Nagelus   

  

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Rev 03/27/2020

  Classification Hosts
Morphology and Anatomy Life Cycle

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 Economic Importance Damage
Distribution Management
Return to Merliniidae Menu Feeding  References
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Classification:

Rhabditida
       Tylenchina
        Tylenchoidea
           Merliniidae
  Merliniinae

          Nagelus Thorne & Malek, 1968

    Synonyms:
      None.
  

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Morphology and Anatomy:

Many diagnostic features for species separation cannot be observede by light microsopy.

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Cephalic framework moderately sclerotized.

SEM face view broadly oval, and laterally elongated, with labial disc partially or completely fused with first lip annule.  Lip annule sectors also partially or completely fused together.  

Amphid apertures between the first annule and labial disc.  The remaining lip annules without longitudinal grooves or indentations.  

Deirids present in the lateral field at a level where the field has six lines.  

Tail irregularly conoid, with a distal hyaline part.        

 
Male: Spicules without well-developed velum, cylindroid, blunt-ended.  

Gubernaculum not protruding from cloaca.

[Ref: Fortuner & Luc (1987), Powers et al., (1983).]

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:

 

 

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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 
 
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Damage:

 

 

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Management:

 

 

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References:

Fortuner & Luc, Rev. Nematol. 10(2):183-202 (1987)

Powers, T.O., Baldwin, J.G., Bell, A.H. 1983. Taxonomic limits of the genus Nagelus (Thorne and Malek, 1968, Siddiqi, 1979 with a description of Nagelus borealis n.sp. from Alaska. J. Nematology 15:582-593.

 

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Copyright © 1999 by Howard Ferris.
Revised: March 27, 2020.