Surveillance of Permethrin Resistance in Valdosta Populations of Aedes albopictus via the CDC Bottle Bioassay

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dc.contributor.author Evans, Emily Erin
dc.coverage.spatial Valdosta (Ga.) en_US
dc.coverage.temporal 2019 en_US
dc.date.accessioned 2021-09-27T17:50:42Z
dc.date.available 2021-09-27T17:50:42Z
dc.date.issued 2021-07
dc.identifier.other 6EAE6CEB-2833-C7A8-4D16-D3EE869B731A en_US
dc.identifier.uri https://hdl.handle.net/10428/5014
dc.description.abstract Mosquito populations are likely to develop genetic resistance to insecticides with prolonged and/or improper application. Regular assessments of insecticide resistance should be performed on exposed populations to optimize local integrated mosquito management strategies. Current strategies within Valdosta, Georgia, especially chemical insecticide application, may prove to be outdated and inefficient due to the absence of a designated resistance testing center. The current study aims to provide a baseline resistance report for the nuisance biter and potential disease vector, Aedes albopictus (Skuse) to the type I pyrethroid, permethrin. Although Ae. albopictus is primarily a nuisance biter in southern Georgia, this species has the physiological potential to be a vector of numerous arboviruses and other pathogens. Ae. albopictus colonies were established from eggs collected at 15 independent sites within and near Valdosta, GA between July and November of 2019. The majority of the sites were located in residential neighborhoods. Post-rearing, survivability upon permethrin exposure was tested using the Centers for Disease Control and Prevention (CDC) Bottle Bioassay Kit. This bioassay accounts for resistance by comparing a ‘diagnostic time’ (the maximum time required to kill 100% of susceptible mosquitoes of a particular species and insecticide dosage) to the actual time taken for experimental mosquitoes to die. The occurrence of permethrin resistance in Valdosta populations of Ae. albopictus was observed in this study. According to World Health Organization (WHO) standards, <90% mortality at the diagnostic time indicates resistance, and mosquitoes from all 15 collection sites exhibited mortality <82%. This level of resistance suggests that mosquito abatement methods currently used in Valdosta, Georgia should be modified to mitigate insecticide resistance. Population reduction of this potential vector species should then reduce the risk of rapid disease transmission should the respective pathogens be introduced into the area. Keywords: Permethrin, Pyrethroid, Insecticide Resistance, Asian Tiger Mosquito, Aedes albopictus, CDC Bottle Bioassay en_US
dc.description.tableofcontents ABSTRACT i -- DEDICATION ii -- CHAPTER I: INTRODUCTION 1 -- CHAPTER II: MATERIALS AND METHODS 9 -- Collection Sites 9 -- Oviposition Cups 10 -- Specimen Storage and Rearing 10 -- CDC Bottle Bioassay Resistance Testing 11 -- Statistical Analysis 13 -- CHAPTER III: RESULTS 14 -- CHAPTER IV: DISCUSSION 16 -- REFERENCES 22 -- APPENDIX A: TABLES 28 -- APPENDIX B: FIGURES 36 en_US
dc.format.extent 1 electronic document, 54 pages. 2416379 bytes. en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.rights This dissertation is protected by the Copyright Laws of the United States (Public Law 94-553, revised in 1976). Consistent with fair use as defined in the Copyright Laws, brief quotations from this material are allowed with proper acknowledgement. Use of the materials for financial gain with the author's expressed written permissions is not allowed. en_US
dc.subject Aedes albopictus en_US
dc.subject Biological assay en_US
dc.subject Dissertations, Academic--United States en_US
dc.subject Insecticide resistance en_US
dc.subject Mosquitoes en_US
dc.subject Pyrethroids en_US
dc.title Surveillance of Permethrin Resistance in Valdosta Populations of Aedes albopictus via the CDC Bottle Bioassay en_US
dc.type Thesis en_US
dc.contributor.department Department of Biology of the College of Science and Mathematics en_US
dc.description.advisor Blackmore, Mark S.
dc.description.committee Chambers, Eric W.
dc.description.committee Lockhart, J. Mitchell
dc.description.degree M.S. en_US
dc.description.major Biology en_US


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