Miculenchus muscus

 

Contents

 

Rev 05/18/2021

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

      

Tylenchida
       Tylenchina
        Tylenchoidea  
         Tylenchidae  
          Tylenchinae


          Miculenchus muscus Panahandeh, Pourjam, Alvarez-Ortega, Afshar & Pedram, 2019

   

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Morphology and Anatomy:

.The absence of a bursa in males is one of the distinguishing features of the genus Miculenchus.

Refer to subfamily diagnosis (Tylenchinae).

Female:  

  • Body straight or slightly ventrally arcuate when heatrelaxed.
  • Cuticle coarsely annulated, annuli 0.8-0.9 μm wide at mid-body with zigzag margins
  •  Lateral field prominent, marked by a single longitudinal ridge with smooth margins
  • Cephalic region continuous body contour, hemispherical, finely striated, with well-developed protuberant labial plate appearing as a small disc-like structure.
  • Amphidial apertures crescent-shaped open pores .
  • Stylet thin and weak, conus 29-41% of its total length, with rounded and slightly posteriorly directed knobs.
  • Dorsal esophageal gland orifice close to stylet knobs.
  • Procorpus slender, metacorpus oval with moderately developed valve, isthmus elongate, postcorpus pyriform, cardia discoid.
  • Excretory pore at level with anterior part of pharyngeal bulb,
  •  Reproductive system monodelphic-prodelphic,
  • Ovary outstretched, oocytes arranged in single row, oviduct not clearly discernible,
  • Spermatheca filled with spheroid sperm cells, crustaformeria distinct, its cell arrangement not clearly seen,
  • Post-uterine sac short, vagina with thin wall, straight or slightly anteriorly inclined, vulva a transverse slit without flap.
  • Tail conoid, gradually tapering, with finely pointed tip, sometimes appearing to have a short mucron with several fine bristles on tip.

Males:  

  • Rare but considered sexually functional (sperm cells observed inside spermatheca of female).
  • General morphology similar to that of female except for slightly shorter body.
  • Cephalic region hemispherical and similar to that of female.
  • Stylet thin, with rounded to slightly posteriorly sloping knobs.
  • Procorpus cylindrical, median bulb oval with moderately developed valve, isthmus slender and postcorpus bulb pyriform.
  • Testis single and outstretched. Spermatocytes in two rows after germinal zone, vas deferens full of spheroid sperm cells.
  • Spicules slender, slightly ventrally arcuate.
  • Gubernaculum trough-shaped. Cloacal lips projecting and forming a short, posteriorly directed penial tube.
  • Bursa absent.
  • Tail similar to that of female.

 

 

Ref. Panahandeh et al., 2019


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

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Distribution:

Described from moss growing on a tree trunk in Iran.

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Economic Importance:

 

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Feeding:

 

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Hosts:

For an extensive host range list for this species, click


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Life Cycle:

Although males are less frequent than females, presumed sexually reproducing because males present and sperm in female spermatheca.

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:

Panahandeh, Y., E. Pourjam, S. Alvarez-Ortega, F.J. Afshar and M. Pedram. 2019. New observations on Miculenchus Andrassy, 1959 (Nematoda: Tylenchidae) with descriptions of two new and one known species from Iran. Nematology 21:937-956.

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Copyright © 1999 by Howard Ferris.
Revised: May 18, 2021.