Meloidodera ferrisi

  

Contents

  

Rev 09/19/2023

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Meloidodera Menu Economic Importance Damage
Distribution Management
Return to Heteroderidae Menu Feeding  References
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Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Meloidoderinae


           Meloidodera ferrisi Cid del Prado Vera & Subbotin, 2023


    Synonyms:
      None.

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Morphology and Anatomy:

Females:

  • Body spherical with a conspicuous dark cover over the cuticle. The cover appears separate from the original cuticle rather than the result of an aging process.
  • Females are pearly-white in colour when cover removed.
  • The body protrudes from the root surface, sometimes isolated but sometimes in a group of females.
  • Cuticle about 10.3 um thick with fine striation over whole body.
  • Necks short and covered by the dark material.
  • Cephalic region with one annulus and a labial disc.
  • Stylet conus thin and curved.
  • Excretory pore at the base of neck.
  • Median bulb spherical with conspicuous valve.
  • Vulva post-equatorial with slightly protruding lips.
  • Anus terminal in a slight depression.

 
Meloidodera ferrisi with covering of dark material
Photograph by Ignacio Cid del Prado Vera		 Scanning elecromicrograph of Meloidodera ferrisi with covering of dark material
Photograph by Ignacio Cid del Prado Vera

Second-stage juveniles:

  • Body vermiform, slightly curved ventrally.
  • Lip region slightly offset and comprised of five annuli.
  • Stylet robust, knobs with anterior projection.
  • Median bulb oval shaped with small valve.
  • Pharyngeal glands overlapping the intestine dorsally.
  • Excretory pore at the first third of pharyngeal glands and, one annulus posterior to the hemizonid.
  • Lateral field with four incisures completely areolated.
  • Phasmid lens like and 2-9 annuli behind anus.
  • Tail conoid, tapering to a finally rounded terminus.

Ref: Cid del Prado Vera and Subbotin, 2023

 

Males:

  • Quite rare
  • Body vermiform, slightly curved ventrally or twisted.
  • Lip region slightly offset and comprised of five fine annuli. the basal of which is not striated but appears as rectangular blocks.
  • Stylet slender with dorsal knobs rounded and lateral, one with slight anterior projection.
  • Median bulb oval shaped with small valve.
  •  Pharyngeal glands dorsally overlapping the intestine.
  • Excretory pore at level of posterior end of dorsal gland and one annulus behind of hemizonid.
  • Lateral field with four incisures.
  • Spicules slightly curved.
  • Phasmids located subterminal.
  • Tail short and with rounded terminus.

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

  
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Distribution:

Species collected from roots and rhizosphere soil of an oak tree, Quercus rugosa, near the road to the town of Cuijingo, Mexico State, Mexico.

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Economic Importance:

 

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Feeding:

Nurse cell system is a uninucleate giant cell.

 

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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:

Females of Meloidodera ferrisi protruding from roots of Quercus rugosa
Photograph by Ignacio Cid del Prado Vera
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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:

Cid del Prado Vera, I. and Subbotin, S.A. 2023. Two new species of sedentary nematodes of the genus Meloidodera Chitwood, Hannon & Esser, 1956 (Tylenchida: Heteroderidae) from Mexico. Nematology 25:1-17.

 

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Copyright © 1999 by Howard Ferris.
Revised: September 19, 2023.