Paratrichodorus lobatus




Rev 01/12/2020

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             Paratrichodorus lobatus


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Morphology and Anatomy:

Body configuration usually rounded at both ends.

Cuticle tends to swell in water and fixative when nematodes are killed.

Curved onchiostyle with dorsal groove.

Females: Diovarial.


Males: Males are rare. Caudal alae present. Single testis.

Ref. Decraemer, W. 1995

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

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Economic Importance:


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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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Microbial Antagonists

Commercial microbial antagonist formulations performed poorly against Tylenchulus semipenetrans and Paratrichodorus lobatus compared to the nematicides Aldicarb, cadusafos and metalaxyl (Walker and Morey, 1999a)

Green Manures:

Paratrichodorus lobatus reached high levels in pots containing unamended soil but was not detected in pots containing soils amended with Brassica cultivars Ebony and Indian mustards, and Rangi rape residues (Walker and Morey, 1999b). 


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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Decraemer W. 1995. The Family Trichodoridae: Stubby Root and Virus Vector Nematodes. Developments in Plant Pathology, 6. Dordrecht: Kluwer Academic Publishers

Decraemer, W. 2011. Virus vector families Part II. Trichdoridae.Academia Press, Gent.123p.

Walker, G. E.; Morey, B. G. 1999a.  Effects of chemicals and microbial antagonists on nematodes and fungal pathogens of citrus roots. Australian Journal of Experimental Agriculture 39: 629-637.

Walker, G. E.; Morey, B. G. 1999b.  Effect of brassica and weed manures on abundance of Tylenchulus semipenetrans and fungi in citrus orchard soil. Australian Journal of Experimental Agriculture 39: 65-72.

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Copyright © 1999 by Howard Ferris.
Revised: January 12, 2020.