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Identification and Genetic Characterisation of Populations of Tuta absoluta (Meyrick, 1917; Lepidoptera: Gelechidae) Destroyer of Tomato Farming in Senegal

In Senegal tomato jeopardiser Tuta absoluta (Meyrick 1917; Lepidoptera: Gelechiidae) causes serious losses in tomato production. This species can feed on all the green parts of the tomato and can cause up to 100% damage if not controlled. Currently, the most effective method of pest management is the use of chemicals. However, as it is generally noticed, excessive and unconscious use of chemicals leads to very harmful environmental pollution. The objective of this study is to identify the haplotypes of Tuta absoluta but also to see if agro-ecological zones and localities have contributed to genetically structure its populations. To achieve this goal, we adopted the PCR-Sequencing technique of the mitochondrial gene Cytochrome B of three populations of T. absoluta from three different localities in Senegal. The study has revealed the presence of 8 haplotypes and a population of Tuta absoluta in demographic balance. No significant genetic structuring has been noted between agro-ecological zones or localities. Moreover, phylogenetic reconstructions show no clustering either according to agro-ecological zones (Niayes and the Senegal River Valley), or according to localities. Nevertheless two clades were revealed by the latter, suggesting a multiple introduction of T. absoluta followed by an expansion to different geographical regions of the country by diffusion after its introduction.

Agro Ecological Zones, Genetic Structuring, Localities, Haplotype, Jeopardiser

Mamecor Faye, Toffène Diome, Adja Rokhaya Diallo, Mbacké Sembène. (2023). Identification and Genetic Characterisation of Populations of Tuta absoluta (Meyrick, 1917; Lepidoptera: Gelechidae) Destroyer of Tomato Farming in Senegal. International Journal of Genetics and Genomics, 11(3), 104-111.

Copyright © 2023 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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