Florida Entomologist (2011) 94, 701-702
José Miguel García, David A. Jenkins, José A. Chavarria, David I. Shapiro-Ilan and Ricardo Goenaga (2011)
Interactions of a Rhabditis sp. on the virulence of Heterorhabditis and Steinernema in Puerto Rico
Florida Entomologist 94 (3), 701-702
Abstract: A Rhabditis sp. of nematode was collected from soil and then assayed for virulence to last instar larvae of Diaprepes abbreviatus, both alone and in conjunction with the entomopathogenic nematode species, Steinernema glaseri and Heterorhabditis bacteriophora. When Rhabditis sp. was applied at low doses (10 infective juveniles per cm2), we did not detect a significant difference between the mortality in the Rhabditis sp. treatment and the control treatment. However, cadavers from soil that had been treated with the Rhabditis sp. yielded Rhabditis sp. nematodes, indicating that it is an opportunistic invader of cadavers. When applied with either S. glaseri or H. bacteriophora at low doses, Rhabditis sp. nematodes had no detectable impact on the virulence of the other nematodes, either in total mortality caused or in the speed of the mortality. Because S. glaseri is so much larger than the Rhabditis sp., it was easy to distinguish which nematode emerged from cadavers exposed to both, and in several cases Rhabditis sp. nematodes were detected emerging from cadavers, demonstrating its opportunistic nature.
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Database assignments for author(s): David I. Shapiro-Ilan, David Jenkins
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Diaprepes abbreviatus | Puerto Rico | |||
| Heterorhabditis bacteriophora/Photorhabdus (entomopathogen) | Diaprepes abbreviatus | |||
| Steinernema glaseri/Xenorhabdus poinarii (entomopathogen) | Diaprepes abbreviatus |
