Pratylenchus scribneri




Rev 11/19/2019

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           Pratylenchus scribneri

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Morphology and Anatomy:

Female Anterior:

Strong head frame, flattened lip region.

Ventral overlap of esophageal glands over intestine.

Female Posterior:

Monovarial, prodelphic;  short post-uterine sac.

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

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Economic Importance:

D-rated pest in California Nematode Pest Rating System.

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    Migratory endoparasite of roots.     

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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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Plates A and B. Young roots; (a) lesions with single nematodes, (b) 3-6 nematodes, (c) up to 50 nematodes, and (d) areas with no nematodes.
Plates C and D. Older roots; (a) with coalesced lesions containing numerous nematodes and eggs, and (b) necrotic areas with few nematodes but numerous eggs.
Lesion development on soybean roots after 45 days exposure to P. scribneri.  From Acosta and Malek (1981).
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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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Acosta, N. and R. B. Malek (1981). Symptomatology and histopathology of soybean roots infected by Pratylenchus scribneri and P. alleni. J. Nematol. 13:6-12.

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Copyright © 1999 by Howard Ferris.
Revised: November 19, 2019.

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