Within-Plant Distribution of Frankliniella species (Thysanoptera: Thripidae) and Orius insidiosus (Heteroptera: Anthocoridae) in Field Pepper
By Eric A. Hansen, Jerrad Funderburk, S. Reitz, S. Ramachandran, J. Eger, H. McAuslane. 2003
97 citations recorded by the source corpus.
Abstract We evaluated the within-plant distribution of Frankliniella spp. and the predator Orius insidiosus (Say) in pepper (Capsicum anuum L.), over a range of field conditions, and we conducted behavioral experiments to examine the time budgets of F. occidentalis (Pergande) and F. tritici (Fitch) females on pepper plant parts. In the field experiments Frankliniella species composition varied by season and location. Still, all populations of thrips and O. insidiosus in untreated and insecticide-treated pepper were highly concentrated in the flowers, with 82–99% of individuals of each taxa found in flowers. This preference for flowers was corroborated by laboratory-choice experiments. Adult females of F. occidentalis and F. tritici showed a strong preference for pepper flowers over leaves and buds. In laboratory observations, females of F. occidentalis spent 3.6× as much time on flowers as on all other plant parts, and females of F. tritici spent over 6.3× as much time on flowers as on all other plant parts. Therefore, the concentration of these thrips in flowers appears to be behaviorally based and not an artifact of insecticide applications or sampling. Using estimates of populations from flowers of field pepper is sufficient for understanding the local dynamics of Frankliniella spp. and the predator O. insidiosus, and for estimating the benefits of biological control in scouting programs based on predator to prey ratios.
Subfields: Ecology, Evolution, Behavior and Systematics, Insect Science
View Paper: https://www.semanticscholar.org/paper/433d073aa10109c330baa501c827c7092999aacd
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In Ecology, Evolution, Behavior and Systematics
In Insect Science
Citations in the corpus
- Biology and Ecology of the Western Flower Thrips (Thysanoptera: Thripidae): The Making of a Pest (2009, background): “Adults and larvae aggregate in flowers or other concealed areas on plants, such as developing fruits, foliage, and floral buds (Hansen et al. 2003).”
- Thrips: Pests of Concern to China and the United States (2011, background): “An additional concern with the use of fungal pathogens against thrips has been assuring proper deployment to where thrips are concentrated, such as flowers where F. occidentalis aggregates (Hansen et al. 2003).”