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Cryptic Diversity in Sympatric Migonemyia migonei (Diptera: Psychodidae), Eventual Meaning for Leishmaniasis Transmission

  • Insect Taxonomy and Biodiversity
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Abstract

Migonemyia migonei (Franҫa, 1920) (Diptera: Psychodidae) belongs to the subfamily Phlebotominae, of epidemiological importance due to its role as a vector in leishmaniasis transmission cycles and its broad geographic distribution in South America. Few morphometric and genetic studies have demonstrated the existence of variability among geographically distant populations in Brazil. The aim of the study was to estimate the genetic distance within the morphospecies Mg. migonei through the analysis of cytochrome C oxidase subunit I (COI) sequences of specimens captured in Argentina and those available in online databases. The COI sequences from specimens collected in different localities of Argentina and sequences available in online databases were utilized. Genetic distances were analyzed and a median-joining haplotype network was constructed. Finally, phylogenetic reconstruction was performed according to Bayesian inference. The analyses led to the identification of at least two haplogroups: haplogroup I with sequences of specimens from Colombia, Brazil and Argentina, and haplogroup II with sequences of specimens from Argentina. Interestingly, specimens from Argentina whose haplotypes corresponded to both haplogroups, were collected in sympatry. The results suggest that Mg. migonei could be a species complex with at least two distinct members. This hypothesis could explain the known characteristics of adaptability and vector permissiveness of the species, as the putative cryptic species of the complex could differ in traits of epidemiological importance.

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Acknowledgements

SLM thanks Daniela Lamattina, Nilso Molina and Milena Casafus from INMeT-ANLIS Malbrán for their collaboration in the field work. Also to Elizabet Vilacoba and Dario Lijtmaer of the Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" for their contributions in the sequencing stage.

Funding

This research was partially supported by Consejo Nacional de Investigacioes Científicas y Técnicas, Argentina, and resources from Instituto Nacional de Medicina Tropical ANLIS “Carlos G. Malbrán”, Ministerio de Salud, Argentina.

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Conceptualization: SLM; methodology: SLM and APM; funding acquisition: SLM and ODS; resources: SLM, MGQ and ODS; supervision: MGQ and ODS; writing original draft: SLM, writing—review & editing: ODS, MGQ, APM and SLM.

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Correspondence to Sofía Lorián Moya.

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Moya, S.L., Pech-May, A., Quintana, M.G. et al. Cryptic Diversity in Sympatric Migonemyia migonei (Diptera: Psychodidae), Eventual Meaning for Leishmaniasis Transmission. Neotrop Entomol 53, 47–55 (2024). https://doi.org/10.1007/s13744-023-01095-5

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  • DOI: https://doi.org/10.1007/s13744-023-01095-5

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