The mitochondrial genome of an Endangered freshwater snail Koreoleptoxis nodifila (Caenogastropoda: Semisulcospiridae) from South Korea

Abstract

The mitochondrial genome of the Endangered freshwater snail Koreoleptoxis nodifila (Caenogastropoda: Semisulcospiridae) from South Korea is determined and characterized in detail. It is 15,737 bp in length being composed of 13 protein-coding genes (PCGs), 22 transfer RNA genes (tRNAs), two ribosomal RNA genes (rRNAs), and one control region. It has a base composition of 31.23% for A, 16.29% for G, 17.84% for C, and 34.64% for T. The phylogenetic trees reconstructed based on the maximum-likelihood (ML) method and Bayesian inference (BI) confirmed that K. nodifila belongs to the Semisulcospiridae clade in the monophyletic caeonogastropod superfamily Cerithioidea.

Neogastropod (Mollusca, Gastropoda) phylogeny: A step forward with mitogenomes

“…At the superfamily level, some superfamilies are recovered monophyletic and supported, often confirming previously published phylogenies, although based on a much more reduced sampling (Choi et al, 2021;Osca et al, 2015;Uribe et al, 2021;Wang et al, 2021). For example, the Conoidea, represented by many mitogenomes covering almost all the family-level diversity of the group, is found monophyletic.…”

“…And even in an era when datasets based on transcriptomes or reduced genomes are becoming more and more common, new mitogenomes are being produced regularly. Furthermore, in gastropods, the publication of a new mitogenome(s) provides often the opportunity to produce a new phylogeny by combining the newly produced mitogenome(s) with previously published ones (Barghi et al, 2016; Choi et al, 2021; Harasewych et al, 2019; Huang et al, 2021; Wang et al, 2021).…”

“…And even in an era when datasets based on transcriptomes or reduced genomes are becoming more and more common, new mitogenomes are being produced regularly. Furthermore, in gastropods, the publication of a new mitogenome(s) provides often the opportunity to produce a new phylogeny by combining the newly produced mitogenome(s) with previously published ones (Barghi et al, 2016;Choi et al, 2021;Harasewych et al, 2019;Huang et al, 2021;Wang et al, 2021). However, such publications generally limit the scope of the phylogeny to a few mitogenomes among those available in public databases, and the phylogenetic analyses conducted are often limited to one method, and do not test for various methods and/or models in order to more thoroughly reconstruct phylogenetic relationships.…”

“…All the previously published phylogenetic studies that, at least partly, dealt with the neogastropod superfamily relationships failed to resolve most of these deep relationships. Two notable exceptions are (a) the recovery of the sister-taxa Tonnoidea (also revised at the family level- Strong et al, 2019) and Ficoidea, two superfamilies currently not recognized as a Neogastropoda, within the neogastropod clade (as sister to all the other neogastropods but the Cancellariidae; Colgan et al, 2007;Fourdrilis et al, 2018;Harasewych et al, 2019;Machkour-M'Rabet et al, 2021;Osca et al, 2015;Wang et al, 2017Wang et al, , 2021; (b) the monophyly of a group that includes all the neogastropods except the Volutoidea (Cancellariidae, marginellids, Volutidae), the Tonnoidea and the Ficoidea (Abdelkrim et al, 2018;Choi et al, 2021;Cunha et al, 2009;Fourdrilis et al, 2018;Harasewych et al, 2019;Machkour-M'Rabet et al, 2021;Osca et al, 2015;Uribe et al, 2021;Wang et al, 2017Wang et al, , 2021.…”

The mitochondrial genome of the threatened tideland snail Pirenella pupiformis (Mollusca: Caenogastropoda: Potamididae) determined by shotgun sequencing

“… 2019 ; Choi et al. 2021 ), the ML tree in this study showed that the superfamily Cerithioidea was recovered as a monophyletic group (bootstrap probability = 100%). The family Potamididae ( Cerithidea species+ Pirenella pupiformis ) was monophyletic with robust support (100%).…”