Pratylenchus dakotaensis

Pratylenchus dakotaensis	Contents	Rev 05/25/2026
	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:

       Chromadorea
       Rhabditida
       Tylenchina
        Tylenchoidea
         Pratylenchidae
          Pratylenchinae

Pratylenchus dakotaensis Handoo, Yan, Kantor, Huang, Chowdhury, Plaisance, Bauchan & Mowery, 2021

Morphology and Anatomy:

General characteristics:

Slender and vermiform, typical of genus
Lateral field with four lines, the outer two lines being areolated
Lip region flat to dome-shaped, slightly offset with the body contour, with three fine annuli.
En face view with rectangular subdorsal and subventral lips fused with oral disc in a dumbbell- to dome-shape
Stylet short and robust with rounded knobs. DEGO 2-3 um behind stylet base.
Procorpus is cylindrical, metacorpus muscular and rounded to slightly oval-shaped with cuticularized valve plates; nerve ring encircles median part of isthmus; excretory pore posterior with hemizonid two annuli anterior to excretory pore. Pharyngeal glands overlap intestine ventrally.
Molecular analysis indicates that P. dakotaensis differs from morphologically-similar species including P. convallariae, P. pratensis, P. fallax, and P. flakkensis.

Females:

Monodelphic, prodelphic, ovary outstretched with single row of oocytes. Post-uterine sac is 18-20 um long
Vulva at 73-83% of body length; vulval lips are slightly protruding without lateral or epiptygma.
Tail broad and broad is conical; terminus rounded to truncate- or clavate-shaped.
Phasmids located at mid-tail.

Males:

Common, monorchic, testis outstretched
Spicules and gubernaculum curved ventrally, 16-18.5 um and 4-5 um, respectively.
The tail is short, bluntly rounded to pointed.
Bursa encircles tail
Phasmids prominent.

Ref: Handoo et al., 2021

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

Distribution:

Described from a soybean field in Walcott, Richland County, North Dakota, USA.

Hosts:

Soybeans

For an extensive host range list for this species, click

Life Cycle:

Sexually reproducing based on the presence of males and of sperm in the spermatheca.

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click	If species level data are not available, click for genus level parameters

Management:

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click

Handoo, Z.A., Yan, G.;,Kantor, M.R., Huang, D., Chowdhury, I.A., Plaisance, A., Bauchan, G.R., Mowery, J.D. 2021. Morphological and Molecular Characterization of Pratylenchus dakotaensis n. sp. (Nematoda: Pratylenchidae), a New Root-Lesion Nematode Species on Soybean in North Dakota, USA. Plants 2021, 10:168. https://doi.org/10.3390/plants10010168