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 “"Leptopilina"”.
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"Molecular Analysis of Virulence Factors Unique to Leptopilina heterotoma-a Parasitic Wasp of Drosophila spp."
… immune defense mechanisms of their fly hosts. Leptopilina heterotoma (Lh) is a generalist wasp species, successful on many Drosophila spp. world-wide. During oviposition, the female wasp introduces venom proteins and virus-like particles (VLPs) into developing fly larvae. VLPs are endocytosed …
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Evidence for Organelle-Like Extracellular Vesicles from a Parasite of Drosophila and Their Function in Suppressing Host Immunity
… wasps of the closely-related species <em>Leptopilina heterotoma</em> (<em>Lh</em>), a generalist of many <em>Drosophilia</em> flies, and <em>Leptopilina boulardi</em> (<em>Lb</em>), a specialist on flies of the melanogaster subgroup, produce venom and virus-like particles (VLPs) in their …
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Molecular and genetic studies on a SipD/IpaD-related virulence spike protein from immune-suppressive particles of a Drosophila parasitoid
… the wasp egg. In the <em>Drosophila</em>/<em>Leptopilina</em> host-parasitoid system, extracellular vesicles (EVs) are oviposited along with the wasp egg. The EVs possess spikes and contain hundreds of proteins, some of which enable wasp eggs to escape encapsulation by changing the morphology …
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Host-Parasitoid Interactions of Two Invasive Drosophilids in Virginia Fruit Crops
… Two parasitoids of frugivorous drosophilids, Leptopilina boulardi (Barbotin, Carton, and Kelner-Pillault) (Hymenoptera: Figitidae) and Pachycrepoideus vindemiae (Rondani) (Hymenoptera: Pteromalidae), were reared, but only one P. vindemiae was reared from D. suzukii, and no parasitoids were …
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Understanding Virulence Mechanisms of Parasitoid Wasps of Drosophila: A Comparative Approach Across Clades
… development. Parasitoid wasps of the genus <em>Leptopilina</em> are known to produce extracellular vesicle (EV)-like secretions in their venom. Well-characterized in <em>L. heterotoma</em>, these vesicles kill host hemocytes, respectively, such that the encapsulation response in <em>D. …
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Toxin-like proteins in the venom of Drosophila parasitoids
… a solo cysteine-rich knottin micropeptide of Leptopilina heterotoma venom. Structural analyses show that LhKNOT and its 41 of the 46 homologs contain a Cation-Polar-Cation Clip, that in heparin-binding proteins, is capable of binding to heparin and other glycosaminoglycans. These results …
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Genetics and Evolution of Drosophila Humoral Immunity against Parasitoid Infections
The parasitoid wasp Leptopilina boulardi is a major natural parasite of Drosophila melanogaster. However, the regulation of Drosophila humoral immunity against parasitoids is not clearly illustrated. In this thesis, I investigated the humoral immune mechanisms underlying Drosophila resistance to …
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Ganaspis kimorum as a classical biological control agent for Drosophila suzukii: from laboratory studies to field assessments
… presence of the adventive larval parasitoid, Leptopilina japonica. Exposure in the field of G. kimorum-parasitized hosts showed that the BCA experiences significant competitive pressure, leading to an average 62% reduction in emergence, likely due to secondary infestation by Drosophila spp. …