Working Paper Article Version 1 This version is not peer-reviewed

Mitochondrial Genomes, Phylogenetic Associations, and SNP Recovery for the Key Invasive Ponto-Caspian Amphipods in Europe

Version 1 : Received: 4 September 2021 / Approved: 7 September 2021 / Online: 7 September 2021 (10:56:34 CEST)

How to cite: Mamos, T.; Grabowski, M.; Rewicz, T.; Bojko, J.; Strapagiel, D.; Burzyński, A. Mitochondrial Genomes, Phylogenetic Associations, and SNP Recovery for the Key Invasive Ponto-Caspian Amphipods in Europe. Preprints 2021, 2021090120 Mamos, T.; Grabowski, M.; Rewicz, T.; Bojko, J.; Strapagiel, D.; Burzyński, A. Mitochondrial Genomes, Phylogenetic Associations, and SNP Recovery for the Key Invasive Ponto-Caspian Amphipods in Europe. Preprints 2021, 2021090120

Abstract

The Ponto-Caspian region is the main donor of invasive amphipods to freshwater ecosystems, with at least 13 species successfully established in European inland waters. Dikerogammarus spp. and Pontogammarus robustoides are among the most successful, due to their strong invasive impact on local biota. However, genomic knowledge on these invaders is scarce, while phylogeography and population genetics have been based on short fragments of mitochondrial markers or nuclear mi-crosatellites. In this study, we provide: (i) reconstruction of four mitogenomes for four invasive gammarids; (ii) comparison between the structure of the newly obtained mitogenomes and to those from literature; (iii) SNP calling rates for individual D. villosus and D. haemobaphes from different invasion sites across Europe; and (iv) the first time-calibrated full mitogenome reconstruction of several Ponto-Caspian taxa. We have sequenced, assembled and annotated four mitogenomes, each from D. villosus, D. hae-mobaphes, D. bispinosus and Pontogammarus robustoides. We found that, in comparison to other gammarids, the mitogenomes of Ponto-Caspian species show a translocation between the tRNA-E and tRNA-R positions. Phylogenetic reconstruction using the mitogenomes identified that Ponto-Caspian gammarids form a well-supported group that originated in the Miocene. Our study supports paraphyly in the family Gammaridae. These mitogenomes serve as vital genetic resources for the development of new markers for PCR-based identification methods and demographic studies.

Keywords

Amphipoda; invasive species; population genetics; miogenome; Ponto-Caspian; SNP

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.