Tylenchulus furcus

  

Contents

  

Rev 11/27/2023

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

     
       Tylenchina
        Criconematoidea
         Tylenchulidae
          Tylenchulinae


           Tylenchulus furcus Van den Berg & Spaull, 1982

Type species of the genus.

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Morphology and Anatomy:

   
 

 

Females: swollen, have single ovary, vulva subterminal, eggs deposited in matrix.

  • Vermiform to saccate, C-shaped when heat-killed.    
  • Body narrowing abruptly behind vulva
  • Lip region hemispherical, nor offset; labial framework weak
  • Stylet well-developed, large knobs.
  • Distorted anteriorly due to constriction of host cells.
  • Metacorpus large, oblong; isthmus slender
  • Excretory pore at 65-80% of body length
  • Spermatheca large, filled with sperm
  • Vulval lips bulging prominently; monodelphic, prodelphic, vulva at 90% of body length; postuterine sac absent.
Male: 
 
  • Body slender, ventrally arcuate
  • Lip region hemispherical with weak fremework.
  • Stylet knobs small.
  • Tail ending in a peg-like tip.
  • Spicules curved, no bursa

Juveniles have a forked tail tip esemblig a mucro. This feature distinguishes T. furcus from other species of the genus; it is the etymological basis of the species name.

Ref: Van den Berg and Spaull, 1982

 

 


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

Described from sugarcane at Mount Edgecombe, Natal, South Africa; also reported from grass that was growing poorly in a golf course at Geduld, Springs, South Africa (Van den Berg and Spaull, 1982)


    

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Economic Importance:

    

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Feeding:

Semiendoparasitic, anterior of females embedded in root tissue to mid- or posterior esophagus level.

   
 
   
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Hosts:

Sugarcane

 

For an extensive host range list for this species, click


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Life Cycle:

Presumed sexually reproducing based on sperm-filled spermatheca.

Eggs apparently deposited in gelatinous matrix although few egg sacs were observed in the orifinal description and omly containing a few eggs . Also, few eggs were seen in ovary.

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:

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

 

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References:   

Van den Berg, E., Spaull, V.W. 1982. Two new species of Tylenchoidea on sugar cane in South Africa. Phytophylactica 14:131-144.

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Copyright © 1999 by Howard Ferris.
Revised: November 27, 2023.