THE INFLUENCE OF THERMAL ENVIRONMENT ON DEVELOPMENT AND VULNERABILITY TO PREDATION OF THE AZALEA LACE BUG, STEPHANITIS PYRIOIDES (HETEROPTERA: TINGIDAE)

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dc.contributor.advisorShrewsbury, Paula Men_US
dc.contributor.advisorRaupp, Mike Jen_US
dc.contributor.advisorDenno, Robert Fen_US
dc.contributor.authorLepping, Milesen_US
dc.contributor.departmentEntomologyen_US
dc.date.accessioned2004-05-31T19:58:21Z
dc.date.available2004-05-31T19:58:21Z
dc.date.issued2004-01-09en_US
dc.description.abstractDifferential thermal environments were examined for their influence on performance traits of a key ornamental pest, the azalea lace bug, Stephanitis pyrioides, in the presence and absence of a generalist predator, the green lacewing, Chrysoperla carnea. In laboratory studies, duration of development increased for nymphal instars of S. pyrioides as temperature decreased, producing significant developmental lags in cooler environments. Predation trials identified early nymphal stages as more susceptible to predation than older, dispersal-capable stages, specifically in warmer environments. Additionally, morphological characteristics attained at adulthood combined with behavioral defenses may mediate the reduction in consumption of later S. pyrioides stages by piercing-sucking arthropods such as C. carnea. Field studies confirmed development and life-stage vulnerability findings from the laboratory, however, differential thermal environments created by shading did not generally influence predation. In urban landscapes, S. pyrioides may attain a degree of enemy-free space by occupying a thermal refuge in sunny, exposed habitats.en_US
dc.format.extent935123 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/1903/151
dc.language.isoen_US
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.subject.pqcontrolledBiology, Entomologyen_US
dc.subject.pqcontrolledBiology, Animal Physiologyen_US
dc.subject.pqcontrolledBiology, Ecologyen_US
dc.titleTHE INFLUENCE OF THERMAL ENVIRONMENT ON DEVELOPMENT AND VULNERABILITY TO PREDATION OF THE AZALEA LACE BUG, STEPHANITIS PYRIOIDES (HETEROPTERA: TINGIDAE)en_US
dc.typeThesisen_US

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