Miculenchus salmae

 

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 salmae Siddiqi, 1979) Wanless & Davis, 1997

Synonyms:

Zanenchus salmae Siddiqi, 1979

Filenchus salmae (Siddiqi, 1979) Raski & Geraert, 1987
   

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Morphology and Anatomy:

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

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Refer to subfamily diagnosis (Tylenchinae).

Female:  

  • Body straight or slightly ventrally curved after fixation.
  • Cuticle with prominent annuli with zigzag margins.
  •  Lateral field conspicuous, with two smooth incisures
  • Cephalic region continuous with body contour, hemispherical, with very fine annuli and a small ellipsoid-hexagonal labial plate
  • Amphid apertures crescent shaped,
  • Stylet delicate, conus forming 28-42% of its total length, knobs small, rounded and slightly posteriorly sloping.
  • Dorsal esophageal gland outlet at 1.5 μm from stylet base.
  • Procorpus elongate, cylindrical, metacorpus ovate,with distinct central valva. Isthmus slender and long, postcorpus elongate-saccate and offset. Cardia rounded.
  • Excretory pore at posterior half of isthmus.
  •  Reproductive system monodelphic-prodelphic, outstretched ovary with oocytes in single row, short oviduct, and an offset, oval to rounded spermatheca containing spheroid sperm. Crustaformeria quadricolumellate.
  • Vagina slightly anteriorly directed, vaginal walls slightly thickened, vulva a simple transverse slit, slightly sunken into body and lacking flaps.
  • Post-uterine sac absent.
  • Tail elongate conoid, gradually tapering to a pointed to sharp terminus bearing several small bristles on tip.

Males:  

  • General morphology similar to that of female
  •  Testis single and outstretched.
  • Spicules tylenchoid, slender, manubrium slightly offset, shaft remarkably long and slender, blade ventrally arcuate at distal region.
  • Gubernaculum trough-shaped.
  • Cloacal lips projecting, 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:

The population studied by Panahandeh et al., (2019) was recovered from grassland soil in Ardebil province, 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.