Evaluating Edovum puttleri Grissell and Podisus maculiventris (Say) for Augmentative Biological Control of Colorado Potato Beetle in Tomatoes

Multiple releases of Edovum puttleri Grissell (Hymenoptera: Eulophidae) and Podisus maculiventris (Say) (Heteroptera: Pentatomidae) resulted in increased parasitism and predation rates of eggs of Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say), in small plots of staked tomatoes grown i...

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Bibliographic Details
Published in:Biological control 1999, Vol.16 (1), p.35-42
Main Authors: Tipping, Philip W, Holko, Carol A, Abdul-Baki, Aref A, Aldrich, Jeffrey R
Format: Article
Language:English
Subjects:
augmentative biological control
biological control
Colorado potato beetle
Edovum puttleri
insect control
Leptinotarsa decemlineata
live mulches
mulching
nymphs
ova
parasites
parasites of insect pests
parasitism
plastic film
Podisus maculiventris
population density
predators
predators of insect pests
predatory insects
Solanum lycopersicum var. lycopersicum
staked tomatoes
Vicia villosa
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Summary:Multiple releases of Edovum puttleri Grissell (Hymenoptera: Eulophidae) and Podisus maculiventris (Say) (Heteroptera: Pentatomidae) resulted in increased parasitism and predation rates of eggs of Colorado potato beetle (CPB), Leptinotarsa decemlineata (Say), in small plots of staked tomatoes grown in plastic or hairy vetch mulch. No consistent effect of the mulch on CPB infestations was found over the years of the study. No parasitism by E. puttleri occurred in 1995, while parasitism ranged from 0 to 30.6% per sample date in 1997. P. maculiventris nymphs were found at higher densities in release plots and readily attacked CPB egg masses. Despite the ability of both beneficials to search the structurally complex plant and find the pest, the cost of maintaining release rates that were high enough to achieve significant control of the pest would be prohibitive on a larger scale.
ISSN:1049-9644
1090-2112
DOI:10.1006/bcon.1999.0738