Dolichodorus costaricensis

  

Contents

  

Rev 11/12/2022

Awl Nematode Classification Hosts
Morphology and Anatomy Life Cycle
Return to Dolichodorus Menu Economic Importance Damage
Distribution Management
Return to Dolichodoridae Menu Feeding  References
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 Classification:  

Rhabditida
       Tylenchina
        Tylenchoidea
         Dolichodoridae
            Dolichodorinae


         Dolichodorus costaricensis  Esquivel, Ferris, Cid del Prado & Subbotin, 2017

 

Synonyms:
      None.

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Morphology and Anatomy:

 

 

  • Head rounded and flattened distally
  • Lip region with a distinctive flat oral disc

Female:

  • Vulva and vagina without evident sclerotization
  • Body length (1.9-2.4 mm)
  • Body width (32-45 µm)
  • Stylet length (74-117 µm)
  • Esophagus length (202-258 µm)
  • Tail length (62-86 µm).

Male:

  • Similar to female in general features but somewhat shorter and thinner
  • Body length (1.5-2.3 mm)

 

Ref: Esquivel et al., 2017



Molecular characterization using the D2-D3 expansion fragments of 28S rRNA gene indicates that D. costaricensis has a sister relationship with D. mediterraneus.
D. costaricensis: lip region with oral disc.
D. costaricensis: male tail with detail of gubernaculum terminus
D. costaricensis: male tail SEM showing cloaca, bursa and tail tip

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

 D. costaricensis: anterior
  Photographs, drawings and SEM by Alejandro Esquivel (Esquivel et al., 2017)  
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Distribution:

Collected around the roots of an Inga ruiziana G. Don tree on the bank of small stream near San Andres Road, east of Matapalo, Puntarenas, Costa Rica.  Soil texture a well-aggregated and undisturbed sandy clay loam.

Near the type locality, San Andres, Matapalo, Costa Rica:
Bag containing soil sample with the type specimens of Dolichodorus costaricensis!
A result of a sampling expedition to collect specimens for a nematode and soil ecology course taught at Universidad Nacional de Costa Rica
Photograph by Ignacio Cid del Prado Vera

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Economic Importance:

 

 

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Feeding:

Ectoparasite mainly at root tip; nematode has long stylet.

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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:

Esquivel, A., Ferris, H., Cid del Prado, I., Subbotin, S.A. 2017. Dolichodorus costaricensis n. sp. (Tylenchida: Dolichodoridae): a new awl nematode species from the Central Pacific region of Costa Rica. Nematropica 47:143-154.

 

 

 

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Copyright 1999 by Howard Ferris.
Revised: November 12, 2022.