, 1995

 

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Morphology and Anatomy:

Similar to Pratylenchus in general shape and size, but female has two ovaries.

Sexual dimorphism is marked in this genus.

 
  Female:  The female burrowing nematode is 650-800 µm long and 20-24 µm in diameter. 

 

 

Female lip region video

R. bridgei female lip region.  Source: Paul de Ley, UC Riverside.

Female metacorpus region video

R. bridgei female metacorpus region.  Source: Paul de Ley, UC Riverside.

 

 

  • The head is rounded and slightly flattened, offset by a slight constriction. 
  • The esophageal glands overlap the intestine dorsally. 
  • There are two ovaries outstretched anterior and posterior. 
  • The spermatheca is spherical, usually packed with rod-shaped sperm. 
  • The tail shape is elongate conoid ending in a narrowly rounded terminus. The posterior end of the tail has a characteristic hyaline region. 

Males:  Males do not resemble females in appearance. They are 500-600 µm long and more slender than the females.

Male lip region video

R. bridgei male lip region.  Source: Paul de Ley, UC Riverside.

  • The head is rounded, non-sclerotized and off-set by a conspicuous constriction
  • The stylet of the male is slender and indistinctand has small knobs which are difficult to see. 
  • Lip region is conical.
  • Long dorsal overlap.
  • Male has a bursa.
  • Tail tip is acute and rounded.

Male tail region video

R. bridgei male tail region.  Source: Paul de Ley, UC Riverside.

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

 
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Distribution:

Species described from turmeric near Bogor, Java.

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Economic Importance:

 

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Feeding:

 Migratory endoparasite in all life stages.      

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Hosts:

For an extensive host range list for this species, click


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Life Cycle:

Ecophysiological Parameters:

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

 

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Damage:

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Management:

Resistance

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

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

 

 

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References:

 

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Copyright © 1999 by Howard Ferris.
Revised: November 19, 2019.