Effects of extreme temperatures on the survival of the quarantine stored-product pest, Trogoderma granarium (khapra beetle) and on its associated bacteria

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dc.contributor.authorWilches Correal, Diana Maria
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorFloate, Kevin D.
dc.contributor.supervisorLaird, Robert A.
dc.date.accessioned2017-01-03T21:00:33Z
dc.date.available2017-01-03T21:00:33Z
dc.date.issued2016
dc.degree.levelMastersen_US
dc.description.abstractTrogoderma granarium is a pest of stored-grain products in Asia and Africa, and a quarantine pest for much of the rest of the world. To evaluate extreme temperatures as a control strategy for this pest, I investigated the effect of high and low temperatures on the survival (Chapters 2 and 3) and on the microbiome (Chapter 4) of T. granarium. The most cold- and heat-tolerant life stages were diapausing-acclimated larvae and diapausing larvae, respectively. Trogoderma granarium can be controlled (Probit 9) with an exposure of 70 d to −15°C or 1.2 h to 60°C. High temperatures affected the microbiome; an effect of low temperatures was not detected. While the microbiome changed with life stage, it was dominated by Spiroplasma bacteria. Further research is necessary to understand the Spiroplasma-T. granarium relationship. Future research should also investigate combinations of extreme temperatures with other techniques to shorten the time required for mortality.en_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/4754
dc.language.isoen_USen_US
dc.proquest.subject0353en_US
dc.proquest.subject0410en_US
dc.proquest.subject0307en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta : University of Lethbridge, Dept. of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectextreme temperature testingen_US
dc.subjectinsect microbiomesen_US
dc.subjectinsect pestsen_US
dc.subjectpest control methodsen_US
dc.subjectstored grainen_US
dc.subjectstored-product pestsen_US
dc.titleEffects of extreme temperatures on the survival of the quarantine stored-product pest, Trogoderma granarium (khapra beetle) and on its associated bacteriaen_US
dc.typeThesisen_US
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