Xenocriconemella macrodora

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:

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:

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)

Back to Top

Economic Importance:

D-rated pest in California Nematode Pest Rating System.

Back to Top

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.

Back to Top

Hosts:

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

For an extensive host range list for this species, click

Back to Top

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.

Back to Top

Damage:

Back to Top

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

Back to Top

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.