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Mitochondrial genetic diversity of the invasive drosophilid Zaprionus indianus (Diptera: Drosophilidae) in South America

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Abstract

Zaprionus indianus was first reported in South America in 1999 and has rapidly colonised most of the continent since. Previous studies established Brazil as the sole entry point into the continent and the source of its expansion northward, but dispersal to the southern limit of its distribution in South America has not been studied so far. In the present work we extracted DNA of 127 individuals collected in north-eastern Argentina (South America) and amplified the COII mitochondrial gene in order to describe the mitochondrial genetic diversity and shed light about the invasion history of this species into this area. Our results suggest a single Z. indianus introduction wave from Brazil has recently occurred in north-eastern Argentina. In addition, by comparison with available sequences from other locations we can state that the invasive haplotypes present in Argentina are shared with those found in Brazilian populations and are phylogenetically closer to haplotypes from Africa than those found in India. This places Brazil as the sole recipient of the invasion to the American continent and its subsequent dispersion southwards.

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Acknowledgements

We would like to thank the comments and suggestions of an anonymous reviewer. We would also like to thank Silvia Pietrokovsky for assistance with English language in earlier drafts. This work was supported by the Agencia Nacional de Promoción Científica y Tecnológica (Argentina, grant number PICT 2016-2256) and by the Universidad de Buenos Aires (Argentina, grant numbers UBACyT 20020100100482 and UBACyT 20020170200061BA). NJL, JJF and MSR are members of Carrera del Investigador Científico of CONICET (Argentina), MI and GR are recipients of a scholarship from CONICET (Argentina) and LFG is recipient of a scholarship from the Universidad de Buenos Aires.

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Correspondence to N. J. Lavagnino.

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Fernandez Goya, L., Imberti, M., Rodriguero, M.S. et al. Mitochondrial genetic diversity of the invasive drosophilid Zaprionus indianus (Diptera: Drosophilidae) in South America. Biol Invasions 22, 3481–3486 (2020). https://doi.org/10.1007/s10530-020-02342-1

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  • DOI: https://doi.org/10.1007/s10530-020-02342-1

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