Radopholoides

 

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Rev 09/14/2023

  Classification Hosts
Morphology and Anatomy Life Cycle
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Distribution Management
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Classification:

       Tylenchina
       Tylenchoidea
        Pratylenchidae
         Pratylenchinae  

   
           Radopholoides De Guiran, 1967

Type species of the genus: Radopholoides litoralis De Guiran, 1967

    Synonyms:
  

The genus Radopholoides was established for those Radopholus species having a monodelphic reproductive system where the posterior genital branch is reduced and non-functional (De Guiran, 1967). Variously, the genus Radopholoides has been synonymized to genus Radopholus (Luc, 1987) or Hoplotylus (Andrássy, 2007). Sturhan (2008) declared the validity of the genus Radopholoides after a detailed morphological comparison with Hoplotylus (Maria et al. (2017).

 

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Morphology and Anatomy:

Radopholoides is characterized by the monodelphic female reproductive system, four (occasionally three) lateral lines, stylet less than 20 um long, dorsal overlap of the esophageal glands over the intestine, a conoid tail with rounded terminus, and phasmids located anteriorly in the tail region. The male has a high, rounded lip region  and  the bursa envelops the tail tip; the spicules are cephalated and pointed, the gubernaculum is about half as long as the spicule; the cloacal lips are raised and rounded (Geraert, 2013; Maria et al., 2017).

The major difference betwqeen Radopholoides and Radopholus is the absence of the posterior genital branch in females.

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 Female:  
  • lip region  low and rounded
  • monodelphic, prodelphic
  • posterior genital branch reduced

 

Males:

  • head high and rounded
  • bursa enevlops tail
  • picules are cephalated and pointed
  • gubernaculum is about half as long as the spicule
  • cloacal lips are raised and rounded

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:

Andrassy, I. 2007. Free-living Nematodes of Hungary Vol II. Hungarian Natural History Museum, Budapest. 496p.

De Guiran, G. (1967). Description de Radopholoides litoralis n. g., n. sp. (Nematoda: Pratylenchinae). Nematologica 13, 231- 234. DOI: 10.1163/187529267X00085

Geraert, E. (2013). The Pratylenchidae of the world: identification of the family Pratylenchidae (Nematoda: Tylenchida). Ghent, Belgium, Academia Press.

Luc, M. (1987). A reappraisal of Tylenchina (Nemata). 7. The family Pratylenchidae Thorne, 1949. Revue de Nématologie 10, 203-218.

Maria, M., J. Gu, Y. Fang, J. He, P. Castillo and H. Li. 2017. Radopholoides japonicus n. sp. (Nematoda: Pratylenchidae) found in rhizosphere soil associated with Podocarpus macrophyllus from Japan. Nematology 19:1095-1105.

Sturhan, D. (2008). Review of the genera Hoplotylus and Radopholoides (Tylenchida, Pratylenchidae). Journal of Nematode Morphology and Systematics 11, 159-166.

 

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Copyright © 1999 by Howard Ferris.
Revised: September 14, 2023.