Xenocriconemella macrodora

 

Contents

 

Rev: 09/14/2023

Ring Nematode Classification Hosts
Morphology and Anatomy Life Cycle
Return to Xenocriconemella Menu Economic Importance Damage
Distribution Management
Return to Criconematidae Menu Feeding References
    Go to Nemaplex Main Menu   Go To Dictionary of Terminology 

Classification:

      Tylenchida
       Tylenchina
        Criconematoidea
         Criconematidae
          Discocriconemellinae

           Xenocriconemella macrodora (Taylor) De Grisse and Loof, 1965
   

Synonyms:

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Morphology and Anatomy:

Female:

Small body with large number of annules.

At the anterior end, the first body annule is not anterior to the second but inside it.

Stylet long and flexible

Vulva is closed and vulval lips form a sleeve. 

Xenocriconemella macrodora
Photomicrograph by Jon Eisenback, Society of Nematologists 

Ref Geraert (2010)

 

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

 

 

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Distribution:

Specimens of this interesting group of nematodes were rarely detected in soil samples, and were usually in low numbers, until the development of sugar flotation and centrifugation extraction techniques (Jenkins, 1964). Those techniques maximize recovery of "wide-bodied", slow-moving nematodes.

Xenocriconemella macrodora was firs reported from Forest soils in Virginia, USA (Taylor, 1936), and later from Germany, The Netherlands, Belgium, India, , South Korea, Italy, Mexico, South Africa, Norway, Czechoslovakia, Spain and UK, especially associated with Quercus species in wet areas (Bello et al., 1986) 

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Economic Importance:

D-rated pest in California Nematode Pest Rating System.

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Feeding:

 Ring nematodes feed ectoparasitically on root tips or along more mature roots. The nematodes are migratory unless soil pore space limits their movement. Adult stages of the larger ring nematode adults appear sedentary or stuck within their pore space as they develop to adult size. 

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Hosts:

Oak (Quercus spp.) and Beech (Fagus spp.).

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
 

Nematodes exhibit characteristic slow, sluggish movement.

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Damage:

 

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Management:

Extraction poor except with sugar/centrifuge - then found more readily.

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:

Bello, A., Boag, B, Topham,  P.B., Ibanez, J.J. 1986.  Geographical distribution of Xenocriconemella macrodora (Nematoda: Criconematidae). Nematologia Mediterranea 14:223-229.

Brzeski, M., P.A.A. Loof and Y.E. Choi . 2002.  Compendium of the genus Criconemoides Andrassy, 1965 (Nematoda: Criconematidae).  Nematology 4:341-360.

Geraert, E. 2010. The Criconematidae of the World: Identification of the Family Criconematidae. Academia Press, Gent. 615p.

Taylor A. L. 1936. The genera and species of the Criconematidae, a sub-family of the Anguillulinidae (Nematoda). Trans. Amer. Micr. Soc., 55: 391-421.


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