2026-09-19T04:09:48.042277600Zhttps://opus.uleth.ca/server/oai/requestoai:opus.uleth.ca:10133/47542017-01-05T18:00:41Zcom_10133_3346com_10133_1com_10133_296col_10133_3347col_10133_298
ULethbridge OPUS Repository
supervisor
Floate, Kevin D.
supervisor
Laird, Robert A.
author
Wilches Correal, Diana Maria
author
University of Lethbridge. Faculty of Arts and Science
2017-01-03T21:00:33Z
2017-01-03T21:00:33Z
2016
https://hdl.handle.net/10133/4754
Trogoderma 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
extreme temperature testing
insect microbiomes
insect pests
pest control methods
stored grain
stored-product pests
Effects of extreme temperatures on the survival of the quarantine stored-product pest, Trogoderma granarium (khapra beetle) and on its associated bacteria
Thesis
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URL
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WILCHES CORREAL_DIANA MARIA_MSC_2016.pdf
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WILCHES CORREAL_DIANA MARIA_MSC_2016.pdf.txt