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 “"Mealybugs"”.
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Revision of the tribe Serrolecaniini Shinji (Pseudococcidae) with discussion on other "legless" mealybugs
Of the estimated 1100 species of mealybugs, approximately 6% are described as possessing degenerative legs and antennae in the adult female developmental stage or having lost these structures altogether. Fifteen genera composing 63 species are often separated into their own taxonomic group based on …
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Experiments on a mealybug infesting apple and a mealybug infesting catalpa
… parasites, Clausenua purpurea Ishii, from the mealybugs from catalpa parasitized the mealybugs from apply failed to parasitize mealybugs from catalpa. 5. Some female mealybugs may overwinter in the adult form if fully protected from the weather and if the temperature does not drop below 45 °F. …
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Survey of different mealybug species and attending ants and their management in Virginia vineyards
Mealybugs (Order Hemiptera: Superfamily Coccoidea) represent a persistent problem in grape-growing regions globally, with a notable increase in infestations in recent times. The current study investigates the species composition and seasonal dynamics of mealybugs in vineyards. Pseudococcus …
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Epidemiology of Banana streak virus (BSV) in East African highland bananas (AAA-EA)
… the spread of BSV. An identification key for the mealybugs on Musa in Africa was constructed. Screenhouse transmission experiments identified Dysmicoccus brevipes, Planococcus citri and a Pseudococcus sp. from bananas as mealybugs able to transmit the virus. Field observations also demonstrated …
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Characterization of grapevine vein clearing virus expression strategy and development of caulimovirus infectious clones
… flexuous rods in these plants. Two species of mealybugs were tested for their ability to acquire and transmit Grapevine vein clearing virus in chapter 5. The longtailed mealybugs were collected from a cycad plant in Tucker greenhouse (University of Missouri), whereas a mixed population of …
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Documentation of grapevine leafroll-associated viruses in wine grape varieties and native grape species in Virginia, and examination of the movement of grapevine leafroll disease to develop management strategies
… sugar accumulation and compromising skin color. Mealybugs are vectors of grapevine leafroll-associated viruses (GLRaVs). A statewide survey of commercial and wild grapevines in Virginia was conducted during 2009 through 2011. Also, vector management options were tested in two field studies. …
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Grapevine Viruses and Associated Vectors in Virginia: Survey, Vector Management, and Development of Efficient Grapevine Virus Testing Methods
… of insecticide effectiveness on GLRaV-3 vectors (mealybugs) and the spread of GLRaV-3 were examined: Four trials conducted from 2012 to 2014 revealed that despite successful control of mealybugs, GLRaV-3 is spread at a very rapid rate. A new sampling technique for efficient nucleic acid storage …
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Ecological and behavioral factors associated with monitoring and managing pink hibiscus mealybug (Hemiptera: Pseudococcidae) in the southern US
… field cages were evaluated. The total number of mealybugs captured in sticky band and pheromone traps during the study was reduced by dinotefuran and the predator. At the end of the study, the number of nymphs recovered from hibiscus terminals was reduced by the dinotefuran, predator and …