Senegalonema

 

Contents

 

Rev 12/17/2024

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


       Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
         Hoplolaimidae
         Rotylenchulinae

          Senegalonema (Germani, Luc & Baldwin, 1984)

    Synonyms:
      None.
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Morphology and Anatomy:

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Immature females:

  • Body vermiform, C-shaped.  
  • Labial region high, not offset, not annulated; anterior lip annule divided into six sectors, four submedian sectors triangular, adjacent two by two, dorsally and ventrally.
  • Lateral field with four lines.  
  • Phasmids pore-like, near anus level.  
  • Tail conoid, 2 to 2.5 body anal diameters long, more than half its length non-protoplasmic.  
  • Labial framework and stylet medium-sized.  
  • Dorsal esophageal gland opening about 5  to 7 µm from stylet base in the only known species.  
  • Median bulb oval, with strong valve. 
  • Esophageal glandular overlap mostly lateral, sometimes ventral.  
  • Two genital branches outstretched (diovarial, amphidelphic). 

 

Mature females:

  • Body posteriorly swollen, variously shaped to kidney-shaped, annulated. 
  • Phasmids enlarged.
  • Dorsal esophageal gland opening 5 to 8 µm from stylet.  
  • Gland overlap expanded laterally.  
  • Tail short, conical.  
  • Vulva postequatorial.  
  • Two genital branches very long, convoluted.  

Males:

  • Slight secondary sexual dimorphism seen in smaller anterior end. 
  • Esophagus functional. 
  • Caudal alae enveloping tail end.  
  • Gubernaculum with titillae.

[Ref: Fortuner, (1987).]

Body size range for the species of this genus in the database - Click:

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Distribution:

 

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Economic Importance:

 

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Feeding:

Mature females are semi-endoparasitic, sessile in roots.      

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Hosts:

 
For an extensive host range list for this genus, click
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Life Cycle:

For Ecophysiological Parameters for this genus, click 

Males and immature females free in soil.

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Damage:

 

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Management:

 

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References:

Fortuner, Rev. Nematol. 10:219-232 (1987).]

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Copyright © 1999 by Howard Ferris.
Revised: December 17, 2024.