Atalodera ucri

  

Contents

  

Rev 12/20/2024

  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
         Heteroderidae
          Heteroderinae

           Atalodera ucri Wouts & Sher, 1971

The type species of the genus

    Synonyms:
      None.

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Morphology and Anatomy:

.

 Female: No cyst stage.  

Body globose, with projecting neck and terminal cone.  

Cuticle thick, annulated on fore part of body, with lace-like pattern on the posterior part.  D-layer present.  No subcrystalline layer.

Vulva on prominent terminal cone, with thick cuticle, constituted by protruding and developed vulval lips.  

Anus situated on the side of posterior vulval lip.  

Eggs retained in body.  
Male: Body twisted. 

Lateral field with four lines.

Spicules greater than 30 µm, slightly curved, obliquely directed.  

Tail short, hemispherical. 

Cloacal tubus short.  

No phasmids.  

Second-stage juveniles:

Lateral field with three lines.

Esophageal glands not filling body cavity.  

Tail conical, with hyaline part half of total length.  

Phasmids prominent, with lens-like structure.  

[Ref: Luc, Maggenti & Fortuner,  (1988).]

 

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

 

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Economic Importance:

D-rated pest in California Nematode Pest Rating System.

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Feeding:

Nurse cell system: A syncytium.

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Hosts:

Haplopappus palmeri

Eriogonum fasciculatum Benth., California Buckwheat

 
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:

Luc, Maggenti & Fortuner, Rev. Nematol. 11(2):159-176 (1988)

Mundo-Ocampo, M. and J. G. Baldwin. 1983. Host-parasite relationships of Atalodera spp. (Heteroderidae). Journal of Nematology 15:234-243.

Siddiqui, I. A., S. A. Sher and A. M. French. 1973. Distribution of Plant Parasitic Nematodes in California. State of California Department of Food and Agriculture, Division of Plant Industry. 324p.

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Copyright © 1999 by Howard Ferris.
Revised: December 20, 2024.