Journal of Nematology (2000) 32, 215-222

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J.S. Rosa, E. Bonifassi, J. Amaral, L.A. Lacey, N. Simoes and C. Laumond (2000)
Natural occurrence of entomopathogenic nematodes (Rhabditida: Steinernema, Heterorhabditis) in the Azores
Journal of Nematology 32 (2), 215-222
Abstract: A soil survey for entomopathogenic nematodes was conducted throughout the nine islands of the Azorean archipelago. Forty-six out of 1,180 samples (3.9%) were positive, with Heterorhabditis spp. isolated from 30 sites on six islands and Steinernema spp. isolated from 16 sites on three islands. Sao Miguel and Terceira Islands were positive for both genera, and Pico Island was positive only for Steinernema. Entomopathogenic nematodes were found from sea level up to 750 m. Seventy percent of the samples positive for Heterorhabditis were collected below 150 m, whereas 62.5% of the samples positive for Steinernema were collected above 300 m. Heterorhabditis was not isolated above 450 m. Steinernema was collected mostly in loamy-sand and sandy-loam soils with a pH below 6, whereas Heterorhabditis was mostly collected in sandy and loamy-sand soils with pH higher than 6. Steinernema and Heterorhabditis were found in cropland, orchards, and pastures, while Heterorhabditis was found also in woodland and native vegetation.
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Database assignments for author(s): José Silvino Rosa, Lawrence A. Lacey, Nelson Simoes

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

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Popillia japonica Portugal (Azores)
Pseudaletia unipuncta Portugal (Azores)