[-] Show simple item record

dc.contributor.advisorBarrett, Bruce A.en
dc.contributor.authorKeesey, Ian W.en_US
dc.date.issued2007eng
dc.date.submitted2007 Fallen
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.en_US
dc.descriptionTitle from title screen of research.pdf file (viewed on November 11, 2008)en_US
dc.descriptionIncludes bibliographical references.en_US
dc.descriptionThesis (M.S.) University of Missouri-Columbia 2007.en_US
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Entomology.en_US
dc.description.abstractChestnut trees were once a dominant sight across the deciduous forest of the eastern and central United States, but following a devastating blight in the early 1900's much of the native range for this tree species has been lost. As interest in the restoration of the American chestnut tree increases, and as commercial production of chestnut fruit is being developed using blight resistant cultivars from Asia, a large quantity of both native and hybridized trees are coming into maturity and nut production across the United States. The two weevil species in the United States, the greater chestnut weevil (Curculio caryatrypes, Boheman) and the lesser chestnut weevil (Curculio sayi, Gyllenhal) attack ripening chestnut fruit, and they can devastate a chestnut operation. Of these two species, the lesser chestnut weevil (C. sayi) has long been reported as the most common and most damaging chestnut pest insect species. Our study shows a bimodal emergence pattern for C. sayi, a finding not previously documented for this species of chestnut weevil. Emergence patterns were consistent over the three years of this study, with the largest numbers of adults appearing in May and September each year. Underground study results indicate a minimum of 15 months in larval diapause prior to adult development for C. sayi. Most of the larvae emerged as adults in the second year, though some may hold over to emerge the third year. The flight ability of C. sayi allows them to travel up to 3 kilometers in a single flight, though average distances per flight were closer to 500 meters. There were no major differences in flight ability between the genders. This study lays the basic biological and ecological ground work required for continued research into C. sayi, and for the establishment of educated pest management.en_US
dc.identifier.merlin.b65265038en_US
dc.identifier.oclc271017113en_US
dc.identifier.otherKeeseyI-120707-T8417en_US
dc.identifier.urihttp://hdl.handle.net/10355/5028
dc.publisherUniversity of Missouri--Columbiaen_US
dc.relation.ispartofcollection2007 Freely available theses (MU)
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2007 Theses
dc.subject.lcshAmerican chestnuten_US
dc.subject.lcshAmerican chestnut -- Diseases and pestsen_US
dc.subject.lcshChestnut weevils -- Managementen_US
dc.titleThe seasonal occurrence, soil distribution and flight characteristics of Curculio sayi (Coleoptera: Curculionidae) in mid-Missourien_US
dc.typeThesisen_US
thesis.degree.disciplineEntomologyen_US
thesis.degree.disciplineEntomologyeng
thesis.degree.grantorUniversity of Missouri--Columbiaen_US
thesis.degree.levelMastersen_US
thesis.degree.nameM.S.en_US


Files in this item

[PDF]
[PDF]
[PDF]

This item appears in the following Collection(s)

[-] Show simple item record