Dylan Beal
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View article: Field evaluation of a phagostimulant for enhancing insecticide efficacy against spotted-wing drosophila (Diptera: Drosophilidae) across multiple berry crops and regions
Field evaluation of a phagostimulant for enhancing insecticide efficacy against spotted-wing drosophila (Diptera: Drosophilidae) across multiple berry crops and regions Open
Since its detection in the continental United States in 2008, spotted-wing drosophila (Drosophila suzukii Matsumura) has become a significant pest of thin-skinned fruits. Current management strategies largely depend on calendar-based insec…
View article: Comparison of sampling methods for figitid parasitoids of <i>Drosophila suzukii</i> (Diptera: Drosophilidae)
Comparison of sampling methods for figitid parasitoids of <i>Drosophila suzukii</i> (Diptera: Drosophilidae) Open
Drosophila suzukii (Matsumura) is an invasive pest of berries and cherries in Washington State, and as a direct fruit feeder, has become a key pest in the affected crops. The recent interest in classical biological control using Asian para…
View article: Widespread establishment of adventive populations of Leptopilina japonica (Hymenoptera, Figitidae) in North America and development of a multiplex PCR assay to identify key parasitoids of Drosophila suzukii (Diptera, Drosophilidae)
Widespread establishment of adventive populations of Leptopilina japonica (Hymenoptera, Figitidae) in North America and development of a multiplex PCR assay to identify key parasitoids of Drosophila suzukii (Diptera, Drosophilidae) Open
In recent years, there has been an increase in the adventive establishment and spread of parasitoid wasps outside of their native range. However, lack of taxonomic tools can hinder the efficient screening of field-collected samples to docu…
View article: First records of adventive populations of the parasitoids Ganaspis brasiliensis and Leptopilina japonica in the United States
First records of adventive populations of the parasitoids Ganaspis brasiliensis and Leptopilina japonica in the United States Open
We report the first known incidence of two parasitoid species of the invasive pest, Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), in the United States (US). The discovery of Ganaspis brasiliensis (Ihering) (Hymenoptera: Figitida…
View article: Plant defense against a pathogen drives nonlinear transmission dynamics through both vector preference and acquisition
Plant defense against a pathogen drives nonlinear transmission dynamics through both vector preference and acquisition Open
Host defense against vector‐borne plant pathogens is a critical component of integrated disease management. However, theory predicts that traits that confer tolerance or partial resistance can, under certain ecological conditions, enhance …
View article: Assessing Vectors of Xylella fastidiosa in California: From Ecology to Transmission Dynamics
Assessing Vectors of Xylella fastidiosa in California: From Ecology to Transmission Dynamics Open
Although spittlebugs were first confirmed as vectors of Xylella fastidiosa in the 1950s, their role in epidemics of Pierce’s disease of grapevine in the California North Coast remains unknown. The goal of this dissertation was to assess th…
View article: Seasonal Abundance and Infectivity of<i>Philaenus spumarius</i>(Hemiptera: Aphrophoridae), a Vector of<i>Xylella fastidiosa</i>in California Vineyards
Seasonal Abundance and Infectivity of<i>Philaenus spumarius</i>(Hemiptera: Aphrophoridae), a Vector of<i>Xylella fastidiosa</i>in California Vineyards Open
The meadow spittlebug, Philaenus spumarius (Linnaeus) (Hemiptera: Aphrophoridae), is a vector of the plant pathogen Xylella fastidiosa; however, its role in recent outbreaks of Pierce’s disease of grapevine (PD) in California is unclear. W…
View article: Impact of phenolic compounds on progression of Xylella fastidiosa infections in susceptible and PdR1-locus containing resistant grapevines
Impact of phenolic compounds on progression of Xylella fastidiosa infections in susceptible and PdR1-locus containing resistant grapevines Open
Pierce's disease is of major concern for grapevine (Vitis vinifera) production wherever the bacterial pathogen Xylella fastidiosa and its vectors are present. Long-term management includes the deployment of resistant grapevines such as tho…
View article: Prevalence of Flavescence Dorée Phytoplasma-Infected Scaphoideus titanus in Different Vineyard Agroecosystems of Northwestern Italy
Prevalence of Flavescence Dorée Phytoplasma-Infected Scaphoideus titanus in Different Vineyard Agroecosystems of Northwestern Italy Open
Quantitative estimates of vector populations and their infectivity in the wild and in cultivated compartments of agroecosystems have been carried out to elucidate the role of the wild compartment in the epidemiology of Flavescence dorée (F…
View article: Genetic Diversity of Flavescence Dorée Phytoplasmas at the Vineyard Scale
Genetic Diversity of Flavescence Dorée Phytoplasmas at the Vineyard Scale Open
Flavescence dorée, a threatening disease of grapevine caused by FD phytoplasma (FDp), is distributed within the most important wine-producing areas of Europe and has severe effects on both vineyard productivity and landscape management. FD…
View article: <i>Xylella fastidiosa</i>: Insights into an Emerging Plant Pathogen
<i>Xylella fastidiosa</i>: Insights into an Emerging Plant Pathogen Open
The bacterium Xylella fastidiosa re-emerged as a plant pathogen of global importance in 2013 when it was first associated with an olive tree disease epidemic in Italy. The current threat to Europe and the Mediterranean basin, as well as ot…