Journal of Economic Entomology (2018) 111, 542-548

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Ryan W. Geisert, Dorothy J. Cheruiyot, Bruce E. Hibbard, David I. Shapiro-Ilan, Kent S. Shelby and Thomas A. Coudron (2018)
Comparative assessment of four Steinernematidae and three Heterorhabditidae species for infectivity of larval Diabrotica virgifera virgifera
Journal of Economic Entomology 111 (2), 542-548
Abstract: Larval Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae) were exposed to seven different entomopathogenic nematode species to test their potential infectivity in a laboratory setting. Known D. virgifera-infecting nematode species Heterorhabditis bacteriophora Poinar, Heterorhabditis megidis Poinar, Jackson and Klein, Steinernema feltiae Filipjev, and Steinernema carpocapsae Weiser were tested in a concerted experiment alongside Steinernema diaprepesi Nguyen and Duncan, Steinernema riobrave Cabanillas, Poinar and Raulston, and a Missouri wild-type H. bacteriophora which have not been previously tested on D. virgifera. The species S. rarum Doucet was tested separately for D. virgifera infectivity. Third-instar D. virgifera were exposed to either 60 or 120 nematodes per larva for 6 d. Following exposure, mortality was recorded and larvae were examined to determine the presence of active nematode infections. Results indicated a significantly higher proportion of larvae with active infections from the Heterorhabditidae species and S. diaprepesi than the other Steinernematidae species for both exposure rates; mortality data indicated a similar trend. Steinernema rarum showed almost no infectivity in laboratory experiments.
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Full text of article
Database assignments for author(s): David I. Shapiro-Ilan, Bruce E. Hibbard

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.

Diabrotica virgifera
Steinernema carpocapsae/Xenorhabdus nematophila (entomopathogen) Diabrotica virgifera
Steinernema feltiae/Xenorhabdus bovienii (entomopathogen) Diabrotica virgifera
Heterorhabditis megidis/Photorhabdus temperata (entomopathogen) Diabrotica virgifera
Steinernema riobrave/Xenorhabdus cabanillasii (entomopathogen) Diabrotica virgifera
Heterorhabditis bacteriophora/Photorhabdus (entomopathogen) Diabrotica virgifera U.S.A. (mid S)
Steinernema diaprepesi (entomopathogen) Diabrotica virgifera