Aorolaimus   

  

Contents

  

Rev 04/15/2025

  Classification Hosts
Morphology and Anatomy Life Cycle

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 Economic Importance Damage
Distribution Management
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Classification:

       Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
         Hoplolaimidae
          Hoplolaiminae  

            Aorolaimus Sher, 1963

Type species of the genus: Aorolaimus helicus Sher, 1963

    Synonyms:
      Peltamigratus (Sher, 1963)
      Nectopelta (Siddiqi, 1986)

Note, Fortuner, 1987 and Baujard et al, 1991, 1994 considered Peltamigratus a junior synonym of Aorolaimus. However, Siddiqi (2000) resurrected Peltamigratus.

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Morphology and Anatomy:

Photograph by Ana Child, NREL, Colorado State University

Female:

  • Body spiral to C-shaped, medium sized.   Lip region slightly offset or continuous with body, with or without annules and/or longitudinal striae.  
  • Labial framework and stylet medium sized; stylet knobs flattened to indented anteriorly.  
  • Dorsal esophageal gland opening 3  to 10 �m from stylet base.  
  • Esophageal glands with three nuclei, overlap intestine dorsally and laterally; intestine symmetrically arranged between the subventral glands. 
  • Two genital branches outstretched, equally developed.  
  • Lateral field with four or fewer incisures. 
  • Tail short, rounded. 
  • Phasmids enlarged to scutella erratically situated on body in lateral field, not opposite each other, anterior to anus level; sometimes one scutellum is anterior to vulva level.   

             

 

 The genus Aorolaimus can be distinguiashed from Hoplolaimus by the less massive cephalic framework, the smaller stylet knobs without anterior projections, the lateral field with 4 incisures and areolated only at the phasmids and in the antterior (Sher, 1963).

Male:

  • Caudal alae enveloping tail, lobed in labial region.
  •  Esophageal structures smaller in males than in females

[Ref: Fortuner,  (1987).]
 
Body size range for the species of this genus in the database - Click:
 
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Distribution:

Species reported from Asia, Africa, Europe, North and South America.

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Economic Importance:

 

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Feeding:

Food Sources and Feeding strategies for the genus Aorolaimus

 

 

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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:

Baujard, P., P. Castillo, M. Doucet, B. Martinu., D. Mountport. 1994. Taxonomie studies on the genus Aorolaimus Sher, 1963 (Nemata : Hoplolaimidae). 1. Bibliographie analysis and tentative key to speeies. Fundam. appl. Nernalol.17:103-115

Baujard, P., P. Castillo, M. Doucet, B. Martinu., D. Mountport.  A. Ndiaye. 1991. Variabilite intra- et interspecifique des structures cuticulaires externes dans le genre Aorolaimus (Nemata : Hoplolaimidae). Syst. Parasit., 19: 195-213.

Fortuner, R. 1987. A reappraisal of Tylenchina (Nemata). 8. The family Hoplolairnidae Filip'ev, 1934. Revue N�matol., 10: 219-232.

Siddiqi, M. R. 2000. Chromadorea
       Rhabditida

       Rhabditida


       

: Parasites of plants and insects. CABI Publishing, New York, NY.

Sher, S.A. 1963. Revision of the Hoplolaiminae (Nematoda) II. Hoplolaimus Daday, 1905. and Aorolaimus n. gen. Nematologica 9:267-295.

 

 

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Copyright � 1999 by Howard Ferris.
Revised: April 15, 2025.