Radopholus bridgei

  

Contents

  

Rev 12/16/2024

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Radopholus Menu Economic Importance Damage
Distribution Management
Return to Pratylenchidae Menu Feeding  References
Go to Nemaplex Main Menu       Go to Dictionary of Terminology

Classification:

     Chromadorea


       Rhabditida

       Tylenchina 
        Tylenchoidea
         Pratylenchidae
          Pratylenchinae
           Radopholus bridgei Siddiqi & Hahn, 1995

 

Back to Top

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:

 
Back to Top

Distribution:

Species described from turmeric near Bogor, Java.

Back to Top

Economic Importance:

 

Back to Top

Feeding:

 Migratory endoparasite in all life stages.      

Back to Top

Hosts:

For an extensive host range list for this species, click


Back to Top

Life Cycle:

Ecophysiological Parameters:

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

 

Back to Top

Damage:

Back to Top

Management:

Resistance

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

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

 

 

Back to Top

References:

 

Back to Top
Copyright © 1999 by Howard Ferris.
Revised: December 16, 2024.