Pratylenchus zeae

  

Contents

  

Rev 10/05/2021

  Classification Hosts
Morphology and Anatomy Life Cycle
Return to Pratylenchus Menu Economic Importance Damage
Distribution Management
Return to Pratylenchidae Menu Feeding    References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

 

Classification:

        Tylenchina
        Tylenchoidea
         Pratylenchidae
          Pratylenchinae

           Pratylenchus zeae Graham, 1951

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Morphology and Anatomy:

  Nematode is 0.4-0.5mm long.

Lip region is generally low and flat; tail conical and rounded.

Nematode has short ventral overlap of esophagus.

Monovarial, uterus prodelphic.

Females are slender.
 

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

Wide.

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Economic Importance:

C-rated pest in California Nematode Pest Rating System.

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Feeding:

 Migratory endoparasite.

All stages feed in the root cortex, never found in vascular tissues.

Extracts from the nematode show cellulolytic enzyme activity.

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Hosts:

Tobacco, corn, sugarcane, cereals.

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

 No males; females reproduce by mitotic parthenogenesis; the somatic chromosome number is 21-26 (Roman and Triantaphyllou, 1969).

In mitotic parthenogenesis there is no fertilization and there is mitotic division of oogonia so that the somatic number of chromosomes is preserved throughout.

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Damage:

Stunting, wilting, premature yellowing of plants, root lesions.

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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:

Roman, J., Triantaphyllou, A.C. 1969. Gametogenesis oand reproduction of seven species of Pratylenchus. J. Nematology 1:357-362.

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Copyright © 1999 by Howard Ferris.
Revised: October 05, 2021.