Journal of Nematology (2006) 38, p. 288 (Riga et al.)

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E. Riga, L.A. Lacey, N. Guerra and H.L. Headrick (2006)
Control of the oriental fruit moth, Grapholita molesta, using entomopathogenic nematodes in laboratory and fruit bin assays
Journal of Nematology 38 (2), 288-288
Abstracts of Society of Nematologists 45th Annual Meeting, Lihue, Hawaii, 18-21 June 2006
Abstract: The oriental fruit moth (OFM), Grapholita molesta (Busck), is amongst the most important insect pests of peaches and nectarines and it has developed resistance to a wide range of insecticides. We investigated the ability of the entomopathogenic nematodes (EPN) Steinernema carpocapsae, S. feltiae, S. riobrave, and Heterorhabditis marelatus to control OFM under laboratory and fruit bin conditions. At a dosage of 10 infective juveniles (IJ)/cm2 in the laboratory, S. carpocapsae caused 63% OFM mortality; S. feltiae 87.8%; S. riobrave 75.6%; and H. marelatus 67.1% mortality. All four nematode species caused significantly higher OFM larval mortality in comparison to the untreated controls. Steinernema feltiae was used for the bin assays due to its ability to search for OFM under cryptic environments. Diapausing cocooned OFM larvae in miniature fruit bins were susceptible to IJ of S. feltiae in infested corner supports and cardboard strips. Treatment of bins with S. feltiae 10 or 25 IJ/ml suspensions of water with wetting agent (Silwet L77) resulted in 33.3-59% and 77.7-81.6% OFM mortality in corner supports and cardboard strips, respectively. This paper presents new information on the use of EPN, specifically S. feltiae, as non-chemical means of OFM control.
Database assignments for author(s): Ekaterini Riga, Lawrence A. Lacey

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

Pest and/or beneficial records:

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

Grapholita molesta
Heterorhabditis marelata (entomopathogen) Grapholita molesta
Steinernema carpocapsae/Xenorhabdus nematophila (entomopathogen) Grapholita molesta
Steinernema feltiae/Xenorhabdus bovienii (entomopathogen) Grapholita molesta
Steinernema riobrave/Xenorhabdus cabanillasii (entomopathogen) Grapholita molesta