Population Dynamics and Insecticide Resistance in Tuta Absoluta (Lepidoptera: Gelechiidae), an Invasive Pest on Tomato in Kenya

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dc.contributor.authorOng’onge, Maureen Adhiambo
dc.contributor.authorAjene, Inusa Jacob
dc.contributor.authorRuno, Steven
dc.contributor.authorSokame, Bonoukpo´e Mawuko
dc.contributor.authorKhamis, Fathiya Mbarak
dc.date.accessioned2023-11-17T08:58:17Z
dc.date.available2023-11-17T08:58:17Z
dc.date.issued2023
dc.descriptionArticleen_US
dc.description.abstractTuta absoluta feeds on solanaceous plants with preference on tomato. Management of the pest is mostly with chemical insecticides. This study identified insecticide resistant populations and predicted resistance to insecticides. Insecticide resistance development was modelled using system thinking, and system dynamics approaches. The model showed the pest resistance development is alarming with an exponential increase of the resistance strength mostly in recent years. Furthermore, we used seven insecticide-resistance gene markers to resolve the population structure and genetic differentiation of insecticide-resistant populations in Kenya. The genes for resistance (knockdown resistance (kdr) mutations, acetylcholinesterase (AChE) and voltage gated sodium channel (para)) were detected in all populations. Population structure analyses separated T. absoluta populations into three genetic clusters with resistant genes that are interconnected. A better insight on the population dynamics and the genetic structure T. absoluta resistant genes in Kenya will help estimate resistance strength and determine the most effective pest control strategies.en_US
dc.description.sponsorshipAfrican Union (AU) (Tuta-IPM Project Swedish International Development Cooperation Agency(Sida) Swiss Agency for Development and Cooperation (SDC) Australian Centre for International Agricultural Research(ACIAR) Norwegian Agency for Development Cooperation (Norad) Federal Democratic Republic of Ethiopia Government of the Republic of Kenyaen_US
dc.identifier.citationOng'onge, M. A., Ajene, I. J., Runo, S., Sokame, B. M., & Khamis, F. M. (2023). Population dynamics and insecticide resistance in Tuta absoluta (Lepidoptera: Gelechiidae), an invasive pest on tomato in Kenya. Heliyon.en_US
dc.identifier.urihttps://doi.org/10.1016/j.heliyon.2023.e21465
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/27146
dc.language.isoenen_US
dc.publisherCellPressen_US
dc.subjectTuta absolutaen_US
dc.subjectKnockdown resistanceen_US
dc.subjectAcetylcholinesteraseen_US
dc.subjectSystem thinkingen_US
dc.subjectSystem dynamicsen_US
dc.titlePopulation Dynamics and Insecticide Resistance in Tuta Absoluta (Lepidoptera: Gelechiidae), an Invasive Pest on Tomato in Kenyaen_US
dc.typeArticleen_US
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