Ditylenchus cyperi

 

Contents

 

Rev 07/04/2023

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

      Tylenchida
       Tylenchina
        Tylenchoidea
         Anguinidae
          Anguininae
          
 Ditylenchus cyperi Husain & Khan, 1967

 

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Morphology and Anatomy:

 

Ditylenchus cyperi: D: Female esophageal region; E: Male tail; F: Lateral field; G: Female tail (from Husain and Khan, 1967)


   Males:

  • Similar in appearance to females.
  • Monorchic, testis outstretched spermatocytes serially arranged.
  •  Spicules paired, ventrally arcuate, cephalated, 15-18 um long.
  • Gubernaculum simple, 7-9 um long
  • Bursa subcaudal, starting anterior to level of head of spicules

Ref: Husain and Khan, 1967

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


 

Females:

  • Body cylindrical, regularly tapering towards both extremities.
  • Cuticle finely annulated. Lateral field marked by five incisures.
  • Lip region continuous with the body contour, flat and rounded.
  • Stylet weakly developed with knobs, 10-11 um long. DEGO close to stylet base.
  • Esophageal corpus slender, cylindrical; oval valvulated median bulb.
  • Basal esophageal bulb slightly overlapping the intestine ventrally.
  • Isthmus encircled by a nerve ring.
  • Excretory pore situated near the beginning of the basal esophageal bulb.
  • Hemizonid 2-3 body annules long, situated just anterior to the excretory pore.
  • Monodelphic, prodelphic, ovary outstretched with oocytes arranged in a single file; rounded spermatheca
  • Vulva a transverse slit. 
  •  Postuterine sac extending half of vulva-anus distance.
  • Tail convex-conoid ending in a subacute terminus.
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Distribution:

Described from soil around roots of Cyperus rotundus on Aligahr Muslim University campus, Aligarh, India.

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Economic Importance:

 

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Feeding:

  Stylet appearing slender and quite weak; probably ectoparasitic om thin-walled cells and root hairs; could be fungivorous.

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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:

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:

Husain, S.I.  and Khan, A.M. 1967. A new subfamily, a new subgenus and eight new species of nematodes from India belonging to superfainily Tylenchoidea1. Proc. Helminthol Soc. Washingtom 34:175-186.

 

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Copyright 1999 by Howard Ferris.
Revised: July 04, 2023.