Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Egg Parasitoids"”.
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Trophic and Competitive Interactions among Egg Parasitoids of Stink Bugs
… trap’. A possibility of such a trap for native egg parasitoids (Hymenoptera: Scelionidae) exists with the introduction of the exotic brown marmorated stink bug, Halyomorpha halys (Hemiptera: Pentatomidae). The objective of this thesis is to enhance the understanding of Pentatomidae-Scelionidae …
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The Effects of Insecticides on Squash Bug, its Egg Parasitoids and Pollinators in Virginia Cucurbit Production
… the effects of insecticides on squash bugs, its egg parasitoid, and pollinators in the production of cucurbits in Virginia. Plants in the cucumber family are dependent on insect pollination for successful fruit set, and are also susceptible to plant eating insects. Squash bugs are capable of …
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Compatible components of the integrated pest management of Bathycoelia distincta (Hemiptera: Pentatomidae
… focusing on entomopathogenic fungi and egg parasitoids Trissolcus basalis (Wollaston, 1858) (Hymenoptera: Platygastridae). Landscape context and elevation were the principal factors that explained species richness and arthropod size. Species richness and insect size decreased with …
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Role of trap crops on harlequin bug, Murgantia histrionica (Hahn), population dynamics and parasitism in broccoli plots
… Ooencyrtus johnsoni Howard, were identified as egg parasitoids. Their combined parasitization levels for the two years were 8% and 37%. T. murgantiae accounted for 87% and 96% of the parasitization, respectively.. When 19.6 cm and 11.9 cm broccoli plants were exposed to five densities of …
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Integrated Multiple-tactic Management of the Redbanded Stink Bug on Soybeans in Louisiana
… the studies conducted was the current status of egg parasitoids of stink bugs in Louisiana. Telenomus podisi Ashmead (Hymenoptera: Platygastridae) was the predominant egg parasitoid of stink bugs. Field studies were also conducted to determine the combined effects of host plant resistance and …
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Stink bug egg studies in southeastern Virginia: parasitoid survey, and susceptibility and chorion permeability to insecticides
… known about stink bug (Hemiptera: Pentatomidae) eggs, their natural enemies, and their susceptibility to insecticides. A survey of stink bug egg parasitoids was conducted in row crops and vegetables in eastern Virginia. Parasitization was highest in Euschistus servus (Say) with 89.7% and 49.2% of …
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Foraging ecology and sampling of Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae) and its host Halyomorpha halys (Stal) (Hemiptera: Pentatomidae) in wild host trees
… Scelionidae), one of the most effective egg parasitoids of H. halys in their shared native range in Asia, was discovered in the Maryland in 2014 and in Frederick County, VA in 2015. Adventive populations of T. japonicus have also been detected recently in several other states and show …
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OPTIMIZING THE BIOLOGICAL CONTROL OF INVASIVE INSECTS: EVALUATING NATURAL ENEMY HOST SPECIFICITY, PREY BEHAVIOR, AND VIBRATIONAL COMMUNICATION
… we investigated and compared the ability of two egg parasitoids, Trissolcus japonicus and Trissolcus mitsukurii, associated with the phytophagous invasive species Halyomorpha halys. In order to evaluate their potential impact on non-target species, the behaviors of these exotic parasitoids were …