Hirschmanniella pomponiensis		Contents		Rev 09/12/2022
		Classification		Hosts
		Morphology and Anatomy		Life Cycle
Return to Hirschmanniella 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

           Hirschmanniella pomponiensis Abdel-Rahman and Maggenti, 1987

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Morphology and Anatomy:

Average morphometric dimensions - females Body length (mm) 1.9 a (=body length (μm) / body width (μm) 66 b (= body length / esophagus length) 14 Stylet length (μm) 20 Males common Abdel-Rahman and Maggenti (1987)
Female head region of Hirschmanniella pomponiensis. Note that the lip region is not offset and has five annules.  Slit-like amphid aperture below lip region.	Hirschmanniella anterior region.  Note very long overlapping esophageal glands
	One gonad of diovarial female showing oocytes and spermatheca.
Female tail with terminal spike Female tail, lateral field areolated.
Male caudal alae and tail region.

Female: whole body
Metacorpus and excretory pore	Vulva and uteri
Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

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Distribution:

Northern California

Type Locality Pomponio State Beach, San Mateo County, California

Type host: Bulrush, Scirpus robustus Pursh.

		Freshwater creek draining at beach, with bulrushes at edge
Freshwater creek draining at beach, with bulrushes at edge	Contamination sign probably refers to cattle pasture to east	Ferris sampling site west of bridge on US Hwy 1; N37° 17.972’, W122° 24.282’
Photographs by Howard Ferris (August 18, 2010)

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Economic Importance:

D-rated pests in California.

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Feeding:

Migratory endoparasite of roots.  Juveniles and adults enter behind the root tip and move in air channels; can also migrate into older roots. 

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Hosts:

Bulrush (Scirpus robustus)

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Life Cycle:

Ecophysiological Parameters:

 Males and Females present.

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Damage:

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Management:

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

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References:

Abdel-Rahman, F. and Maggenti, A.R. 1987. Hirschmanniella pomponiensis n. sp. (Nemata:Pratylenchidae), parasitic on bulrush, Scirpus robustus Pursh. Journal of Nematology 19:147-151.

Photomicrographs by John Chitambar, CDFA. and Howard Ferris

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Copyright © 1999 by Howard Ferris.
Revised: September 12, 2022.