Bursaphelenchus juglandis

Bursaphelenchus juglandis	Contents	Rev 07/27/2021
	Classification	Hosts
	Morphology and Anatomy	Life Cycle
Return to Bursaphelenchus Menu	Economic Importance	Damage
	Distribution	Management
Return to Aphelenchoididae Menu	Feeding	References
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Classification:

Chromadorea
Rhabditida
Tylenchina
Aphelenchoidea
Aphelenchoididae; Bursaphelenchinae; Bursaphelenchinae

Bursaphelenchus juglandis Ryss, Parker, Alvarez-Ortega, Nadler & Subbotin. 2021

Morphology and Anatomy:

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

Distribution:

Found associated with walnut twig beetle, Pityophthorus juglandis, and black walnut trees, Juglans spp. with symptoms of thousand cankers disease, in California, USA (Ryss et al., 2021),

Hosts:

For an extensive host range list for this species, click

Life Cycle:

Ecophysiological Parameters:

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

Thousand cankers disaease is a recently recognised disease of walnuts, particularly black walnut (Juglans hindsii) and hybrids of J. hindsii and J. regia. The disease results from the combined activity of the walnut twig beetle Pityophthorus juglandis and the canker-producing fungus, Geosmithia morbida (Kolarik et al., 2011). The fungus often kills black walnut trees within 3 years of the development of symptoms. The role of the nematode inm the disease is uncertain but distribution of the fungus within the tree host and in phoresy of the fungus by the beetles are areas worthy of further study.

Bursaphelenchus juglandis is vectored among trees attached at the head to the underside of the elytra to P. juglandis (Ryss et al., 2021)

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Damage:

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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:

Kolarik, M., Freeland, E., Utley, C. & Tisserat, N. (2011). Geosmithia morbida sp. nov., a new phytopathogenic species living in symbiosis with the walnut twig beetle (Pityophthorus juglandis) on Juglans in USA. Mycologia 103, 325-332.

Ryss, A.Y., C. Parker, S.A. Alvarez-Ortega, S.A. Nadler and S.A. Subbotin. 2021. Bursaphelenchus juglandis n. sp. (Nematoda: Aphelenchoididae), an associate of walnut twig beetle, Pityophthorus juglandis, the vector of thousand cankers disease. Nematology 23:171-200.