Journal article
Effects of Generalist Phytoseiid Mites and Grapevine Canopy Structure on Spider Mite (Acari: Tetranychidae) Biocontrol
Environmental Entomology, Vol.35(1), pp.56-67
2006
Handle:
https://hdl.handle.net/2376/107248
Abstract
Abstract Specialist-feeding phytoseiid mites have a well-documented role in biological control of phytophagous spider mites. However, although there is evidence for the importance of generalist-feeding phytoseiid mites in spider mite suppression, their role is less clear than that of specialists. The effectiveness of generalists as biocontrol agents and their interactions with specialists might be directly influenced by canopy structure or indirectly affected by altering plant microclimate. We manipulated densities of generalist phytoseiid mites and canopy size (large and small) in open-field experiments in an abandoned vineyard. In the first experiment, we increased generalist densities by transferring grapevine foliage housing robust generalist populations, whereas in the second experiment, we lowered generalist densities using the broad-spectrum insecticide chlorpyrifos. In both experiments, we also altered canopy size by tying grapevine shoots. Increasing densities of generalists resulted in lower spi...
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Details
- Title
- Effects of Generalist Phytoseiid Mites and Grapevine Canopy Structure on Spider Mite (Acari: Tetranychidae) Biocontrol
- Creators
- D. A. PrischmannD. G. JamesL. C. WrightW. E. Snyder
- Publication Details
- Environmental Entomology, Vol.35(1), pp.56-67
- Academic Unit
- Entomology, Department of
- Identifiers
- 99900546982101842
- Resource Type
- Journal article