Journal of Nematology (2023) 55 (0013)

Rory J. McDonnell, Dana K. Howe and Dee R. Denver (2023)
First report of the gastropod-killing nematode, Phasmarhabditis californica, in Washington State, U.S.A.
Journal of Nematology 55 (0013)
Abstract: Phasmarhabditis californica, a commercially available biological control agent in England, Scotland, and Wales (Nemaslug 2.0 ®), was discovered for the first time in Washington State during 2022. Nematodes were recovered from the invasive gastropods Arion hortensis, Deroceras reticulatum, and Oxychilus sp. in garden centers in both Vancouver and Spokane. The 18S ribosomal RNA gene was used to identify the nematodes. This discovery builds upon previous reports of P. californica in California and Oregon and suggests that the species is widespread throughout the west coast of the U.S. Future research directions with P. californica are proposed.
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Full text of article
Database assignments for author(s): Rory J. McDonnell

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Arion hortensis		U.S.A. (NW)
	Deroceras reticulatum		U.S.A. (NW)
Phasmarhabditis californica (pathogen)	Arion hortensis		U.S.A. (NW)
Phasmarhabditis californica (pathogen)	Deroceras reticulatum		U.S.A. (NW)